As our products undergo continuous development the specifications are subject to change without prior notice
V1.0
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M
ANAGEMENT
G
UIDE
DG-FS4526E ENHANCED FAST ETHERNET SWITCH
Layer 2 Switch
with 24 10/100BASE-TX (RJ-45) Ports,
and 2 Gigabit Combination Ports (RJ-45/SFP)
DG-FS4526E
E032011/ST-R01
149100000142A
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ABOUT THIS GUIDE
PURPOSE This guide gives specific information on how to operate and use the
management functions of the switch.
AUDIENCE The guide is intended for use by network administrators who are
responsible for operating and maintaining network equipment;
consequently, it assumes a basic working knowledge of general switch
functions, the Internet Protocol (IP), and Simple Network Management
Protocol (SNMP).
CONVENTIONS The following conventions are used throughout this guide to show
information:
N
OTE
:
Emphasizes important information or calls your attention to related
features or instructions.
C
AUTION
damage the system or equipment.
W
ARNING
:
Alerts you to a potential hazard that could cause loss of data, or
:
Alerts you to a potential hazard that could cause personal injury.
RELATED PUBLICATIONS The following publication details the hardware features of the switch,
including the physical and performance-related characteristics, and how to
install the switch:
The Installation Guide
Also, as part of the switch’s software, there is an online web-based help
that describes all management related features.
REVISION HISTORY This section summarizes the changes in each revision of this guide.
APRIL 2012 REVISION
This is the first version of this guide.
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A
BOUT THIS GUIDE
– 4 –
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CONTENTS
ABOUT THIS GUIDE 3
C
ONTENTS 5
IGURES 35
F
T
ABLES 45
SECTION IGETTING STARTED 51
1INTRODUCTION 53
Key Features 53
Description of Software Features 54
System Defaults 59
2INITIAL SWITCH CONFIGURATION 63
Connecting to the Switch 63
Configuration Options 63
Required Connections 64
Remote Connections 65
Basic Configuration 66
Console Connection 66
Setting Passwords 66
Setting an IP Address 67
Downloading a Configuration File Referenced by a DHCP Server 73
Enabling SNMP Management Access 75
Managing System Files 77
Saving or Restoring Configuration Settings 78
SECTION IIWEB CONFIGURATION 81
3USINGTHE WEB INTERFACE 83
Connecting to the Web Interface 83
Navigating the Web Browser Interface 84
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C
ONTENTS
Home Page 84
Configuration Options 85
Panel Display 85
Main Menu 86
4BASIC MANAGEMENT TASKS 101
Displaying System Information 101
Displaying Hardware/Software Versions 102
Configuring Support for Jumbo Frames 104
Displaying Bridge Extension Capabilities 105
Managing System Files 106
Copying Files via FTP/TFTP or HTTP 106
Saving the Running Configuration to a Local File 108
Setting The Start-Up File 109
Showing System Files 110
Automatic Operation Code Upgrade 111
Setting the System Clock 115
Setting the Time Manually 115
Setting the SNTP Polling Interval 116
Specifying SNTP Time Servers 117
Setting the Time Zone 118
Console Port Settings 119
Telnet Settings 121
Displaying CPU Utilization 122
Displaying Memory Utilization 123
Resetting the System 124
5INTERFACE CONFIGURATION 129
Port Configuration 129
Configuring by Port List 129
Configuring by Port Range 132
Displaying Connection Status 133
Configuring Local Port Mirroring 134
Configuring Remote Port Mirroring 136
Showing Port or Trunk Statistics 140
Performing Cable Diagnostics 144
Trunk Configuration 146
Configuring a Static Trunk 147
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Configuring a Dynamic Trunk 149
Displaying LACP Port Counters 154
Displaying LACP Settings and Status for the Local Side 155
Displaying LACP Settings and Status for the Remote Side 157
Saving Power 158
Traffic Segmentation 160
Enabling Traffic Segmentation 160
Configuring Uplink and Downlink Ports 161
VLAN Trunking 164
6 VLAN CONFIGURATION 167
IEEE 802.1Q VLANs 167
Configuring VLAN Groups 170
