GS108T and GS110TP
Smart Switch Software
Administration Manual
NETGEAR, Inc.
350 E. Plumeria Drive
San Jose CA 95134 USA
202-10603-02
April 2010
© 2007, 2008, 2009, 2010 by NETGEAR, Inc. All rights reserved. FullManual.
Technical Support
Please refer to the support information card that shipped with your product. By registering your product at
http://www.netgear.com/register, we can provide you with faster expert technical support and timely notices of
product and software upgrades.
NETGEAR, INC. Support Information
Phone: 1-888-NETGEAR, for US & Canada only. For other countries, see your Support information card.
E-mail: support@netgear.com
North American NETGEAR Website: http://www.netgear.com
Trademarks
NETGEAR, the NETGEAR logo, and Auto Uplink are trademarks or registered trademarks of NETGEAR, Inc.
Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation.Other brand and product
names are registered trademarks or trademarks of their respective holders.
April 2010
Statement of Conditions
In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to
make changes to the products described in this document without notice.
NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit
layout(s) described herein.
Certificate of the Manufacturer/Importer
It is hereby certified that the GS108T Gigabit Smart Switch and GS110TP Gigabit Smart Switch have been suppressed
in
accordance with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some
equipment (for example, test transmitters) in accordance with the regulations may, however, be subject to certain
restrictions. Please refer to the notes in the operating instructions.
The Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market
and
has been granted the right to test the series for compliance with the regulations.
Bestätigung des Herstellers/Importeurs
Es wird hiermit bestätigt, daß das GS108T Gigabit Smart Switch and GS110TP Gigabit Smart Switch gemäß der im
BMPT-AmtsblVfg 243/1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört sind. Das vorschriftsmäßige
Betreiben einiger Geräte (z.B. Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die
Anmerkungen in der Betriebsanleitung.
Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt
gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.
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Voluntary Control Council for Interference (VCCI) Statement
This equipment is in the Class B category (information equipment to be used in a residential area or an adjacent area
thereto) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing
Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas. When used
near a radio or TV receiver, it may become the cause of radio interference. Read instructions for correct handling.
Product and Publication Details
Model Numbers: GS108T and GS110TP
Publication Date: April 2010
Product Family: Smart Switch
Product Name: GS108T Gigabit Smart Switch and GS110TP Gigabit Smart Switch
Home or Business Product: Business
Language: English
Publication Part Number: 202-10603-02
Publication Version Number: 1.0
v1.0, April 2010
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Contents
GS108T and GS110TP Smart Switch Software Administration Manual
About This Manual
Audience ...........................................................................................................................xi
Organization .....................................................................................................................xi
Conventions, Formats and Scope ................................................................................... xii
How to Print this Manual ................................................................................................. xiv
Revision History .............................................................................................................. xiv
Chapter 1
Getting Started
Switch Management Interface ........................................................................................1-1
Connecting the Switch to the Network ............................................................................1-2
Switch Discovery in a Network with a DHCP Server ......................................................1-3
Switch Discovery in a Network without a DHCP Server .................................................1-5
Configuring the Network Settings on the Administrative System ...................................1-7
Web Access ....................................................................................................................1-8
Smart Control Center Utilities .........................................................................................1-9
Network Utilities .......................................................................................................1-9
Configuration Upload and Download .....................................................................1-10
Firmware Upgrade .................................................................................................1-12
Viewing and Managing Tasks ................................................................................1-14
Understanding the User Interfaces ...............................................................................1-15
Using the Web Interface .........................................................................................1-15
Using SNMP ...........................................................................................................1-20
Interface Naming Convention .......................................................................................1-21
Chapter 2
Configuring System Information
Management ...................................................................................................................2-1
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System Information ..................................................................................................2-1
IP Configuration .......................................................................................................2-3
Time .........................................................................................................................2-5
Denial of Service ....................................................................................................2-12
DNS ........................................................................................................................2-15
Green Ethernet Configuration ................................................................................2-17
PoE (GS110TP Only) ...................................................................................................2-18
PoE Configuration ..................................................................................................2-19
PoE Port Configuration ..........................................................................................2-20
Timer Global Configuration ....................................................................................2-22
Timer Schedule Configuration ................................................................................2-23
SNMP ...........................................................................................................................2-25
SNMPV1/V2 ...........................................................................................................2-25
Trap Flags ..............................................................................................................2-28
SNMP v3 User Configuration .................................................................................2-29
LLDP .............................................................................................................................2-31
LLDP Configuration ................................................................................................2-31
LLDP Port Settings .................................................................................................2-33
LLDP-MED Network Policy ....................................................................................2-34
LLDP-MED Port Settings .......................................................................................2-36
Local Information ....................................................................................................2-37
Neighbors Information ............................................................................................2-40
Services — DHCP Filtering ..........................................................................................2-45
DHCP Filtering Configuration .................................................................................2-45
Interface Configuration ...........................................................................................2-46
Chapter 3
Configuring Switching Information
Ports ...............................................................................................................................3-1
Port Configuration ....................................................................................................3-1
Flow Control .............................................................................................................3-4
Link Aggregation Groups ................................................................................................3-5
LAG Configuration ....................................................................................................3-5
LAG Membership .....................................................................................................3-7
LACP Configuration .................................................................................................3-8
LACP Port Configuration ..........................................................................................3-9
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VLANs ..........................................................................................................................3-10
VLAN Configuration ...............................................................................................3-11
VLAN Membership Configuration ...........................................................................3-12
Port VLAN ID Configuration ...................................................................................3-14
Voice VLAN ..................................................................................................................3-16
Voice VLAN Properties ..........................................................................................3-16
Voice VLAN Port Setting ........................................................................................3-18
Voice VLAN OUI ....................................................................................................3-19
Auto-VoIP .....................................................................................................................3-20
Spanning Tree Protocol ................................................................................................3-22
STP Switch Configuration ......................................................................................3-23
CST Configuration ..................................................................................................3-25
CST Port Configuration ..........................................................................................3-27
CST Port Status .....................................................................................................3-29
Rapid STP ..............................................................................................................3-31
MST Configuration .................................................................................................3-32
MST Port Configuration ..........................................................................................3-34
STP Statistics .........................................................................................................3-37
Multicast .......................................................................................................................3-38
Auto-Video Configuration .......................................................................................3-38
IGMP Snooping ......................................................................................................3-39
IGMP Snooping Querier .........................................................................................3-49
Forwarding Database ...................................................................................................3-53
MAC Address Table ...............................................................................................3-54
Dynamic Address Configuration .............................................................................3-55
Static MAC Address ...............................................................................................3-56
Chapter 4
Configuring Quality of Service
Class of Service ..............................................................................................................4-1
Basic CoS Configuration ..........................................................................................4-2
CoS Interface Configuration .....................................................................................4-4
Interface Queue Configuration .................................................................................4-5
802.1p to Queue Mapping ........................................................................................4-7
DSCP to Queue Mapping .........................................................................................4-9
Differentiated Services .................................................................................................4-10
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Defining DiffServ ....................................................................................................4-10
Diffserv Configuration .............................................................................................4-11
Class Configuration ................................................................................................4-13
Policy Configuration ...............................................................................................4-17
Service Configuration .............................................................................................4-23
Service Statistics ....................................................................................................4-24
Chapter 5
Managing Device Security
Management Security Settings .......................................................................................5-1
Change Password ....................................................................................................5-2
RADIUS Configuration .............................................................................................5-3
Configuring TACACS+ ...........................................................................................5-10
Authentication List Configuration ...........................................................................5-13
Configuring Management Access .................................................................................5-14
HTTP Configuration ...............................................................................................5-15
Secure HTTP Configuration ...................................................................................5-16
Certificate Download ..............................................................................................5-18
Access Profile Configuration ..................................................................................5-19
Access Rule Configuration .....................................................................................5-21
Port Authentication .......................................................................................................5-23
802.1X Configuration .............................................................................................5-24
Port Authentication .................................................................................................5-25
Port Summary ........................................................................................................5-30
Traffic Control ...............................................................................................................5-32
MAC Filter Configuration ........................................................................................5-32
MAC Filter Summary ..............................................................................................5-34
Storm Control .........................................................................................................5-35
Port Security Configuration ....................................................................................5-37
Port Security Interface Configuration .....................................................................5-38
Security MAC Address ...........................................................................................5-40
Protected Ports Membership ..................................................................................5-41
Configuring Access Control Lists ..................................................................................5-42
ACL Wizard ............................................................................................................5-43
MAC ACL ...............................................................................................................5-44
MAC Rules .............................................................................................................5-46
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MAC Binding Configuration ....................................................................................5-48
MAC Binding Table ................................................................................................5-49
IP ACL ....................................................................................................................5-50
IP Rules ..................................................................................................................5-52
IP Extended Rule ...................................................................................................5-53
IP Binding Configuration ........................................................................................5-58
IP Binding Table .....................................................................................................5-59
Chapter 6
Monitoring the System
Ports ...............................................................................................................................6-1
Switch Statistics .......................................................................................................6-1
Port Statistics ...........................................................................................................6-4
Port Detailed Statistics .............................................................................................6-5
EAP Statistics .........................................................................................................6-13
System Logs .................................................................................................................6-14
Memory Logs .........................................................................................................6-15
FLASH Log Configuration ......................................................................................6-17
Server Log Configuration .......................................................................................6-19
Trap Logs ...............................................................................................................6-21
Event Logs .............................................................................................................6-22
Port Mirroring ................................................................................................................6-24
Multiple Port Mirroring ............................................................................................6-24
Chapter 7
Maintenance
Reset ..............................................................................................................................7-1
Device Reboot ..........................................................................................................7-1
Factory Default .........................................................................................................7-2
Upload File From Switch ................................................................................................7-3
Download File To Switch ................................................................................................7-5
TFTP File Download ................................................................................................7-5
HTTP File Download ................................................................................................7-8
File Management ............................................................................................................7-9
Dual Image Configuration ......................................................................................7-10
Dual Image Status ..................................................................................................7-11
Troubleshooting ............................................................................................................7-12
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Ping ........................................................................................................................7-12
Traceroute ..............................................................................................................7-14
Chapter 8
Help
Online Help .....................................................................................................................8-1
Support .....................................................................................................................8-1
User Guide ...............................................................................................................8-2
Appendix A
Hardware Specifications and Default Values
GS108T Gigabit Smart Switch and GS110TP Gigabit Smart Switch Specifications .....A-1
GS108T and GS110TP Switch Features and Defaults ................................................. A-2
Appendix B
Configuration Examples
Virtual Local Area Networks (VLANs) ............................................................................ B-1
VLAN Example Configuration ................................................................................. B-3
Access Control Lists (ACLs) .......................................................................................... B-4
MAC ACL Example Configuration ...........................................................................B-4
Standard IP ACL Example Configuration ................................................................B-6
Differentiated Services (DiffServ) .................................................................................. B-7
Class ....................................................................................................................... B-8
DiffServ Traffic Classes ........................................................................................... B-8
Creating Policies .....................................................................................................B-9
DiffServ Example Configuration ............................................................................ B-10
802.1X .........................................................................................................................B-12
802.1X Example Configuration ............................................................................. B-14
MSTP ...........................................................................................................................B-15
MSTP Example Configuration ...............................................................................B-17
Index
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About This Manual
The NETGEAR® GS108T and GS110TP Software Administration Manual describes how to
configure and operate the GS108T Smart Switch and GS110TP Gigabit Smart Switch by using the
Web-based graphical user interface (GUI). This manual describes the software configuration
procedures and explains the options available within those procedures.
Audience
The information in this manual is intended for readers with intermediate to advanced system
management skills.
This document was created primarily for the system administrator who wishes to install and
configure the GS108T Smart Switch and GS110TP Gigabit Smart Switch in a network. It assumes
that the reader has a general understanding of switch platforms and a basic knowledge of Ethernet
and networking concepts. To install this switch, it is not necessary to understand and use all of its
capabilities. Once basic configuration is performed, it will function in a network using its
remaining factory default settings. However, a greater level of configuration—anywhere from the
basic up to the maximum possible—will allow your network the full benefit of the switch’s
features. The Web interface simplifies this configuration at all levels.