Adding Static Members to VLANs 172
Configuring Dynamic VLAN Registration 177
IEEE 802.1Q Tunneling 181
Enabling QinQ Tunneling on the Switch 185
Adding an Interface to a QinQ Tunnel 186
Protocol VLANs 188
Configuring Protocol VLAN Groups 188
Mapping Protocol Groups to Interfaces 190
Configuring IP Subnet VLANs 192
Configuring MAC-based VLANs 194
Configuring VLAN Mirroring 196
7 ADDRESS TABLE SETTINGS 199
Setting Static Addresses 199
Changing the Aging Time 201
Displaying the Dynamic Address Table 202
Clearing the Dynamic Address Table 203
Configuring MAC Address Mirroring 204
8SPANNING TREE ALGORITHM 207
Overview 207
Configuring Loopback Detection 210
Configuring Global Settings for STA 211
Displaying Global Settings for STA 216
Configuring Interface Settings for STA 217
Displaying Interface Settings for STA 221
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Configuring Multiple Spanning Trees 224
Configuring Interface Settings for MSTP 228
9RATE LIMIT CONFIGURATION 231
10 S
TORM CONTROL CONFIGURATION 233
LASSOF SERVICE 235
11 C
Layer 2 Queue Settings 235
Setting the Default Priority for Interfaces 235
Selecting the Queue Mode 236
Mapping CoS Values to Egress Queues 239
Layer 3/4 Priority Settings 242
Mapping Layer 3/4 Priorities to CoS Values 242
Setting Priority Processing to DSCP or CoS 242
Mapping Ingress DSCP Values to Internal DSCP Values 243
Mapping CoS Priorities to Internal DSCP Values 246
Table 162: show ipv6 interface - display description 1109
Table 163: show ipv6 mtu - display description 1111
Table 164: show ipv6 traffic - display description 1112
Table 165: show ipv6 neighbors - display description 1121
Table 166: Troubleshooting Chart 1131
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T
ABLES
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S
ECTION
GETTING STARTED
This section provides an overview of the switch, and introduces some basic
concepts about network switches. It also describes the basic settings
required to access the management interface.
This section includes these chapters:
"Introduction" on page 53
"Initial Switch Configuration" on page 63
I
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S
ECTION
I
| Getting Started
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1INTRODUCTION
This switch provides a broad range of features for Layer 2 switching. It
includes a management agent that allows you to configure the features
listed in this manual. The default configuration can be used for most of the
features provided by this switch. However, there are many options that you
should configure to maximize the switch’s performance for your particular
network environment.
KEY FEATURES
Table 1: Key Features
FeatureDescription
Configuration Backup
and Restore
Using management station or FTP/TFTP server
AuthenticationConsole, Telnet, web – user name/password, RADIUS, TACACS+
General Security
Measures
Access Control ListsSupports up to 512 rules, 64 ACLs, and a maximum of 64 rules for
DHCPClient
DNS Client and Proxy service
Port ConfigurationSpeed, duplex mode, and flow control
Port TrunkingSupports up to 5 trunks – static or dynamic trunking (LACP)
Port Mirroring10 sessions, one or more source ports to one analysis port
Congestion ControlRate Limiting
Address Table8K MAC addresses in the forwarding table, 1K static MAC
Port – IEEE 802.1X, MAC address filtering
SNMP v1/2c - Community strings
SNMP version 3 – MD5 or SHA password
Tel n e t – SS H
Web – HTTPS
AAA
ARP Inspection
DHCP Snooping (with Option 82 relay information)
IP Source Guard
Port Authentication – IEEE 802.1X
Port Security – MAC address filtering
an ACL
Throttling for broadcast, multicast, unknown unicast storms
Random Early Detection
addresses, 255 L2 multicast groups
IP Version 4 and 6Supports IPv4 and IPv6 addressing, and management
IEEE 802.1D BridgeSupports dynamic data switching and addresses learning
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Description of Software Features
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| Introduction
Table 1: Key Features (Continued)
FeatureDescription
Store-and-Forward
Switching
Spanning Tree Algorithm Supports standard STP, Rapid Spanning Tree Protocol (RSTP), and
Supported to ensure wire-speed switching while eliminating bad
frames
Multiple Spanning Trees (MSTP)
Virtual LANsUp to 4093 using IEEE 802.1Q, port-based, protocol-based,
Traffic PrioritizationDefault port priority, traffic class map, queue scheduling, IP
Quality of ServiceSupports Differentiated Services (DiffServ)
Link Layer Discovery
Protocol
Multicast FilteringSupports IGMP snooping and query, and Multicast VLAN
Switch ClusteringSupports up to 36 member switches in a cluster
Connectivity Fault
Management
ERPSSupports Ethernet Ring Protection Switching for increased
Remote Device
Management
DESCRIPTIONOF SOFTWARE FEATURES
The switch provides a wide range of advanced performance enhancing
features. Flow control eliminates the loss of packets due to bottlenecks
caused by port saturation. Broadcast storm suppression prevents
broadcast traffic storms from engulfing the network. Untagged (portbased), tagged, and protocol-based VLANs, plus support for automatic
GVRP VLAN registration provide traffic security and efficient use of network
bandwidth. CoS priority queueing ensures the minimum delay for moving
real-time multimedia data across the network. While multicast filtering
provides support for real-time network applications.
voice VLANs, and QinQ tunnel
Precedence, or Differentiated Services Code Point (DSCP)
Used to discover basic information about neighboring devices
Registration
Connectivity monitoring using continuity check messages, fault
verification through loop back messages, and fault isolation by
examining end-to-end connections
availability of Ethernet rings (G.8032)
Supports OAM functions for attached CPEs
Some of the management features are briefly described below.
CONFIGURATION
BACKUPAND
RESTORE
You can save the current configuration settings to a file on the
management station (using the web interface) or an FTP/TFTP server
(using the web or console interface), and later download this file to restore
the switch configuration settings.
AUTHENTICATIONThis switch authenticates management access via the console port, Telnet,
or a web browser. User names and passwords can be configured locally or
can be verified via a remote authentication server (i.e., RADIUS or
TACACS+). Port-based authentication is also supported via the IEEE
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802.1X protocol. This protocol uses Extensible Authentication Protocol over
LANs (EAPOL) to request user credentials from the 802.1X client, and then
uses the EAP between the switch and the authentication server to verify
the client’s right to access the network via an authentication server (i.e.,
RADIUS or TACACS+ server).
Other authentication options include HTTPS for secure management access
via the web, SSH for secure management access over a Telnet-equivalent
connection, SNMP Version 3, IP address filtering for SNMP/Telnet/web
management access. MAC address filtering and IP source guard also
provide authenticated port access. While DHCP snooping is provided to
prevent malicious attacks from insecure ports.
1
| Introduction
ACCESS CONTROL
LISTS
ACLs provide packet filtering for IP frames (based on address, protocol,
TCP/UDP port number or TCP control code) or any frames (based on MAC
address or Ethernet type). ACLs can by used to improve performance by
blocking unnecessary network traffic or to implement security controls by
restricting access to specific network resources or protocols.
PORT CONFIGURATIONYou can manually configure the speed, duplex mode, and flow control used
on specific ports, or use auto-negotiation to detect the connection settings
used by the attached device. Use the full-duplex mode on ports whenever
possible to double the throughput of switch connections. Flow control
should also be enabled to control network traffic during periods of
congestion and prevent the loss of packets when port buffer thresholds are
exceeded. The switch supports flow control based on the IEEE 802.3x
standard (now incorporated in IEEE 802.3-2002).
PORT MIRRORINGThe switch can unobtrusively mirror traffic from any port to a monitor port.