Organization
The GS108T and GS110TP Smart Switch Software Administration Manual contains the following
chapters:
• Chapter 1, “Getting Started”on page 1-1 contains information about performing the initial
system configuration and accessing the user interface.
• Chapter 2, “Configuring System Information” on page 2-1 describes how to configure
administrative features such as SNMP, DHCP, and port information.
• Chapter 3, “Configuring Switching Information” on page 3-1 describes how to manage and
monitor the layer 2 switching features.
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• Chapter 4, “Configuring Quality of Service” on page 4-1 describes how to manage the Access
Control Lists (ACLs), and how to configure the Differentiated Services and Class of Service
features.
• Chapter 5, “Managing Device Security” on page 5-1 contains information about configuring
switch security information such as port access control, TACACS+, and RADIUS server
settings.
• Chapter 6, “Monitoring the System” on page 6-1 describes how to view a variety of
information about the switch and its ports, and to configure how the switch monitors events.
• Chapter 7, “Maintenance” on page 7-1 describes features to help you manage the switch.
• Chapter 8, “Help”on page 8-1 describes how to access Online Help resources for the switch.
• Appendix A, “Hardware Specifications and Default Values” on page A-1 contains hardware
specifications and default values on the GS108T and GS110TP Smart Switches.
• Appendix B, “Configuration Examples” on page B-1 contains examples of how to configure
various features on the GS108T and GS110TP Smart Switches, such as VLANs and ACLs .
Note: Refer to the release notes for the GS108T Smart Switch and GS110TP Gigabit
Smart Switch for information about issues and workarounds.
Conventions, Formats and Scope
The conventions, formats, and scope of this manual are described in the following paragraphs:
• Typographical Conventions. This manual uses the following typographical conventions:
Italic Emphasis, books, CDs, file and server names, extensions
Bold User input, IP addresses, GUI screen text
Fixed Command prompt, CLI text, code
italic URL links
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• Formats. This manual uses the following formats to highlight special messages:
Note: A note provides additional information about a feature or technology.
Tip: This format is used to highlight a procedure that will save time or resources.
Warning: A caution provides information about critical aspects of the configuration,
combination of settings, events, or procedures that can adversely affect
network connectivity, security, and so on.
Danger: This is a safety warning. Failure to take heed of this notice may result in
personal injury or death.
• Scope. This manual is written for the GS108T and GS110TP Smart Switches according to
these specifications:
Product Version GS108T Smart Switch and GS110TP Gigabit Smart Switch
Manual Publication Date April 2010
Note: Product updates for the GS108T and GS110TP Smart Switches are available on the
NETGEAR, Inc. Website at
http://kbserver.netgear.com/products/GS108T.asp
http://kbserver.netgear.com/products/GS110TP.asp
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How to Print this Manual
Your computer must have the free Adobe Acrobat reader installed in order to view and print PDF
files. The Acrobat reader is available on the Adobe Web site at
http://www.adobe.com.
• Printing a PDF version of the Complete Manual. Click the print icon in the upper left of
your browser window.
Tip: If your printer supports printing two pages on a single sheet of paper, you can
save paper and printer ink by selecting this feature.
Revision History
Part Number
202-10603-01 1.0 March 2010 GS108T Hardware v2 and new software features
202-10603-02 1.0 April 2010 GS110TP Initial release
xiv
Version
Number
Date Description
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Chapter 1
Getting Started
This chapter provides an overview of starting your NETGEAR GS108T or GS110TP Smart
Switch and accessing the user interface. It also leads you through the steps to use the Smart
Control Center utility. This chapter contains the following sections:
• “Switch Management Interface” on page 1-1
• “Connecting the Switch to the Network” on page 1-2
• “Switch Discovery in a Network with a DHCP Server” on page 1-3
• “Switch Discovery in a Network without a DHCP Server” on page 1-5
• “Configuring the Network Settings on the Administrative System” on page 1-7
• “Web Access” on page 1-8
• “Smart Control Center Utilities” on page 1-9
• “Understanding the User Interfaces” on page 1-15
• “Interface Naming Convention” on page 1-21
Switch Management Interface
The NETGEAR GS108T and GS110TP Smart Switches contain an embedded Web server and
management software for managing and monitoring switch functions. The GS108T and GS110TP
function as simple switches without the management software. However, you can use the
management software to configure more advanced features that can improve switch efficiency and
overall network performance.
Web-based management lets you monitor, configure, and control your switch remotely using a
standard Web browser instead of using expensive and complicated SNMP software products. From
your Web browser, you can monitor the performance of your switch and optimize its configuration
for your network. You can configure all switch features, such as VLANs, QoS, and ACLs by using
the Web-based management interface.
1-1
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NETGEAR provides the Smart Control Center utility with this product. This program runs under
Microsoft
®
Windows® XP, Windows 2000, or Windows Vista® and provides a front end that
discovers the switches on your network segment (L2 broadcast domain). When you power up your
switch for the first time, use the Smart Control Center to discover the switch and view the network
information that has been automatically assigned to the switch by a DHCP server; or, if no DHCP
server is present on the network, use the Smart Control Center to discover the switch and assign
static network information.
In addition to enabling NETGEAR switch discovery, the Smart Control Center provides several
utilities to help you maintain the NETGEAR switches on your network, such as password
management, firmware upgrade, and configuration file backup. For more information, see
“Smart
Control Center Utilities” on page 1-9.
Connecting the Switch to the Network
To enable remote management of the switch through a Web browser or SNMP, you must connect
the switch to the network and configure it with network information (an IP address, subnet mask,
and default gateway). The switch has a default IP address of 192.168.0.239 and a default subnet
mask of 255.255.255.0.
Use one of the following three methods to change the default network information on the switch:
• Dynamic assignment through DHCP—DHCP is enabled by default on the switch. If you
connect the switch to a network with a DHCP server, the switch obtains its network
information automatically. You can use the Smart Control Center to discover the
automatically-assigned network information. For more information, see
“Switch Discovery in
a Network with a DHCP Server” on page 1-3
• Static assignment through the Smart Control Center—If you connect the switch to a network
that does not have a DHCP server, you can use the Smart Control Center to assign a static IP
address, subnet mask, and default gateway. For more information, see
“Switch Discovery in a
Network without a DHCP Server” on page 1-5
• Static assignment by connecting from a local host—If you do not want to use the Smart
Control Center to assign a static address, you can connect to the switch from a host
(administrative system) in the 192.168.0.0/24 network and change the settings by using the
Web-based management interface on the switch. For information about how to set the IP
address on the administrative system so it is in the same subnet as the default IP address of the
switch, see
1-2 Getting Started
“Configuring the Network Settings on the Administrative System” on page 1-7.
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GS108T and GS110TP Smart Switch Software Administration Manual
Switch Discovery in a Network with a DHCP Server
This section describes how to set up your switch in a network that has a DHCP server. The DHCP
client on the switch is enabled by default. When you connect it to your network, the DHCP server
will automatically assign an IP address to your switch. Use the Smart Control Center to discover
the IP address automatically assigned to the switch.
To install the switch in a network with a DHCP server, use the following steps:
1. Connect the switch to a network with a DHCP server.
2. Power on the switch by connecting its AC-DC power adapter. For the GS108T, you can also
power on the switch by connecting Port 1 to a PoE Power Sourcing Equipment (PSE).
3. Install the Smart Control Center on your computer.
4. Start the Smart Control Center.
5. Click Discover for the Smart Control Center to find your switch. You should see a screen
similar to the one shown in Figure 1-1.
Figure 1-1
Getting Started 1-3
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6. Make a note of the displayed IP address assigned by the DHCP server. You will need this
value to access the switch directly from a Web browser (without using the Smart Control
Center).
Figure 1-2
7. Select your switch by clicking the line that displays the switch, then click the
Web Browser Access button. The Smart Control Center displays a login window similar to
Figure 1-3.
Figure 1-3
Use your Web browser to manage your switch. The default password is password. Then use
this page to proceed to management of the switch covered in “Using the Web Interface” on
page 1-15.
1-4 Getting Started
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Switch Discovery in a Network without a DHCP Server
This section describes how to use the Smart Control Center to set up your switch in a network
without a DHCP server. If your network has no DHCP service, you must assign a static IP address
to your switch. If you choose, you can assign it a static IP address, even if your network has DHCP
service.
To assign a static IP address:
1. Connect the switch to your existing network.
2. Power on the switch by plugging in the AC-DC power adapter. For the GS108T, you can also
power on the switch by connecting Port 1 to a PoE PSE.
3. Install the Smart Control Center on your computer.
4. Start the Smart Control Center.
5. Click Discover for the Smart Control Center to find your GS108T or GS110TP switch. The
utility broadcasts Layer 2 discovery packets within the broadcast domain to discover the
switch.You should see a screen similar to
Figure 1-1 on page 1-3.
Getting Started 1-5
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6. Select the switch, then click Configure Device. The page expands to display additional fields
at the bottom of the page, as Figure 1-4 shows.
Figure 1-4
7. Choose the Disabled radio box to disable DHCP.
8. Enter the static switch IP address, gateway IP address and subnet mask, and then type your
password and click Apply.
Note: You must enter the current password every time you use the Smart Control
Center to update the switch setting. The default password is password.
Please ensure that your PC and the switch are in the same subnet. Make a note of these settings for
later use.
1-6 Getting Started
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Configuring the Network Settings on the Administrative System
If you choose not to use the Smart Control Center to configure the network information on the
switch, you can connect directly to the switch from an administrative system, such as a PC or
laptop computer. The IP address of the administrative system must be in the same subnet as the
default IP address on the switch. For most networks, this means you must change the IP address of
the administrative system to be on the same subnet as the default IP address of the switch
(192.168.0.239).
®
To change the IP address on an administrative system running a Microsoft
system, open the Internet Protocol (TCP/IP) properties screen that you access from the Local Area
Connection properties, as shown in Figure 1-5. You need Windows Administrator privileges to
change these settings.
Windows® operating
Figure 1-5
Getting Started 1-7
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Warning: When you change the IP address of your administrative system, you will
loose your connection to the rest of the network. Be sure to write down
your current network address settings before you change them.
To modify the network settings on your administrative system:
1. On your PC, access the MS Windows operating system TCP/IP Properties.
2. Set the IP address of the administrative system to an address in the 192.168.0.0 network, such
as 192.168.0.200. The IP address must be different from that of the switch but within the same
subnet.
3. Click OK.
To configure a static address on the switch:
1. Use a straight-through cable to connect the Ethernet port on the administrative system directly
to any port on the GS108T or GS110TP.
2. Open a Web browser on your PC and connect to the management interface as described in
“Web Access” on page 1-8.
3. Change the network settings on the switch to match those of your network (this procedure is
described in “IP Configuration” on page 2-3).
After you change the network settings on the switch, return the network configuration on your
administrative system to the original settings.
Web Access
To access the GS108T or GS110TP management interface, use one of the following methods:
• From the Smart Control Center, select the switch and click Web Browser Access.
• Open a Web browser and enter the IP address of the switch in the address field.
You must be able to ping the IP address of the GS108T or GS110TP management interface from
your administrative system for Web access to be available. If you used the Smart Control Center to
set up the IP address and subnet mask, either with or without a DHCP server, use that IP address in
the address field of your Web browser. If you did not change the IP address of the switch from the
default value, enter 192.168.0.239 into the address field.
Clicking Web Browser Access on the Smart Control Center or accessing the switch directly from
your Web browser displays the login screen in Figure 1-6 on page 1-9.
1-8 Getting Started
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Figure 1-6
Smart Control Center Utilities
In addition to device discovery and network address assignment, the Smart Control Center
includes several maintenance features. This section describes the following Smart Control Center
utilities:
• “Network Utilities” on page 1-9
• “Configuration Upload and Download” on page 1-10
• “Firmware Upgrade” on page 1-12
Network Utilities
From the Network tab, you can perform the following functions:
• DHCP Refresh—Forces the switch to release the current bindings and request new address
information from the DHCP server.
• Reboot Device—Reboots the selected device.
• Web Browser Access—Launches a Web browser and connects to the management interface
for the selected device.
• Configure Device—Allows you to change network information for the switch such as the IP
address, and DHCP client mode.
Getting Started 1-9
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• Change Password—Allows you to set a new password for the device. In this process, you are
required to enter the old password and to confirm the new one, which can contain up to 20
ASCII characters.
From the Maintenance tab, you can upload or download a switch configuration file and upgrade
the switch firmware.
Configuration Upload and Download
When you make changes to the switch, the configuration information is stored in a file on the
switch. You can backup the configuration by uploading the configuration file from the switch to an
administrative system. You can download a saved configuration file from the administrative
system to the switch. The configuration file you download to the switch overwrites the running
configuration on the switch.
Configuration upload and download is useful if you want to save a copy of the current switch
configuration (Upload Configuration) before you make changes. If you do not like the changes,
you can use the Download Configuration option to restore the switch to the settings in the saved
configuration file.
To save a copy of the current switch configuration on your administrative system:
1. Click the Maintenance tab and select the device with the configuration to save.
2. Click Upload Configuration.
3. From the Browse for Folder window that appears, navigate to and select the folder where you
want to store the configuration file.
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4. Click OK.
5. Enter the switch password and click Apply.
The file is uploaded to the administrative computer as a *.cfg file. You can open it and view
the contents with a text editor.
To restore the configuration to a previously saved version:
1. Click the Maintenance tab and select the device with the configuration to restore.
2. Click Download Configuration.
3. From the Select a Configuration window that appears, navigate to and select the
configuration file to download to the switch.
4. Click Open.
5. Enter the switch password and click Apply to begin the download process.
Optionally, you can schedule a different date and time to download the configuration file. To
delay the download process, clear the Run Now? check box and enter a date and time to
complete the download.
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Note: Click the Tasks tab to view status information about the configuration download.
Firmware Upgrade
The application software for the GS108T and GS110TP Smart Switches is upgradeable, enabling
your switch to take advantage of improvements and additional features as they become available.
The upgrade procedure and the required equipment are described in this section. This procedure
assumes that you have downloaded or otherwise obtained the firmware upgrade and that you have
it available as a binary file on your computer. This procedure uses the TFTP protocol to implement
the transfer from computer to switch.
Note: You can also upgrade the firmware using the TFTP Download and HTTP
Download features mentioned in this book. See “Download File To Switch” on
page 7-5.
To upgrade your firmware:
1. Click the Maintenance tab, and then click the Firmware link directly below the tabs (see
Figure 1-1 on page 1-3).
2. Select the switch to upgrade and click Download Firmware.
3. From the Select new firmware window that appears, navigate to and select the firmware
image to download to the switch.
4. Click Open.
5. Enter the switch password to continue downloading the firmware.
6. Click Apply to download the firmware and upgrade the switch with the new image.
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Figure 1-7
Optionally, you can schedule a different date and time to download and install the firmware
image. To delay the upgrade process, clear the Run Now? check box and enter a date and time
to complete the upgrade.
7. When the process is complete, the switch automatically reboots.
Note: Click the Tasks tab to view status information about the firmware upgrade.
Warning: It is important that you do not power-off the administrative system or the
switch while the firmware upgrade is in progress.
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Viewing and Managing Tasks
From the Tasks tab, you can view information about configuration downloads and firmware
upgrades that have already occurred, are in progress, or are scheduled to take place at a later time.
You can also delete or reschedule selected tasks. Figure 1-8 shows the Tasks page.
Figure 1-8
The following list describes the command buttons that are specific to the Tasks page:
• Delete Task—Remove a completed or schedule task from the list.
• Reschedule—Change the scheduled date and time for a pending firmware upgrade or
configuration download.
• Select Range—Select all tasks that occurred or are scheduled to occur within a certain period
of time.
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Understanding the User Interfaces
GS108T and GS110TP software includes a set of comprehensive management functions for
configuring and monitoring the system by using one of the following methods:
• Web user interface
• Simple Network Management Protocol (SNMP)
Each of the standards-based management methods allows you to configure and monitor the
components of the GS108T and GS110TP software. The method you use to manage the system
depends on your network size and requirements, and on your preference.
The GS108T and GS110TP Smart Switch Software Administration Manual describes how to use
the Web-based interface to manage and monitor the system.
Using the Web Interface
To access the switch by using a Web browser, the browser must meet the following software
requirements:
• HTML version 4.0, or later
• HTTP version 1.1, or later
• Java Runtime Environment 1.6 or later
Use the following procedures to log on to the Web interface:
1. Open a Web browser and enter the IP address of the switch in the Web browser address field.
2. The factory default password is password. Type the password into the field on the login
screen, as shown in
sensitive.
3. After the system authenticates you, the System Information page displays.
Getting Started 1-15
Figure 1-6 on page 1-9, and then click Login. Passwords are case
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Figure 1-9 shows the layout of the Smart Switch Web interface.
Navigation Tab Feature Link
Logout
Button
Help LInk
Help Page
Page Menu
Configuration Status and Options
Figure 1-9
Navigation Tabs, Feature Links, and Page Menu
The navigation tabs along the top of the Web interface give you quick access to the various switch
functions. The tabs are always available and remain constant, regardless of which feature you
configure.
When you select a tab, the features for that tab appear as links directly under the tabs. The feature
links in the blue bar change according to the navigation tab that is selected.
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The configuration pages for each feature are available as links in the page menu on the left side of
the page. Some items in the menu expand to reveal multiple configuration pages, as Figure 1-10.
shows. When you click a menu item that includes multiple configuration pages, the item becomes
preceded by a down arrow symbol and expands to display the additional pages.
Page Link
Configuration
Pages
Figure 1-10
Configuration and Monitoring Options
The area directly under the feature links and to the right of the page menu displays the
configuration information or status for the page you select. On pages that contain configuration
options, you can input information into fields or select options from drop-down menus.
Each page contains access to the HTML-based help that explains the fields and configuration
options for the page. Each page also contains command buttons.
Table 1-1 shows the command buttons that are used throughout the pages in the Web interface:
Table 1-1. Common Command Buttons
Button Function
Add Clicking Add adds the new item configured in the heading row of a table.
Apply Clicking the Apply button sends the updated configuration to the switch. Configuration
changes take effect immediately.
Cancel Clicking Cancel cancels the configuration on the screen and resets the data on the screen
to the latest value of the switch.
Delete Clicking Delete removes the selected item.
Refresh Clicking the Refresh button refreshes the page with the latest information from the device.
Logout Clicking the Logout button ends the session.
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Device View
The Device View is a Java
®
applet that displays the ports on the switch. This graphic provides an
alternate way to navigate to configuration and monitoring options. The graphic also provides
information about device ports, current configuration and status, table information, and feature
components.
The Device View is available from the System Device View page.
The port coloring indicates whether a port is currently active. Green indicates that the port is
enabled, red indicates that an error has occurred on the port, or red indicates that the link is
disabled.
Figure 1-11 shows the Device View of the GS108T.
Figure 1-11
Figure 1-12 shows the Device View of the GS110TP.
Figure 1-12
Click the port you want to view or configure to see a menu that displays statistics and
configuration options. Click the menu option to access the page that contains the configuration or
monitoring options.
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Figure 1-13
If you click the graphic, but do not click a specific port, the main menu appears, as Figure 1-14
shows. This menu contains the same option as the navigation tabs at the top of the page.
Figure 1-14
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Help Page Access
Every page contains a link to the online help , which contains information to assist in
configuring and managing the switch. The online help pages are context sensitive. For example, if
the IP Addressing page is open, the help topic for that page displays if you click Help. Figure 1-9
shows the location of the Help link on the Web interface.
User-Defined Fields
User-defined fields can contain 1 to 159 characters, unless otherwise noted on the configuration
Web page. All characters may be used except for the following (unless specifically noted in for
that feature):
\ <
/ >|
* |
?
Using SNMP
The GS108T and GS110TP software supports the configuration of SNMP groups and users that
can manage traps that the SNMP agent generates.
GS108T and GS110TP switches use both standard public MIBs for standard functionality and
private MIBs that support additional switch functionality. All private MIBs begin with a “-” prefix.
The main object for interface configuration is in -SWITCHING-MIB, which is a private MIB.
Some interface configurations also involve objects in the public MIB, IF-MIB.
SNMP is enabled by default. The System Management System Information Web page,
which is the page that displays after a successful login, displays the information you need to
configure an SNMP manager to access the switch.
Any user can connect to the switch using the SNMPv3 protocol, but for authentication and
encryption, the switch supports only one user which is admin; therefore there is only one profile
that can be created or modified.
To configure authentication and encryption settings for the SNMPv3 admin profile by using the
Web interface:
1. Navigate to the System SNMP SNMPv3 User Configuration page.
2. To enable authentication, select an Authentication Protocol option, which is either MD5 or
SHA.
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3. To enable encryption, select the DES option in the Encryption Protocol field. Then, enter an
encryption code of eight or more alphanumeric characters in the Encryption Key field.
4. Click Apply.
To access configuration information for SNMPv1 or SNMPv2, click System SNMP
SNMPv1/v2 and click the page that contains the information to configure.
Interface Naming Convention
The GS108T and GS110TP support physical and logical interfaces. Interfaces are identified by
their type and the interface number. The physical ports are gigabit interfaces and are numbered on
the front panel. You configure the logical interfaces by using the software. Table 1-2 describes the
naming convention for all interfaces available on the switch.
Table 1-2. Types of Interface
Interface Description Example
Physical The physical ports are gigabit Ethernet
interfaces and are numbered sequentially
starting from one.
Link Aggregation Group (LAG) LAG interfaces are logical interfaces that are
only used for bridging functions.
CPU Management Interface This is the internal switch interface responsible
for the switch base MAC address. This interface
is not configurable and is always listed in the
MAC Address Table.
g1, g2, g3
l1, l2, l3
LAG1, LAG2
c1
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Chapter 2
Configuring System Information
Use the features in the System tab to define the switch’s relationship to its environment. The
System tab contains links to the following features:
• “Management” on page 2-1
• “PoE (GS110TP Only)” on page 2-18
• “SNMP” on page 2-25
• “LLDP” on page 2-31
• “Services — DHCP Filtering” on page 2-45
Management
This section describes how to display the switch status and specify some basic switch information,
such as the management interface IP address, system clock settings, and DNS information. From
the Management link, you can access the following pages:
• “System Information” on page 2-1
• “IP Configuration” on page 2-3
• “Time” on page 2-5
• “Denial of Service” on page 2-12
• “DNS” on page 2-15
• “Green Ethernet Configuration” on page 2-17
System Information
After a successful login, the System Information page displays. Use this page to configure and
view general device information.
To display the System Information page, click System Management System Information. A
screen similar to the following displays.
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Figure 2-1
To define system information:
1. Open the System Information page.
2. Define the following fields:
• System Name. Enter the name you want to use to identify this switch. You may use up to
31 alphanumeric characters. The factory default is blank.
• System Location. Enter the location of this switch. You may use up to 31 alphanumeric
characters. The factory default is blank.
• System Contact. Enter the contact person for this switch. You may use up to 31
alphanumeric characters. The factory default is blank.
3. Click Apply.
The system parameters are applied, and the device is updated.
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The following table describes the status information the System Page displays.
Table 2-1. System Description Fields
Field Description
Serial Number The serial number of the switch.
System Object ID The base object ID for the switch's enterprise MIB.
Date & Time The current date and time.
System Up Time Displays the number of days, hours, and minutes since the last system
restart.
Base MAC Address The universally assigned network address.
Model Name The model name of the switch.
Boot Version The boot code version of the switch.
Software Version The software version of the switch.
IP Configuration
Use the IP Configuration page to configure network information for the management interface,
which is the logical interface used for in-band connectivity with the switch through any of the
switch's front panel ports. The configuration parameters associated with the switch's network
interface do not affect the configuration of the front panel ports through which traffic is switched
or routed.
To access the page, click System Management IP Configuration. A screen similar to the
following displays.
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Figure 2-2
To configure the network information for the management interface:
1. Select the appropriate radio button to determine how to configure the network information for
the switch management interface:
• Dynamic IP Address (DHCP). Specifies that the switch must obtain the IP address
through a DHCP server.