You can then attach a protocol analyzer or RMON probe to this port to
perform traffic analysis and verify connection integrity.
PORT TRUNKINGPorts can be combined into an aggregate connection. Trunks can be
manually set up or dynamically configured using Link Aggregation Control
Protocol (LACP – IEEE 802.3-2005). The additional ports dramatically
increase the throughput across any connection, and provide redundancy by
taking over the load if a port in the trunk should fail. The switch supports
up to 12 trunks.
RATE LIMITINGThis feature controls the maximum rate for traffic transmitted or received
on an interface. Rate limiting is configured on interfaces at the edge of a
network to limit traffic into or out of the network. Packets that exceed the
acceptable amount of traffic are dropped.
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Description of Software Features
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| Introduction
STORM CONTROLBroadcast, multicast and unknown unicast storm suppression prevents
traffic from overwhelming the network.When enabled on a port, the level of
broadcast traffic passing through the port is restricted. If broadcast traffic
rises above a pre-defined threshold, it will be throttled until the level falls
back beneath the threshold.
STATIC ADDRESSESA static address can be assigned to a specific interface on this switch.
Static addresses are bound to the assigned interface and will not be
moved. When a static address is seen on another interface, the address will
be ignored and will not be written to the address table. Static addresses
can be used to provide network security by restricting access for a known
host to a specific port.
IP ADDRESS
FILTERING
Access to insecure ports can be controlled using DHCP Snooping which
filters ingress traffic based on static IP addresses and addresses stored in
the DHCP Snooping table. Traffic can also be restricted to specific source IP
addresses or source IP/MAC address pairs based on static entries or entries
stored in the DHCP Snooping table.
facilitates data switching by learning addresses, and then filtering or
forwarding traffic based on this information. The address table supports up
to 8K addresses.
STORE-AND-FORWARD
SWITCHING
The switch copies each frame into its memory before forwarding them to
another port. This ensures that all frames are a standard Ethernet size and
have been verified for accuracy with the cyclic redundancy check (CRC).
This prevents bad frames from entering the network and wasting
bandwidth.
To avoid dropping frames on congested ports, the switch provides 4 Mbits
for frame buffering. This buffer can queue packets awaiting transmission
on congested networks.
SPANNING TREE
ALGORITHM
The switch supports these spanning tree protocols:
Spanning Tree Protocol (STP, IEEE 802.1D) – This protocol provides
loop detection. When there are multiple physical paths between
segments, this protocol will choose a single path and disable all others
to ensure that only one route exists between any two stations on the
network. This prevents the creation of network loops. However, if the
chosen path should fail for any reason, an alternate path will be
activated to maintain the connection.
Rapid Spanning Tree Protocol (RSTP, IEEE 802.1w) – This protocol
reduces the convergence time for network topology changes to about 3
to 5 seconds, compared to 30 seconds or more for the older IEEE
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802.1D STP standard. It is intended as a complete replacement for STP,
but can still interoperate with switches running the older standard by
automatically reconfiguring ports to STP-compliant mode if they detect
STP protocol messages from attached devices.
Multiple Spanning Tree Protocol (MSTP, IEEE 802.1s) – This protocol is
a direct extension of RSTP. It can provide an independent spanning tree
for different VLANs. It simplifies network management, provides for
even faster convergence than RSTP by limiting the size of each region,
and prevents VLAN members from being segmented from the rest of
the group (as sometimes occurs with IEEE 802.1D STP).
1
| Introduction
CONNECTIVITY FAULT
MANAGEMENT
The switch provides connectivity fault monitoring for end-to-end
connections within a designated service area by using continuity check
messages which can detect faults in maintenance points, fault verification
through loop back messages, and fault isolation with link trace messages.