• Dynamic IP Address (BOOTP). Specifies that the switch must obtain the IP address
through a BootP server.
• Static IP Address. Specifies that the IP address, subnet mask, and default gateway must
be manually configured. Enter this information in the fields below this radio button.
2. If you selected the Static IP Address option, configure the following network information:
• IP Address. The IP address of the network interface. The factory default value is
192.168.0.239. Each part of the IP address must start with a number other than zero. For
example, IP addresses 001.100.192.6 and 192.001.10.3 are not valid.
• Subnet Mask. The IP subnet mask for the interface. The factory default value is
255.255.255.0.
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• Default Gateway. The default gateway for the IP interface. The factory default value is
192.168.0.254.
3. Specify the VLAN ID for the management VLAN.
The management VLAN is used to establish an IP connection to the switch from a workstation
that is connected to a port in the same VLAN. If not specified, the active management VLAN
ID is 1 (default), which allows an IP connection to be established through any port.
When the management VLAN is set to a different value, an IP connection can be made only
through a port that is part of the management VLAN. It is also mandatory that the port VLAN
ID (PVID) of the port to be connected in that management VLAN be the same as the
management VLAN ID.
The management VLAN has the following requirements:
• Only one management VLAN can be active at a time.
• When a new management VLAN is configured, connectivity through the existing
management VLAN is lost.
• The management station should be reconnected to the port in the new management
VLAN.
Note: Make sure that the VLAN to be configured as the management VLAN exists.
And make sure that the PVID of at least one port that is a port of the VLAN is
the same as the management VLAN ID. For information about creating
VLANs and configuring the PVID for a port, see “VLANs” on page 3-10.
4. If you change any of the network connection parameters, click Apply to apply the changes to
the system.
5. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
Time
GS108T and GS110TP software supports the Simple Network Time Protocol (SNTP). You can
also set the system time manually
SNTP assures accurate network device clock time synchronization up to the millisecond. Time
synchronization is performed by a network SNTP server. GS108T and GS110TP software operates
only as an SNTP client and cannot provide time services to other systems.
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Time sources are established by Stratums. Stratums define the accuracy of the reference clock. The
higher the stratum (where zero is the highest), the more accurate the clock. The device receives
time from stratum 1 and above since it is itself a stratum 2 device.
The following is an example of stratums:
• Stratum 0: A real-time clock is used as the time source, for example, a GPS system.
• Stratum 1: A server that is directly linked to a Stratum 0 time source is used. Stratum 1 time
servers provide primary network time standards.
• Stratum 2: The time source is distanced from the Stratum 1 server over a network path. For
example, a Stratum 2 server receives the time over a network link, via NTP, from a Stratum 1
server.
Information received from SNTP servers is evaluated based on the time level and server type.
SNTP time definitions are assessed and determined by the following time levels:
• T1: Time at which the original request was sent by the client.
• T2: Time at which the original request was received by the server.
• T3: Time at which the server sent a reply.
• T4: Time at which the client received the server's reply.
The device can poll Unicast server types for the server time.
Polling for Unicast information is used for polling a server for which the IP address is known.
SNTP servers that have been configured on the device are the only ones that are polled for
synchronization information. T1 through T4 are used to determine server time. This is the
preferred method for synchronizing device time because it is the most secure method. If this
method is selected, SNTP information is accepted only from SNTP servers defined on the device
using the SNTP Server Configuration page.
The device retrieves synchronization information, either by actively requesting information or at
every poll interval.
Time Configuration
Use the Time Configuration page to view and adjust date and time settings.
To display the Time Configuration page, click System Management Time SNTP Global
Configuration.
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Figure 2-3
To configure the time by using the CPU clock cycle as the source:
1. From the Clock Source field, select Local.
2. In the Date field, enter the date in the DD/MM/YYYY format.
3. In the Time field, enter the time in HH:MM:SS format.
Note: If you do not enter a date and time, the switch will calculate the date and time
using the CPU’s clock cycle.
When the Clock Source is set to Local, the Time Zone field is grayed out (disabled):
4. Click Apply to send the updated configuration to the switch. Configuration changes occur
immediately.
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To configure the time through SNTP:
1. From the Clock Source field, select SNTP.
When the Clock Source is set to SNTP, the Date and Time fields are grayed out (disabled).
The switch gets the date and time from the network.
2. Use the menu to select the Coordinated Universal Time (UTC) time zone in which the switch
is located, expressed as the number of hours. The options in the Time Zone menu specify the
time difference from UTC time zone.
3. Click Apply to send the updated configuration to the switch. Configuration changes take
effect immediately.
4. Use the SNTP Server Configuration page to configure the SNTP server settings, as
described in
“SNTP Server Configuration” on page 2-9.
5. Click Refresh to refresh the page with the most current data from the switch.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
The SNTP Global Status table on the Time Configuration page displays information about the
system’s SNTP client. The following table describes the SNTP Global Status fields.
Table 2-2. SNTP Global Status Fields
Field Description
Version Specifies the SNTP Version the client supports.
Supported Mode Specifies the SNTP modes the client supports. Multiple modes may be
supported by a client.
Last Update Time Specifies the local date and time (UTC) the SNTP client last updated the
system clock.
Last Attempt Time Specifies the local date and time (UTC) of the last SNTP request or receipt
of an unsolicited message.
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Table 2-2. SNTP Global Status Fields (continued)
Field Description
Last Attempt Status Specifies the status of the last SNTP request or unsolicited message for both
unicast mode. If no message has been received from a server, a status of
Other is displayed. These values are appropriate for all operational modes:
• Other: None of the following enumeration values.
• Success: The SNTP operation was successful and the system time was
updated.
• Request Timed Out: A directed SNTP request timed out without receiving
a response from the SNTP server.
• Bad Date Encoded: The time provided by the SNTP server is not valid.
• Version Not Supported: The SNTP version supported by the server is not
compatible with the version supported by the client.
• Server Unsynchronized: The SNTP server is not synchronized with its
peers. This is indicated via the 'leap indicator' field on the SNTP message.
• Server Kiss Of Death: The SNTP server indicated that no further queries
were to be sent to this server. This is indicated by a stratum field equal to 0
in a message received from a server.
Server IP Address Specifies the IP address of the server for the last received valid packet. If no
message has been received from any server, an empty string is shown.
Address Type Specifies the address type of the SNTP Server address for the last received
valid packet.
Server Stratum Specifies the claimed stratum of the server for the last received valid packet.
Reference Clock Id Specifies the reference clock identifier of the server for the last received valid
packet.
Server Mode Specifies the mode of the server for the last received valid packet.
Unicast Sever Max Entries Specifies the maximum number of unicast server entries that can be
configured on this client.
Unicast Server Current
Entries
Specifies the number of current valid unicast server entries configured for
this client.
Click Refresh to refresh the page with the most current data from the switch.
SNTP Server Configuration
Use the SNTP Server Configuration page to view and modify information for adding and
modifying Simple Network Time Protocol SNTP servers.
To display the SNTP Server Configuration page, click System Management Time SNTP
Server Configuration.
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Figure 2-4
To configure a new SNTP Server:
1. Enter the appropriate SNTP server information in the available fields:
• Server Type. Specifies whether the address for the SNTP server is an IP address (IPv4) or
hostname (DNS).
• Address. Enter the IP address or the hostname of the SNTP server.
• Port. Enter a port number on the SNTP server to which SNTP requests are sent. The valid
range is 1–65535. The default is 123.
• Priority . Specifies the priority of this server entry in determining the sequence of servers
to which SNTP requests are sent. Enter a priority from 1–3, with 1 being the default and
the highest priority. Servers with lowest numbers have priority.
• Version. Enter the protocol version number. The range is 1–4.
2. Click Add.
3. Repeat the previous steps to add additional SNTP servers. You can configure up to three SNTP
servers.
4. To removing an SNTP server, select the check box next to the configured server to remove,
and then click Delete. The entry is removed, and the device is updated.
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5. To change the settings for an existing SNTP server, select the check box next to the configured
server and enter new values in the available fields, and then click Apply. Configuration
changes take effect immediately.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
The SNTP Server Status table displays status information about the SNTP servers configured on
your switch. The following table describes the SNTP Global Status fields.
Table 2-3. SNTP Server Status Fields
Field Description
Address Specifies all the existing Server Addresses. If no Server configuration exists,
a message saying “No SNTP server exists” flashes on the screen.
Last Update Time Specifies the local date and time (UTC) that the response from this server
was used to update the system clock.
Last Attempt Time Specifies the local date and time (UTC) that this SNTP server was last
queried.
Last Attempt Status Specifies the status of the last SNTP request to this server. If no packet has
been received from this server, a status of Other is displayed:
• Other: None of the following enumeration values.
• Success: The SNTP operation was successful and the system time was
updated.
• Request Timed Out: A directed SNTP request timed out without receiving
a response from the SNTP server.
• Bad Date Encoded: The time provided by the SNTP server is not valid.
• Version Not Supported: The SNTP version supported by the server is not
compatible with the version supported by the client.
• Server Unsynchronized: The SNTP server is not synchronized with its
peers. This is indicated via the 'leap indicator' field on the SNTP message.
• Server Kiss Of Death: The SNTP server indicated that no further queries
were to be sent to this server. This is indicated by a stratum field equal to 0
in a message received from a server.
Requests Specifies the number of SNTP requests made to this server since last agent
reboot.
Failed Requests Specifies the number of failed SNTP requests made to this server since last
reboot.
Click Refresh to refresh the page with the most current data from the switch.
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Denial of Service
Use the Denial of Service (DoS) page to configure DoS control. The GS108T and GS110TP
software provides support for classifying and blocking specific types of DoS attacks. You can
configure your system to monitor and block six types of attacks:
• SIP=DIP: Source IP address = Destination IP address.
• First Fragment: TCP Header size is smaller than the configured value.
• TCP Fragment: IP Fragment Offset = 1.
• TCP Flag: TCP Flag SYN set and Source Port < 1024 or TCP Control Flags = 0 and TCP
Sequence Number = 0 or TCP Flags FIN, URG, and PSH set and TCP Sequence Number = 0
or TCP Flags SYN and FIN set.
• L4 Port: Source TCP/UDP Port = Destination TCP/UDP Port.
• ICMP: Limiting the size of ICMP Ping packets.
Auto-DoS Configuration
The Auto-DoS Configuration page lets you automatically enable all the DoS features available
on the switch, except for the L4 Port attack. See the previous section for information about the
types of DoS attacks the switch can monitor and block.
To access the Auto-DoS Configuration page, click System Management Denial of Service
> Auto-DoS Configuration.
Figure 2-5
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To configure the Auto-DoS feature:
1. Select a radio button to enable or disable Auto-DoS:
• Disable. Auto-DoS is disabled (default).
• Enable. Auto-DoS is enabled.
2. Click Apply to send the updated configuration to the switch. Configuration changes occur
immediately.
3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
DoS Configuration
The DoS Configuration page lets you to select which types of DoS attacks for the switch to
monitor and block.
To access the DoS Configuration page, click System Management Denial of Service > DoS
Configuration.
Figure 2-6
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To configure individual DoS settings:
1. Select the types of DoS attacks for the switch to monitor and block and configure any
associated values, as the following list describes.
• Denial of Service SIP=DIP. Enable or disable this option by selecting the appropriate
radio button. Enabling SIP=DIP DoS prevention causes the switch to drop packets that
have a source IP address equal to the destination IP address. The factory default is Disable.
• Denial of Service First Fragment. Enable or disable this option by selecting the
appropriate radio button. Enabling First Fragment DoS prevention causes the switch to
drop packets that have a TCP header smaller than the configured Min TCP Hdr Size. The
factory default is Disable.
• Denial of Service Min TCP Hdr Size. Specify the Min TCP Hdr Size allowed. If First
Fragment DoS prevention is enabled, the switch will drop packets that have a TCP header
smaller than this configured Min TCP Hdr Size. The factory default is 20 bytes.
• Denial of Service TCP Fragment. Enable or disable this option by selecting the
appropriate radio button. Enabling TCP Fragment DoS prevention causes the switch to
drop packets that have an IP fragment offset equal to 1. The factory default is Disable.
• Denial of Service TCP Flag. Enable or disable this option by selecting the appropriate
radio button. Enabling TCP Flag DoS prevention causes the switch to drop packets that
have TCP flag SYN set and TCP source port less than 1024 or TCP control flags set to 0
and TCP sequence number set to 0 or TCP flags FIN, URG, and PSH set and TCP
sequence number set to 0 or both TCP flags SYN and FIN set. The factory default is
Disable.
• Denial of Service L4 Port. Enable or disable this option by selecting the appropriate radio
button. Enabling L4 Port DoS prevention causes the switch to drop packets that have TCP/
UDP source port equal to TCP/UDP destination port. The factory default is Disable.
• Denial of Service ICMP. Enable or disable this option by selecting the appropriate radio
button. Enabling ICMP DoS prevention causes the switch to drop ICMP packets that have
a type set to ECHO_REQ (ping) and a size greater than the configured ICMP packet size.
The factory default is Disable.
• Denial of Service Max ICMP Size. Specify the Max ICMP packet size allowed. If ICMP
DoS prevention is enabled, the switch will drop ICMP ping packets that have a size
greater then this configured Max ICMP packet size. The factory default is Disable.
2. If you change any of the DoS settings, click Apply to apply the changes to the switch.
3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
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DNS
You can use these pages to configure information about DNS servers the network uses and how the
switch operates as a DNS client.
DNS Configuration
Use this page to configure global DNS settings and DNS server information.
To access this page, click System Management DNS DNS Configuration.
Figure 2-7
To configure the global DNS settings
1. Specify whether to enable or disable the administrative status of the DNS Client.
• Enable. Allow the switch to send DNS queries to a DNS server to resolve a DNS domain
name.
• Disable. Prevent the switch from sending DNS queries.
2. Enter the DNS default domain name to include in DNS queries. When the system is
performing a lookup on an unqualified hostname, this field is provided as the domain name
(for example, if default domain name is netgear.com and the user enters test, then test is
changed to test.netgear.com to resolve the name).
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3. To specify the DNS server to which the switch sends DNS queries, enter an IP address in
standard IPv4 dot notation in the DNS Server Address and click Add. The server appears in
the list below. You can specify up to eight DNS servers. The precedence is set in the order
created.
4. To remove a DNS server from the list, select the check box next to the server you want to
remove and click Delete. If no DNS server is specified, the check box is global and will delete
all the DNS servers listed.
5. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
6. Click Apply to send the updated configuration to the switch. Configuration changes take
effect immediately.
Host Configuration
Use this page to manually map host names to IP addresses or to view dynamic DNS mappings.
To access this page, click System Management DNS Host Configuration.
Figure 2-8
To add a static entry to the local DNS table:
1. Specify the static host name to add. Enter up to 158 characters.
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2. Specify the IP address in standard IPv4 dot notation to associate with the hostname.
3. Click Add. The entry appears in the list below.
4. To remove an entry from the static DNS table, select the check box next to the entry and click
Delete.
5. To change the hostname or IP address in an entry, select the check box next to the entry and
enter the new information in the appropriate field, and then click Apply.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
The Dynamic Host Configuration table shows host name-to-IP address entries that the switch has
learned. The following table describes the dynamic host fields:
Table 2-4. Dynamic Host Status Fields
Field Description
Host Lists the host name you assign to the specified IP address.
Total Amount of time since the dynamic entry was first added to the table.
Elapsed Amount of time since the dynamic entry was last updated.
Type The type of the dynamic entry.
Addresses Lists the IP address associated with the host name.
Click Refresh to refresh the table with the most current data from the switch.
Click Clear to delete Dynamic Host Entries. The table will be repopulated with entries as they are
learned.
Green Ethernet Configuration
Use this page to configure Green Ethernet features. Using the Green Ethernet features allows for
power consumption savings.
To access this page, click System Management Green Ethernet Configuration.
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Figure 2-9
To configure the Green Ethernet feature:
1. Enable or disable the Short Cable Mode.
• Enable. The switch performs a cable test on each cable connect to its ports. If the cable is
less than 10m in length, the port is placed in low power mode (nominal power).
• Disable. Full transmit power is provided to all ports, regardless of cable length.
2. Click Apply to send the updated configuration to the switch. Configuration changes take
effect immediately.
PoE (GS110TP Only)
Ports g1–g8 on the GS110TP are IEEE802.3af-compliant ports. Each port is capable of delivering
up to 15.4W of reliable, uninterrupted power to connected PoE-powered devices (PD). The
GS110TP can provide a total of 46W of power to all connected devices. You can configure perport priority settings, timers, and power limits to manage the power supplied to the connected PDs
and to ensure that the GS110TP power budget is used effectively.
From the PoE link under the System tab, you can view and configure PoE settings for the switch
and for ports g1–g8.
From the PoE link, you can access the following pages:
• “PoE Configuration” on page 2-19
• “PoE Port Configuration” on page 2-20
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• “Timer Global Configuration” on page 2-22
• “Timer Schedule Configuration” on page 2-23
PoE Configuration
Use the PoE Configuration page to view global PoE power information and to configure PoE
SNMP trap settings.
To display the PoE Configuration page, click System PoE Basic PoE Configuration.
Note: You can also access the PoE Configuration page by clicking System PoE
Advanced PoE Configuration.
Figure 2-10
To configure PoE trap settings:
1. Select the appropriate radio button to enable or disable SNMP traps.
2. Click Apply to apply the new settings to the system.
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3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
4. Click Refresh to update the screen with the current information.
The PoE Configuration page also provides the following information:
Table 2-5. Global PoE Status Information Fields
Field Description
Power Status Indicates whether the PoE capability is on or off.
Nominal Power Indicates the nominal amount of power the switch can provide to all ports.
Threshold Power Shows the amount of power the system can consume before the system will
not provide power to an additional port.
Consumed Power Shows the total amount of power currently being delivered to all ports.
PoE Port Configuration
Use the PoE Port Configuration page to configure per-port PoE settings.
To display the PoE Port Configuration page, click System PoE Advanced PoE Port
Configuration.
Figure 2-11
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To configure PoE Port settings:
1. To configure settings for a physical port, click PORTS.
2. To configure settings for a Link Aggregation Group (LAG), click LAGS.
3. To configure settings for both physical ports and LAGs, click ALL.
4. Select the check box next to the port or LAG to configure. You can select multiple ports and
LAGs to apply the same setting to the selected interfaces. Select the check box in the heading
row to apply the same settings to all interfaces.
5. Configure or view the settings:
• Admin Mode. Enable or disable the ability of the port to deliver power.
• Priority Level. Determine which ports can deliver power if the total power delivered by
the switch crosses a certain threshold. The switch may not be able to supply power to all
connected devices. Priority is used to determine which ports can supply power. When
ports have the same priority, the lower numbered port is given a higher priority.
• Detection Mode. Select the detection mode to be used on the port. The detection mode
can be one of the following modes:
• Legacy Only: Select this option if only Legacy (capacitive signature) PDs need to be
detected.
• 802.3af 2point Only: Select this option if only IEEE 802.3af (resistive signature) PDs
need to be detected using two collected samples. This is the default mode.
• 802.3af 4point Only: Select this option if only IEEE 802.3af (resistive signature) PDs
need to be detected using four collected samples.
• 802.3af 2point and Legacy: Select this option to use both Legacy and IEEE 802.3af
2point methods to detect PDs.
• 802.3af 4point and Legacy: Select this option to use both Legacy and IEEE 802.3af
2point methods to detect PDs.
• Class. View the class of the PD connected to the port. The class defines the range of power
a PD is drawing from the system. The class is defined as:
• 0: 0.44–12.95W
• 1: 0.44–3.83W
• 2: 3.84–6.48W
• 3: 6.49–12.95W
• 4: Reserved
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• Timer Schedule. Select the timer schedule to use for the port. By default, no timer
schedules are configured. To create a timer schedule, use the Timer Global Configuration
page.
• Output Voltage. Shows the current voltage being delivered to device in Volts.
• Output Current. Shows the current being delivered to device in mA.
• Output Power. Shows the current power being delivered to device in Watts.
• Power Limit Type. Select the type of power limit to use on the port, which is one of the
following:
• Class: Select this option to base the power limit on the detected class value. When this
value is selected, the user-configured value configured in the Power Limit field is
ignored.
• User: Select this option to base the power limit on the value configured in the Power
Limit field.
• Power Limit. Set the maximum amount of power that can be delivered by a port.
• Status. View the operational status of the port PD detection.
• Disabled. Indicates no power is being delivered.
• DeliveringPower. Indicates power is being drawn by a connected device.
• Fault. Indicates a problem with the port.
• Test. Indicates the port is in test mode.
• OtherFault. Indicates the port is idle due to an error condition.
• Searching. Indicates the port is not in one of the above states.
6. Click Apply to apply the new settings to the system.
7. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
8. Click Refresh to update the screen with the current information.
Timer Global Configuration
Use the Timer Global Configuration page to create or remove timers and to control the
administrative status of the feature. Timers control when power can and cannot be delivered to the
port. Use the following general steps to add a timer to a port:
1. Create the timer on the Timer Global Configuration page.
2. Configure the timer settings on the Timer Schedule Configuration page.
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3. Assign the timer to the port or LAG on the PoE Port Configuration page.
Note: The Timer Schedule feature must be enabled for the settings to be applied to the
ports.
To display the Timer Global Configuration page, click System PoE Advanced Timer
Global Configuration.
Figure 2-12
To configure global timer settings:
1. To add a timer, enter a name in the Timer Schedule Name field, and click Add.
2. To remove a timer, select the check box associated with the timer and click Delete.
3. To enable or disable the timer feature, select the appropriate radio button and click Apply.
4. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
Timer Schedule Configuration
Use the Timer Schedule Configuration page to configure when the power to a port is turned off.
For example, you can specify that the power is turned off every night, during the weekend, or
during the same one-week period every year.
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To display the Timer Schedule Configuration page, click System PoE Advanced Timer
Schedule Configuration.
Figure 2-13
To configure timer schedules:
1. Select the name of the schedule created on the Timer Global Configuration page.
2. Specify the time to turn off power. The time range is from 00:00 to 23:59.
3. Specify the day to turn off power by clicking the calendar icon and selecting the date.
4. If required, specify the end date by clicking the calendar icon and selecting the date.
5. If required, use the Recurrence Pattern and Daily Mode fields to customize the power
shutdown schedule.
6. Click Apply to save the settings for the selected timer.
7. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
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SNMP
From SNMP link under the System tab, you can configure SNMP settings for SNMP V1/V2 and
SNMPv3.
From the SNMP link, you can access the following pages:
• “SNMPV1/V2” on page 2-25
• “Trap Flags” on page 2-28
• “SNMP v3 User Configuration” on page 2-29
SNMPV1/V2
The pages under the SNMPV1/V2 menu allow you to configure SNMP community information,
traps, and trap flags.
Community Configuration
To display this page, click System SNMP SNMP V1/V2 Community Configuration.
By default, two SNMP Communities exist:
• Private, with Read/Write privileges and status set to Enable.
• Public, with Read Only privileges and status set to Enable.
These are well-known communities. Use this page to change the defaults or to add other
communities. Only the communities that you define using this page will have access to the switch
using the SNMPv1 and SNMPv2c protocols. Only those communities with read/write level access
can be used to change the configuration using SNMP.
Use this page when you are using the SNMPv1 and SNMPv2c protocol.
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Figure 2-14
To configure SNMP communities:
1. To add a new SNMP community, enter community information in the available fields
described below, and then click Add.
• Management Station IP. Specify the IP address of the management station.Together, the
Management Station IP and the Management Station IP Mask denote a range of IP
addresses from which SNMP clients may use that community to access this device. If
either (Management Station IP or Management Station IP Mask) value is 0.0.0.0, access is
allowed from any IP address. Otherwise, every client’s address is ANDed with the mask,
as is the Management Station IP Address; and, if the values are equal, access is allowed.