VIRTUAL LANSThe switch supports up to 4093 VLANs. A Virtual LAN is a collection of
network nodes that share the same collision domain regardless of their
physical location or connection point in the network. The switch supports
tagged VLANs based on the IEEE 802.1Q standard. Members of VLAN
groups can be dynamically learned via GVRP, or ports can be manually
assigned to a specific set of VLANs. This allows the switch to restrict traffic
to the VLAN groups to which a user has been assigned. By segmenting
your network into VLANs, you can:
Eliminate broadcast storms which severely degrade performance in a
flat network.
Simplify network management for node changes/moves by remotely
configuring VLAN membership for any port, rather than having to
manually change the network connection.
Provide data security by restricting all traffic to the originating VLAN,
except where a connection is explicitly defined via the switch's routing
service.
IEEE 802.1Q
UNNELING(QINQ)
T
Use private VLANs to restrict traffic to pass only between data ports
and the uplink ports, thereby isolating adjacent ports within the same
VLAN, and allowing you to limit the total number of VLANs that need to
be configured.
Use protocol VLANs to restrict traffic to specified interfaces based on
protocol type.
This feature is designed for service providers carrying traffic for multiple
customers across their networks. QinQ tunneling is used to maintain
customer-specific VLAN and Layer 2 protocol configurations even when
different customers use the same internal VLAN IDs. This is accomplished
by inserting Service Provider VLAN (SPVLAN) tags into the customer’s
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1
| Introduction
frames when they enter the service provider’s network, and then stripping
the tags when the frames leave the network.
TRAFFIC
PRIORITIZATION
This switch prioritizes each packet based on the required level of service,
using four priority queues with strict priority, Weighted Round Robin
(WRR), or a combination of strict and weighted queuing. It uses IEEE
802.1p and 802.1Q tags to prioritize incoming traffic based on input from
the end-station application. These functions can
independent priorities for delay-sensitive data and best-effort data.
This switch also supports several common methods of prioritizing layer 3/4
traffic to meet application requirements. Traffic can be prioritized based on
the priority bits in the IP frame’s Type of Service (ToS) octet using DSCP, or
IP Precedence. When these services are enabled, the priorities are mapped
to a Class of Service value by the switch, and the traffic then sent to the
corresponding output queue.
mechanisms used for prioritizing network resources to meet the
requirements of specific traffic types on a per-hop basis. Each packet is
classified upon entry into the network based on access lists, IP Precedence
or DSCP values, or VLAN lists. Using access lists allows you select traffic
based on Layer 2, Layer 3, or Layer 4 information contained in each
packet. Based on network policies, different kinds of traffic can be marked
for different kinds of forwarding.
MULTICAST FILTERINGSpecific multicast traffic can be assigned to its own VLAN to ensure that it
does not interfere with normal network traffic and to guarantee real-time
delivery by setting the required priority level for the designated VLAN. The
switch uses IGMP Snooping and Query to manage multicast group
registration. It also supports Multicast VLAN Registration (MVR) which
allows common multicast traffic, such as television channels, to be
transmitted across a single network-wide multicast VLAN shared by hosts
residing in other standard or private VLAN groups, while preserving
security and data isolation for normal traffic.
LINK LAYER
DISCOVERY
PROTOCOL
LLDP is used to discover basic information about neighboring devices
within the local broadcast domain. LLDP is a Layer 2 protocol that
advertises information about the sending device and collects information
gathered from neighboring network nodes it discovers.
Advertised information is represented in Type Length Value (TLV) format
according to the IEEE 802.1ab standard, and can include details such as
device identification, capabilities and configuration settings. Media
Endpoint Discovery (LLDP-MED) is an extension of LLDP intended for
managing endpoint devices such as Voice over IP phones and network
switches. The LLDP-MED TLVs advertise information such as network
policy, power, inventory, and device location details. The LLDP and LLDP-
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| Introduction
System Defaults
MED information can be used by SNMP applications to simplify
troubleshooting, enhance network management, and maintain an accurate
network topology.