For example, if the Management Station IP and Management Station IP Mask parameters
are 192.168.1.0/255.255.255.0, then any client whose address is 192.168.1.0 through
192.168.1.255 (inclusive) will be allowed access. To allow access from only one station,
use a Management Station IP Mask value of 255.255.255.255, and use that machine’s IP
address for Client Address.
• Management Station IP Mask. Specify the subnet mask to associate with the
management station IP address.
• Community String. Specify a community name. A valid entry is a case-sensitive string of
up to 16 characters.
• Access Mode. Specify the access level for this community by selecting Read/Write or
Read Only from the menu.
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• Status. Specify the status of this community by selecting Enable or Disable from the pull
down menu. If you select Enable, the Community Name must be unique among all valid
Community Names or the set request will be rejected. If you select Disable, the
Community Name will become invalid.
2. To modify an existing community, select the check box next to the community, change the
desired fields, and then click Apply. Configuration changes take effect immediately.
3. To delete a community, select the check box next to the community and click Delete.
4. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
Trap Configuration
This page displays an entry for every active Trap Receiver. To access this page, click System
SNMP SNMP V1/V2 Trap Configuration.
Figure 2-15
To configure SNMP trap settings:
1. To add a host that will receive SNMP traps, enter trap configuration information in the
available fields described below, and then click Add.
• Recipients IP. The address in x.x.x.x format to receive SNMP traps from this device.
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• Version. The trap version to be used by the receiver from the menu.
• SNMP v1: Uses SNMP v1 to send traps to the receiver.
• SNMP v2: Uses SNMP v2 to send traps to the receiver.
• Community String. The community string for the SNMP trap packet to be sent to the trap
manager. This may be up to 16 characters and is case sensitive.
• Status. Select the receiver’s status from the menu:
• Enable: Send traps to the receiver.
• Disable: Do not send traps to the receiver.
2. To modify information about an existing SNMP recipient, select the check box next to the
recipient, change the desired fields, and then click Apply. Configuration changes take effect
immediately.
3. To delete a recipient, select the check box next to the recipient and click Delete.
4. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
Trap Flags
The pages in the Trap Manager folder allow you to view and configure information about SNMP
traps the system generates.
Use the Trap Flags page to enable or disable traps the switch can send to an SNMP manager. When
the condition identified by an active trap is encountered by the switch, a trap message is sent to any
enabled SNMP Trap Receivers, and a message is written to the trap log.
To access the Trap Flags page, click System SNMP SNMP V1/V2 Trap Flags.
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Figure 2-16
To configure the trap flags:
1. From the Authentication field, enable or disable activation of authentication failure traps by
selecting the corresponding button. The factory default is Enable.
2. From the Link Up/Down field, enable or disable activation of link status traps by selecting the
corresponding button. The factory default is Enable.
3. From the Spanning Tree field, enable or disable activation of spanning tree traps by selecting
the corresponding button. The factory default is Enable.
4. If you make any changes to this page, click Apply to send the updated configuration to the
switch. Configuration changes take effect immediately.
5. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
SNMP v3 User Configuration
This is the configuration for SNMP v3.
To access this page, click System SNMP SNMP V3 User Configuration.
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Figure 2-17
The SNMPv3 Access Mode is a read-only field that shows the access privileges for the user account.
The admin account always has Read/Write access, and all other accounts have Read Only access.
To configure SNMPv3 settings for the user account:
1. In the Authentication Protocol field, specify the SNMPv3 Authentication Protocol setting for
the selected user account. The valid Authentication Protocols are None, MD5, or SHA. If you
select:
• None: The user will be unable to access the SNMP data from an SNMP browser.
• MD5 or SHA: The user login password will be used as SNMPv3 authentication password,
and you must therefore specify a password. The password must be eight characters in
length.
2. In the Encryption Protocol field, choose whether to encrypt SNMPv3 packets transmitted by
the switch.
• None. Do not encrypt the contents of SNMPv3 packets transmitted from the switch.
• DES. Encrypt SNMPv3 packets using the DES encryption protocol.
3. If you selected DES in the Encryption Protocol field, enter the SNMPv3 Encryption Key here.
Otherwise, this field is ignored. Valid keys are 0 to 15 characters long.
4. Click Apply to send the updated configuration to the switch. Configuration changes take
effect immediately.
5. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
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LLDP
The IEEE 802.1AB-defined standard, Link Layer Discovery Protocol (LLDP), allows stations on
an 802 LAN to advertise major capabilities and physical descriptions. This information is viewed
by a network manager to identify system topology and detect bad configurations on the LAN.
From the LLDP link, you can access the following pages:
• “LLDP Configuration” on page 2-31
• “LLDP Port Settings” on page 2-33
• “LLDP-MED Network Policy” on page 2-34
• “LLDP-MED Port Settings” on page 2-36
• “Local Information” on page 2-37
• “Neighbors Information” on page 2-40
LLDP is a one-way protocol; there are no request/response sequences. Information is advertised
by stations implementing the transmit function, and is received and processed by stations
implementing the receive function. The transmit and receive functions can be enabled/disabled
separately per port. By default, both transmit and receive are disabled on all ports. The application
is responsible for starting each transmit and receive state machine appropriately, based on the
configured status and operational state of the port.
The Link Layer Discovery Protocol-Media Endpoint Discovery (LLDP-MED) is an enhancement
to LLDP with the following features:
• Auto-discovery of LAN policies (such as VLAN, Layer 2 Priority, and DiffServ settings),
enabling plug and play networking.
• Device location discovery for creation of location databases.
• Extended and automated power management of Power over Ethernet endpoints.
• Inventory management, enabling network administrators to track their network devices and
determine their characteristics (manufacturer, software and hardware versions, serial/asset
number).
LLDP Configuration
Use the LLDP Configuration page to specify LLDP and LLDP-MED parameters that are applied
to the switch.
To display the LLDP Configuration page, click System LLDP Basic LLDP Configuration.
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Note: You can also access the LLDP Configuration page by clicking System LLDP
Advanced LLDP Configuration.
Figure 2-18
To configure global LLDP settings:
1. Configure the following LLDP properties.
• TLV Advertised Interval. Specify the interval at which frames are transmitted. The
default is 30 seconds, and the valid range is 1–32768 seconds.
• Hold Multiplier. Specify multiplier on the transmit interval to assign to Time-to-Live
(TTL). The default is 4, and the range is 2–10.
• Reinitializing Delay. Specify the delay before a reinitialization. The default is 2 seconds,
and the range is 1–10 seconds.
• Transmit Delay. Specify the interval for the transmission of notifications. The default is 5
seconds, and the range is 5–3600 seconds.
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2. To change the LLDP-MED properties in the Fast Start Duration field, specify the number of
LLDP packets sent when the LLDP-MED Fast Start mechanism is initialized, which occurs
when a new endpoint device links with the LLDP-MED network connectivity device. The
default value is 3, and the range is from 1–10.
3. Click Apply to apply the new settings to the system.
4. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
5. Click Refresh to update the screen with the current information.
LLDP Port Settings
Use the LLDP Port Settings page to specify LLDP parameters that are applied to a specific
interface.
To display the LLDP Port Settings page, click SystemLLDP Advanced LLDPPort
Settings.
Figure 2-19
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To configure LLDP port settings:
1. Change the LLDP port settings described below:
• Interface. Specifies the port to be affected by these parameters.
• Admin Status. Select the status for transmitting and receiving LLDP packets:
• Tx Only: Enable only transmitting LLDP PDUs on the selected ports.
• Rx Only: Enable only receiving LLDP PDUs on the selected ports.
• Tx and Rx: Enable both transmitting and receiving LLDP PDUs on the selected ports.
• Disabled: Do not transmit or receive LLDP PDUs on the selected ports.
• Management IP Address. Choose whether to advertise the management IP address from
the interface. The possible field values are:
• Stop Advertise: Do not advertise the management IP address from the interface.
• Auto Advertise: Advertise the current IP address of the device as the management IP
address.
• Notification. When notifications are enabled, LLDP interacts with the Trap Manager to
notify subscribers of remote data change statistics. The default is Disabled.
• Optional TLV(s). Enable or disable the transmission of optional type-length value (TLV)
information from the interface. The TLV information includes the system name, system
description, system capabilities, and port description. To configure the System Name, see
“Management” on page 2-1. To configure the Port Description, see “Ports” on page 3-1.
2. If you make any changes to the page, click Apply to apply the new settings to the system.
3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
LLDP-MED Network Policy
This page displays information about the LLPD-MED network policy TLV transmitted in the
LLDP frames on the selected local interface.
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To display this page, click System LLDP Advanced LLDP-MED Network Policy.
Figure 2-20
From the Interface menu, select the interface with the information to view. The following table
describes the LLDP-MED network policy information that displays on the screen.
Table 2-6. LLPD-MED Network Policy Information Fields
Field Description
Network Policy Number Specifies the policy number.
Application Specifies the media application type associated with the policy, which can be
one of the following:
• Unknown
• Voice
• Guest Voice
• Guest Voice Signaling
• Softphone Voice
• Video Conferencing
• Streaming Video
• Video Signaling
A port can receive multiple application types. The application information is
displayed only if a network policy TLV has been transmitted from the port.
VLAN ID Specifies the VLAN ID associated with the policy.
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Table 2-6. LLPD-MED Network Policy Information Fields (continued)
Field Description
VLAN Type Specifies whether the VLAN associated with the policy is tagged or
untagged.
User Priority Specifies the priority associated with the policy.
DSCP Specifies the DSCP associated with a particular policy type.
Click Refresh to refresh the page with the most current data from the switch.
LLDP-MED Port Settings
Use this page to enable LLDP-MED mode on an interface and configure its properties.
To display this page, click System LLDP Advanced LLDP-MED Port Settings.
Figure 2-21
To configure LLDP-MED settings for a port:
1. From the Port field, select the port to configure.
2. From the LLDP-MED Status field, enable or disable the LLDP-MED mode for the selected
interface.
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3. From the Notification field, specify whether the port should send a topology change
notification if a device is connected or removed.
4. From the Transmit Optional TLVs field, specify whether the port should transmit optional type
length values (TLVs) in the LLDP PDU frames. If enabled, the following LLDP-MED TLVs
are transmitted:
• MED Capabilities
• Network Policy
• Location Identification
• Extended Power via MDI: PSE
• Extended Power via MDI: PD
• Inventory
5. Click Apply to send the updated configuration to the switch. These changes occur
immediately and the configuration will be saved.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
Local Information
Use the LLDP Local Information page to view the data that each port advertises through LLDP.
To display the LLDP Local Device Information page, click SystemAdvanced LLDPLocal
Information.
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Figure 2-22
The following table describes the LLDP local information that displays for each port.
Table 2-7. LLDP Local Information Fields
Field Description
Interface Select the interface with the information to display.
Port ID Subtype Identifies the type of data displayed in the Port ID field.
Port ID Identifies the physical address of the port.
Port Description Identifies the user-defined description of the port. To configure the Port
Description, see “Ports” on page 3-1.
Advertisement Displays the advertisement status of the port.
Click Refresh to refresh the page with the most current data from the switch.
To view additional details about a port, click the name of the port in the Interface column of the
Port Information table.
A popup window displays information for the selected port.
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Figure 2-23
The following table describes the detailed local information that displays for the selected port.
Table 2-8. Local Port Information
Field Description
Managed Address
Address SubType Displays the type of address the management interface uses, such as an IPv4
address.
Address Displays the address used to manage the device.
Interface SubType Displays the port subtype.
Interface Number Displays the number that identifies the port.
MAC/PHY Details
Auto-Negotiation
Supported
Auto-Negotiation Enabled Displays the port speed auto-negotiation support status. The possible values
Configuring System Information 2-39
Specifies whether the interface supports port-speed auto-negotiation. The
possible values are True or False.
are True (enabled) or False (disabled).
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Table 2-8. Local Port Information (continued)
Field Description
Auto Negotiation
Advertised Capabilities
Operational MAU Type Displays the Medium Attachment Unit (MAU) type. The MAU performs
MED Details
Capabilities Supported Displays the MED capabilities enabled on the port.
Current Capabilities Displays the TLVs advertised by the port.
Device Class Network Connectivity indicates the device is a network connectivity device.
Network Policies
Application Type Specifies the media application type associated with the policy.
VLAN ID Specifies the VLAN ID associated with the policy.
VLAN Type Specifies whether the VLAN associated with the policy is tagged or untagged.
User Priority Specifies the priority associated with the policy.
DSCP Specifies the DSCP associated with a particular policy type.
Displays the port speed auto-negotiation capabilities such as 1000BASE-T
half-duplex mode or 100BASE-TX full-duplex mode.
physical layer functions, including digital data conversion from the Ethernet
interface collision detection and bit injection into the network.
Neighbors Information
Use the LLDP Neighbors Information page to view the data that a specified interface has received
from other LLDP-enabled systems.
To display the LLDP Neighbors Information page, click SystemLLDP Advanced
Neighbors Information.
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Figure 2-24
The following table describes the information that displays for all LLDP neighbors that have been
discovered.
Table 2-9. LLDP Neighbors Information Fields
Field Description
MSAP Entry Displays the Media Service Access Point (MSAP) entry number for the
remote device.
Local Port Displays the interface on the local system that received LLDP information
from a remote system.
Chassis ID Subtype Identifies the type of data displayed in the Chassis ID field on the remote
system.
Chassis ID Identifies the remote 802 LAN device's chassis.
Port ID Subtype Identifies the type of data displayed in the remote system’s Port ID field.
Port ID Identifies the physical address of the port on the remote system from which
the data was sent.
System Name Identifies the system name associated with the remote device. If the field is
blank, the name might not be configured on the remote system.
Click Refresh to update the information on the screen with the most current data.
To view additional information about the remote device, click the link in the MSAP Entry field.
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A popup window displays information for the selected port.
Figure 2-25
Table 2-10. LLPD-MED Local Device Information Fields
Field Description
Port Details
Local Port Displays the interface on the local system that received LLDP information
from a remote system.
MSAP Entry Displays the Media Service Access Point (MSAP) entry number for the
remote device.
Basic Details
Chassis ID Subtype Identifies the type of data displayed in the Chassis ID field on the remote
system.
Chassis ID Identifies the remote 802 LAN device's chassis.
Port ID Subtype Identifies the type of data displayed in the remote system’s Port ID field.
Port ID Identifies the physical address of the port on the remote system from which
the data was sent.
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Table 2-10. LLPD-MED Local Device Information Fields (continued)
Field Description
Port Description Identifies the user-defined description of the port.
System Name Identifies the system name associated with the remote device.
System Description Specifies the description of the selected port associated with the remote
system.
System Capabilities Specifies the system capabilities of the remote system.
Managed Addresses
Address SubType Specifies the type of the management address.
Address Specifies the advertised management address of the remote system.
Interface SubType Specifies the port subtype.
Interface Number Identifies the port on the remote device that sent the information.
MAC/PHY Details
Auto-Negotiation
Supported
Auto-Negotiation Enabled Displays the port speed auto-negotiation support status. The possible values
Auto Negotiation
Advertised Capabilities
Operational MAU Type Displays the Medium Attachment Unit (MAU) type. The MAU performs
MED Details
Capabilities Supported Specifies the supported capabilities that were received in MED TLV from the
Current Capabilities Specifies the advertised capabilities that were received in MED TLV from the
Device Class Displays the LLDP-MED endpoint device class. The possible device classes
Specifies whether the remote device supports port-speed auto-negotiation.
The possible values are True or False
are True or False
Displays the port speed auto-negotiation capabilities.
physical layer functions, including digital data conversion from the Ethernet
interface collision detection and bit injection into the network.
device.
device.
are:
• Endpoint Class 1 Indicates a generic endpoint class, offering basic LLDP
services.
• Endpoint Class 2 Indicates a media endpoint class, offering media
streaming capabilities as well as all Class 1 features.
• Endpoint Class 3 Indicates a communications device class, offering all
Class 1 and Class 2 features plus location, 911, Layer 2 switch support and
device information management capabilities.
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Table 2-10. LLPD-MED Local Device Information Fields (continued)
Field Description
PoE Device Type Displays the port PoE type. For example, Powered.
PoE Power Source Displays the port's power source.
PoE Power Priority Displays the port's power priority.
PoE Power Value Displays the port's power value.
Hardware Revision Displays the hardware version advertised by the remote device.
Firmware Revision Displays the firmware version advertised by the remote device.
Software Revision Displays the software version advertised by the remote device.
Serial Number Displays the serial number advertised by the remote device.
Model Name Displays the model name advertised by the remote device.
Asset ID Displays the asset ID advertised by the remote device.
Location Information
Civic Displays the physical location, such as the street address, the remote device
has advertised in the location TLV. For example, 123 45th St. E. The field
value length range is 6–160 characters.
Coordinates Displays the location map coordinates the remote device has advertised in
the location TLV, including latitude, longitude and altitude.
ECS ELIN Displays the Emergency Call Service (ECS) Emergency Location
Identification Number (ELIN) the remote device has advertised in the location
TLV. The field range is 10–25.
Unknown Displays unknown location information for the remote device.
Network Policies
Application Type Specifies the media application type associated with the policy advertised by
the remote device.
VLAN ID Specifies the VLAN ID associated with the policy.
VLAN Type Specifies whether the VLAN associated with the policy is tagged or untagged.
User Priority Specifies the priority associated with the policy.
DSCP Specifies the DSCP associated with a particular policy type.
LLDP Unknown TLVs
Type Displays the unknown TLV type field.
Value Displays the unknown TLV value field.
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Services — DHCP Filtering
DHCP Filtering is a useful feature that can be employed as a security measure against
unauthorized DHCP servers. A known attack is when an unauthorized DHCP server responds to a
client that is requesting an IP address. The server configures the gateway for the client to be equal
to the IP address of the server. At that point, the client sends all of its IP traffic destined to other
networks to the unauthorized machine. This gives the attacker the possibility of snooping traffic
for passwords or employing a man-in-the-middle attack. DHCP Filtering works by allowing the
administrator to configure each port as either a trusted port or an untrusted port. The port that has
the authorized DHCP server should be configured as a trusted port. Any DHCP responses received
on a trusted port are forwarded. All other ports should be configured as untrusted. Any DHCP (or
BootP) responses received are discarded.
From the Services link, you can access the following pages:
• “DHCP Filtering Configuration” on page 2-45
• “Interface Configuration” on page 2-46
DHCP Filtering Configuration
Use the DHCP Filtering Configuration page to enable or disable the DHCP Filtering feature on the
switch.
To access the DHCP Filter Configuration page, click System Services DHCP Filtering
Configuration.
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Figure 2-26
To configure global DHCP filtering settings:
1. In the Admin Mode field, select Enable or Disable to turn the DHCP Filtering feature on or
off.
2. Click Apply to apply the change to the system. Configuration changes take effect
immediately.
3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
Interface Configuration
Use the DHCP Filtering Interface Configuration page to view and configure each port as a trusted
or untrusted port. Any DHCP responses received on a trusted port are forwarded. If a port is
configured as untrusted, any DHCP (or BootP) responses received on that port are discarded.
To access the DHCP Filtering Interface Configuration page, click System Services DHCP
Filtering Interface Configuration.
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Figure 2-27
To configure DHCP filtering settings for an interface:
1. To configure DHCP filtering settings for a physical port, click PORTS.
2. To configure DHCP filtering settings for a Link Aggregation Group (LAG), click LAGS.
3. To configure DHCP filtering settings for both physical ports and LAGs, click ALL.
4. Select the check box next to the port or LAG to configure. You can select multiple ports and
LAGs to apply the same setting to the selected interfaces. Select the check box in the heading
row to apply the same settings to all interfaces.
5. Choose the trust mode for the selected port(s) or LAG(s).
• Enable: Any DHCP responses received on this port are forwarded.
• Disable: Any DHCP (or BootP) responses received on this port are discarded.
6. Click Apply to apply the change to the system. Configuration changes take effect
immediately.
7. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
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Chapter 3
Configuring Switching Information
Use the features in the Switching tab to define Layer 2 features. The Switching tab contains links
to the following features:
• “Ports” on page 3-1
• “Link Aggregation Groups” on page 3-5
• “VLANs” on page 3-10
• “Voice VLAN” on page 3-16
• “Auto-VoIP” on page 3-20
• “Spanning Tree Protocol” on page 3-22
• “Multicast” on page 3-38
• “Forwarding Database” on page 3-53
Ports
The pages on the Ports tab allow you to view and monitor the physical port information for the
ports available on the switch. From the Ports link, you can access the following pages:
• “Port Configuration” on page 3-1
• “Flow Control” on page 3-4
Port Configuration
Use the Port Configuration page to configure the physical interfaces on the switch.
To access the Port Configuration page, click Switching Ports Port Configuration.
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Figure 3-1
To configure port settings:
1. To configure settings for a physical port, click PORTS.
2. To configure settings for a Link Aggregation Group (LAG), click LAGS.
3. To configure settings for both physical ports and LAGs, click ALL.
4. Select the check box next to the port or LAG to configure. You can select multiple ports and
LAGs to apply the same setting to the selected interfaces. Select the check box in the heading
row to apply the same settings to all interfaces.
5. Configure or view the settings:
• Description. Enter the description string to be attached to a port. The string can be up to
64 characters in length.
• Port Type. For most ports this field is blank. Otherwise, the possible values are:
• MON: Indicates that the port is a monitoring port. For additional information about
port monitoring see “Port Mirroring” on page 6-24.
• LAG: Indicates that the port is a member of a Link Aggregation trunk. For more
information see “Link Aggregation Groups” on page 3-5.
• Admin Mode. Use the menu to select the port control administration state, which can be
one of the following:
• Enable: The port can participate in the network (default).
• Disable: The port is administratively down and does not participate in the network.
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• Port Speed. Use the menu to select the port’s speed and duplex mode. If you select Auto,
the duplex mode and speed will be set by the auto-negotiation process. The port’s
maximum capability (full duplex and 1000 Mbps) will be advertised. Otherwise, your
selection will determine the port’s duplex mode and transmission rate. The factory default
is Auto.
• Sleep Mode. Use the menu to select the port’s Green Ethernet mode, which can be one of
the following:
• Enable: Specifies that when the port link is down, the port automatically goes down
for a short amount of time and wakes up to check link pulses. When the port does not
have a link partner, the sleep mode reduces power consumption.
• Disable: The port provides full power to the port even if there is no link partner.
• Short Cable Mode. Use the menu to select the port’s Green Ethernet mode, which can be
one of the following:
• Enable: Specifies that cable test is performed when the port link is up at 1 Gbps and if
the cable is less than 10m, PHYs are placed in low power mode (nominal power).
• Disable: The port does not participate in Green Ethernet mode.
• Physical Status. Indicates the physical port’s speed and duplex mode
• Link Status. Indicates whether the Link is up or down.
• Link Trap. This object determines whether or not to send a trap when link status changes.
The factory default is Enable.
• Enable: Specifies that the system sends a trap when the link status changes.
• Disable: Specifies that the system does not send a trap when the link status changes.
• Maximum Frame Size. Specify the maximum Ethernet frame size the interface supports
or is configured to support. The frame size includes the Ethernet header, CRC, and
payload. (1518–9216). The default maximum frame size is 1518.
• MAC Address. Displays the physical address of the specified interface.
• PortList Bit Offset. Displays the bit offset value which corresponds to the port when the
MIB object type PortList is used to manage in SNMP.
• ifIndex. The ifIndex of the interface table entry associated with this port. If the interface
field is set to All, this field is blank.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
7. If you make any changes to the page, click Apply to apply the changes to the system.
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Flow Control
IEEE 802.3x flow control works by pausing a port when the port becomes oversubscribed and
dropping all traffic for small bursts of time during the congestion condition. This can lead to highpriority and/or network control traffic loss. When IEEE 802.3x flow control is enabled, lower
speed switches can communicate with higher speed switches by requesting that the higher speed
switch refrains from sending packets. Transmissions are temporarily halted to prevent buffer
overflows.
To display the Flow Control page, click Switching Ports, and then click the Flow Control link.