ETHERNET RING
PROTECTION
SWITCHING
SYSTEM DEFAULTS
ERPS can also be used to increase the availability and robustness of
Ethernet rings, such as those used in Metropolitan Area Networks (MAN).
ERPS technology converges in a little over 50 ms. ERPS supports up to 255
nodes in the ring structure. And the convergence time is also independent
of the number of nodes in the ring.
The switch’s system defaults are provided in the configuration file
“Factory_Default_Config.cfg.” To reset the switch defaults, this file should
be set as the startup configuration file.
The following table lists some of the basic system defaults.
SMTP Email AlertsEvent HandlerEnabled (but no server defined)
SNTP Clock SynchronizationDisabled
Switch ClusteringStatusDisabled
CommanderDisabled
Querier: Disabled
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| Introduction
System Defaults
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2INITIAL SWITCH CONFIGURATION
This chapter includes information on connecting to the switch and basic
configuration procedures.
CONNECTINGTOTHE SWITCH
The switch includes a built-in network management agent. The agent
offers a variety of management options, including SNMP, RMON and a webbased interface. A PC may also be connected directly to the switch for
configuration and monitoring via a command line interface (CLI).
N
OTE
:
An IPv4 address for this switch is obtained via DHCP by default. To
change this address, see "Setting an IP Address" on page 67.
CONFIGURATION
OPTIONS
The switch’s HTTP web agent allows you to configure switch parameters,
monitor port connections, and display statistics using a standard web
browser such as Internet Explorer 5.x or above, Netscape 6.2 or above,
and Mozilla Firefox 2.0.0.0 or above. The switch’s web management
interface can be accessed from any computer attached to the network.
The CLI program can be accessed by a direct connection to the RS-232
serial console port on the switch, or remotely by a Telnet connection over
the network.
The switch’s management agent also supports SNMP (Simple Network
Management Protocol). This SNMP agent permits the switch to be managed
from any system in the network using network management software.
The switch’s web interface, console interface, and SNMP agent allow you to
perform the following management functions:
Set user names and passwords
Set an IP interface for
Configure SNMP parameters
Enable/disable any port
a management VLAN
Set the speed/duplex mode for any port
Configure the bandwidth of any port by limiting input or output rates
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| Initial Switch Configuration
Control port access through IEEE 802.1X security or static address
filtering
Filter packets using Access Control Lists (ACLs)
Configure up to 256 IEEE 802.1Q VLANs
Enable GVRP automatic VLAN registration
Configure IGMP multicast filtering
Upload and download system firmware or configuration files via HTTP
(using the web interface) or FTP/TFTP (using the command line or web
interface)
Configure Spanning Tree parameters
Configure Class of Service (CoS) priority queuing
Configure static or LACP trunks (up to 5)
REQUIRED
CONNECTIONS
Enable port mirroring
Set storm control on any port for excessive broadcast, multicast, or
unknown unicast traffic
Display system information and statistics
The switch provides an RS-232 serial port that enables a connection to a
PC or terminal for monitoring and configuring the switch. A null-modem
console cable is provided with the switch.
Attach a VT100-compatible terminal, or a PC running a terminal emulation
program to the switch. You can use the console cable provided with this
package, or use a null-modem cable that complies with the wiring
assignments shown in the Installation Guide.
To connect a terminal to the console port, complete the following steps:
1. Connect the console cable to the serial port on a terminal, or a PC
running terminal emulation software, and tighten the captive retaining
screws on the DB-9 connector.
2. Connect the other end of the cable to the RS-232 serial port on the
switch.
3. Make sure the terminal emulation software is set as follows:
Select the appropriate serial port (COM port 1 or COM port 2).
Set the baud rate to 115200 bps.
Set the data format to 8 data bits, 1 stop bit, and no parity.
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Set flow control to none.
Set the emulation mode to VT100.
When using HyperTerminal, select Terminal keys, not Windows
2
| Initial Switch Configuration
Connecting to the Switch
keys.
N
OTE
:
Once you have set up the terminal correctly, the console login screen
will be displayed.