Figure 3-2
To configure global flow control settings:
1. From the Global Flow Control (IEEE 802.3x) Mode field, enable or disable IEEE 802.3x flow
control on the system. The factory default is Disable.
• Enable. The switch sends pause packets if the port buffers become full.
• Disable. The switch does not send pause packets if the port buffers become full.
2. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
3. If you change the mode, click Apply to apply the changes to the system.
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Link Aggregation Groups
Link aggregation groups (LAGs), which are also known as port-channels, allow you to combine
multiple full-duplex Ethernet links into a single logical link. Network devices treat the aggregation
as if it were a single link, which increases fault tolerance and provides load sharing. You assign the
LAG VLAN membership after you create a LAG. The LAG by default becomes a member of the
management VLAN.
A LAG interface can be either static or dynamic, but not both. All members of a LAG must
participate in the same protocols. A static port-channel interface does not require a partner system
to be able to aggregate its member ports.
Static LAGs are supported. When a port is added to a LAG as a static member, it neither transmits
nor receives LAGPDUs. The GS108T and GS110TP Smart Switches each support four LAGs.
From the LAGs link, you can access the following pages:
• “LAG Configuration” on page 3-5
• “LAG Membership” on page 3-7
• “LACP Configuration” on page 3-8
• “LACP Port Configuration” on page 3-9
LAG Configuration
Use the LAG (Port Channel) Configuration page to group one or more full-duplex Ethernet links
to be aggregated together to form a link aggregation group, which is also known as a port-channel.
The switch treats the LAG as if it were a single link.
To access the LAG Configuration page, click Switching LAG Basic LAG Configuration.
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Figure 3-3
To configure LAG settings:
1. Select the check box next to the LAG to configure. You can select multiple LAGs to apply the
same setting to the selected interfaces. Select the check box in the heading row to apply the
same settings to all interfaces.
2. Configure or view the following settings:
• LAG Name. Specify the name you want assigned to the LAG. You may enter any string of
up to 15 alphanumeric characters. A valid name has to be specified in order to create the
LAG
• Description. Specify the Description string to be attached to a LAG. It can be up to 64
characters in length.
• LAG ID. Displays the number assigned to the LAG. This field is read-only.
• Link Trap. Specify whether you want to have a trap sent when link status changes. The
factory default is Disable, which will cause the trap to be sent.
• Admin Mode. Select Enable or Disable from the menu. When the LAG (port channel) is
disabled, no traffic will flow and LAGPDUs will be dropped, but the links that form the
LAG (port channel) will not be released. The factory default is Enable.
• STP Mode. Select the Spanning Tree Protocol Administrative Mode associated with the
LAG.
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• LAG Type. Select Static or LACP. When the LAG is static, it does not transmit or process
received LAGPDUs, for example the member ports do not transmit LAGPDUs and all the
LAGPDUs it may receive are dropped. The default is Static.
• Active Ports. A listing of the ports that are actively participating members of this Port
Channel. A maximum of 4 ports can be assigned to a port channel.
• LAG State. Indicates whether the link is Up or Down.
3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
4. If you make any changes to this page, click Apply to send the updated configuration to the
switch. Configuration changes take effect immediately.
LAG Membership
Use the LAG Membership page to select two or more full-duplex Ethernet links to be aggregated
together to form a link aggregation group (LAG), which is also known as a port-channel. The
switch can treat the port-channel as if it were a single link.
To access the LAG Membership page, click Switching LAG Basic LAG Membership.
Figure 3-4
To create a LAG:
1. From the LAG ID field, select the LAG to configure.
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2. In the LAG Name field, enter the name you want assigned to the LAG. You may enter any
string of up to 15 alphanumeric characters. A valid name has to be specified to create the LAG.
3. Click the orange bar to display the ports.
4. Click the box below each port to include in the LAG. Figure 3-5 shows an example of how to
configure LAG1 with ports g7 and g8 as members.
Figure 3-5
5. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
6. If you make any changes to this page, click Apply to send the updated configuration to the
switch. Configuration changes take effect immediately.
7. To view the ports that are members of the selected LAG, click Current Members.
LACP Configuration
To display the LACP Configuration page, click Switching LAG Advanced LACP
Configuration.
Figure 3-6
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To configure LACP:
1. From the LACP System Priority field, specify the device’s link aggregation priority relative to
the devices at the other ends of the links on which link aggregation is enabled. A higher value
indicates a lower priority. You can change the value of the parameter globally by specifying a
priority from 0–65535. The default value is 32768.
2. Click Refresh to reload the page and display the most current information.
3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
4. If you make any changes to this page, click Apply to send the updated configuration to the
switch. Configuration changes take effect immediately.
LACP Port Configuration
To display the LACP Port Configuration page, click Switching LAG Advanced LACP
Port Configuration.
Figure 3-7
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To configure LACP port priority settings:
1. Select the check box next to the port to configure. You can select multiple ports to apply the
same setting to all selected ports.
Note: You cannot select ports that are not participating in a LAG.
2. Configure the LACP Priority value for the selected port. The field range is 0–255. The
default value is 128.
3. Configure the administrative LACP Timeout value.
• Long. Specifies a long timeout value.
• Short. Specifies a short timeout value.
4. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
5. If you make any changes to this page, click Apply to send the updated configuration to the
switch. Configuration changes take effect immediately.
VLANs
Adding Virtual LAN (VLAN) support to a Layer 2 switch offers some of the benefits of both
bridging and routing. Like a bridge, a VLAN switch forwards traffic based on the Layer 2 header,
which is fast, and like a router, it partitions the network into logical segments, which provides
better administration, security and management of multicast traffic.
By default, all ports on the switch are in the same broadcast domain. VLANs electronically
separate ports on the same switch into separate broadcast domains so that broadcast packets are not
sent to all the ports on a single switch. When you use a VLAN, users can be grouped by logical
function instead of physical location.
Each VLAN in a network has an associated VLAN ID, which appears in the IEEE 802.1Q tag in
the Layer 2 header of packets transmitted on a VLAN. An end station may omit the tag, or the
VLAN portion of the tag, in which case the first switch port to receive the packet may either reject
it or insert a tag using its default VLAN ID. A given port may handle traffic for more than one
VLAN, but it can only support one default VLAN ID.
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From the VLAN link, you can access the following pages:
• “VLAN Configuration” on page 3-11
• “VLAN Membership Configuration” on page 3-12
• “Port VLAN ID Configuration” on page 3-14
VLAN Configuration
Use the VLAN Configuration page to define VLAN groups stored in the VLAN membership
table. The GS108T and GS110TP each support up to 64 VLANs. Three VLANs are created by
default:
• VLAN 1 is the default VLAN of which all ports are members.
• VLAN 2 is for voice traffic.
• VLAN 3 is for Auto-Video traffic.
To display the VLAN Configuration page, lick Switching VLAN Basic VLAN
Configuration.
Figure 3-8
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To configure VLANs:
1. To add a VLAN, configure the VLAN ID, name, and type, and then click Add.
• VLAN ID. Specify the VLAN Identifier for the new VLAN. (You can only enter data in
this field when you are creating a new VLAN.) The range of the VLAN ID is 1–4093.
• VLAN Name. Use this optional field to specify a name for the VLAN. It can be up to 32
alphanumeric characters long, including blanks. The default is blank. VLAN ID 1 is
always named Default.
• VLAN Type. This field identifies the type of the VLAN you are configuring. You cannot
change the type of the default VLAN (VLAN ID = 1) because the type is always Default.
When you create a VLAN on this page, its type will always be Static.
2. To delete a VLAN, select the check box next to the VLAN ID and click Delete. You cannot
delete the default VLAN.
3. To modify settings for a VLAN, select the check box next to the VLAN ID, change the desired
information, and then click Apply. Configuration changes occur immediately.
4. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
5. To reset the VLAN settings on the switch to the factory defaults, select the Reset
Configuration check box, and click OK in the popup message to confirm. If the Management
VLAN is set to a non-default VLAN (VLAN 1), it is automatically set to 1 after a Reset
Configuration.
VLAN Membership Configuration
Use this page to configure VLAN Port Membership for a particular VLAN. You can select the
Group operation through this page.
To display the VLAN Membership Configuration page, click Switching VLAN Advanced
VLAN Membership.
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Figure 3-9
To configure VLAN membership:
1. From the VLAN ID field, select the VLAN to which you want to add ports.
2. Click the orange bar below the VLAN Type field to display the physical ports on the switch.
3. Click the lower orange bar to display the LAGs on the switch.
4. To select the port(s) or LAG(s) to add to the VLAN, click the square below each port or LAG.
You can add each interface as a tagged (T) or untagged (U) VLAN member.
• Tagged: Frames transmitted from this port are tagged with the port VLAN ID.
• Untagged: Frames transmitted from this port are untagged. Each port can be an untagged
member of only one VLAN. By default, all ports are an untagged member of VLAN 1.
In the following figure, ports g6, g7, and g8 are being added as tagged members to VLAN 2.
Figure 3-10
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5. Use the Group Operations field to select all the ports and configure them. Possible values
are:
• Untag All: Select all the ports on which all frames transmitted from this VLAN will be
untagged. All the ports will be included in the VLAN.
• Tag All: Select the ports on which all frames transmitted for this VLAN will be tagged.
All the ports will be included in the VLAN.
• Remove All: This selection has the effect of excluding all ports from the selected VLAN.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
7. If you make any changes to this page, click Apply to send the updated configuration to the
switch. Configuration changes take place immediately.
Port VLAN ID Configuration
The Port PVID Configuration screen lets you assign a port VLAN ID (PVID) to an interface.
There are certain requirements for a PVID:
• All ports must have a defined PVID.
• If no other value is specified, the default VLAN PVID is used.
• If you want to change the port’s default PVID, you must first create a VLAN that includes the
port as a member.
• Use the Port VLAN ID (PVID) Configuration page to configure a virtual LAN on a port.
To access the Port PVID Configuration page, click Switching VLAN Advanced Port PVID
Configuration.
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Figure 3-11
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To configure PVID information:
1. To configure PVID settings for a physical port, click PORTS.
2. To configure PVID settings for a Link Aggregation Group (LAG), click LAGS.
3. To configure PVID settings for both physical ports and LAGs, click ALL.
4. Select the check box next to the interfaces to configure. You can select multiple interfaces to
apply the same setting to the selected interfaces. Select the check box in the heading row to
apply the same settings to all interfaces.
5. Configure the PVID to assign to untagged or priority tagged frames received on this port.
6. Specify how you want the port to handle untagged and priority tagged frames. Whichever you
select, VLAN tagged frames will be forwarded in accordance with the IEEE 802.1Q VLAN
standard. The factory default is Admit All.
• VLAN Only: The port will discard any untagged or priority tagged frames it receives.
• Admit All: Untagged and priority tagged frames received on the port will be accepted and
assigned the value of the Port VLAN ID for this port.
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GS108T and GS110TP Smart Switch Software Administration Manual
7. Specify how you want the port to handle tagged frames:
• Enable: A tagged frame will be discarded if this port is not a member of the VLAN
identified by the VLAN ID in the tag. In an untagged frame, the VLAN is the Port VLAN
ID specified for the port that received this frame.
• Disable: All frames are forwarded in accordance with the IEEE 802.1Q VLAN standard.
The factory default is Disable.
8. Specify the default 802.1p priority assigned to untagged packets arriving at the port. Possible
values are 0–7.
9. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the
latest value of the switch.
10. If you make any changes to this page, click Apply to send the updated configuration to the
switch. Configuration changes take place immediately.
Voice VLAN
Configure the Voice VLAN settings for ports that carry traffic from IP phones. The Voice VLAN
feature can help ensure that the sound quality of an IP phone is safeguarded from deteriorating
when the data traffic on the port is high.
From the VLAN link, you can access the following pages:
• “Voice VLAN Properties” on page 3-16
• “Voice VLAN Port Setting” on page 3-18
• “Voice VLAN OUI” on page 3-19
Voice VLAN Properties
To display the Voice VLAN Properties page, click Switching Voice VLAN Basic
Properties.
3-16 Configuring Switching Information
v1.0, April 2010
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