For a description of how to use the CLI, see "Using the Command Line
Interface" on page 551. For a list of all the CLI commands and detailed
information on using the CLI, refer to "CLI Command Groups" on
page 560.
REMOTE
CONNECTIONS
Prior to accessing the switch’s onboard agent via a network connection,
you must first configure it with a valid IP address, subnet mask, and
default gateway using a console connection, or DHCP protocol.
An IPv4 address for this switch is obtained via DHCP by default. To
manually configure this address or enable dynamic address assignment via
DHCP, see "Setting an IP Address" on page 67.
N
OTE
:
This switch supports four Telnet sessions or SSH sessions.
After configuring the switch’s IP parameters, you can access the onboard
configuration program from anywhere within the attached network. The
onboard configuration program can be accessed using Telnet from any
computer attached to the network. The switch can also be managed by any
computer using a web browser (Internet Explorer 5.0 or above, Netscape
6.2 or above, or Mozilla Firefox 2.0.0.0 or above), or from a network
computer using SNMP network management software.
The onboard program only provides access to basic configuration functions.
To access the full range of SNMP management functions, you must use
SNMP-based network management software.
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| Initial Switch Configuration
BASIC CONFIGURATION
CONSOLE
CONNECTION
The CLI program provides two different command levels — normal access
level (Normal Exec) and privileged access level (Privileged Exec). The
commands available at the Normal Exec level are a limited subset of those
available at the Privileged Exec level and allow you to only display
information and use basic utilities. To fully configure the switch
parameters, you must access the CLI at the Privileged Exec level.
Access to both CLI levels are controlled by user names and passwords. The
switch has a default user name and password for each level. To log into the
CLI at the Privileged Exec level using the default user name and password,
perform these steps:
1. To initiate your console connection, press <Enter>. The “User Access
Verification” procedure starts.
2. At the User Name prompt, enter “admin.”
3. At the Password prompt, also enter “admin.” (The password characters
are not displayed on the console screen.)
4. The session is opened and the CLI displays the “Console#” prompt
indicating you have access at the Privileged Exec level.
SETTING PASSWORDSIf this is your first time to log into the CLI program, you should define new
passwords for both default user names using the “username” command,
record them and put them in a safe place.
Passwords can consist of up to 32 alphanumeric characters and are case
sensitive. To prevent unauthorized access to the switch, set the passwords
as follows:
1. Open the console interface with the default user name and password
“admin” to access the Privileged Exec level.
2. Type “configure” and press <Enter>.
3. Type “username guest password 0 password,” for the Normal Exec
level, where password is your new password. Press <Enter>.
4. Type “username admin password 0 password,” for the Privileged Exec
level, where password is your new password. Press <Enter>.
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Username: admin
Password:
CLI session with the DG-FS4526E is opened.
To end the CLI session, enter [Exit].
You must establish IP address information for the switch to obtain
management access through the network. This can be done in either of the
following ways:
Manual — You have to input the information, including IP address and
subnet mask. If your management station is not in the same IP subnet
as the switch, you will also need to specify the default gateway router.
Dynamic — The switch can send IPv4 configuration requests to BOOTP
or DHCP address allocation servers on the network, or can
automatically generate a unique IPv6 host address based on the local
subnet address prefix received in router advertisement messages. An
IPv6 link local address for use in a local network can also be
dynamically generated as described in "Obtaining an IPv6 Address" on
page 71.
The current software does not support DHCP for IPv6, so an IPv6 global
unicast address for use in a network containing more than one subnet
can only be manually configured as described in "Assigning an IPv6
Address" on page 68.
MANUAL CONFIGURATION
You can manually assign an IP address to the switch. You may also need to
specify a default gateway that resides between this device and
management stations that exist on another network segment. Valid IPv4
addresses consist of four decimal numbers, 0 to 255, separated by periods.
Anything outside this format will not be accepted by the CLI program.
N
OTE
:
The IPv4 address for this switch is obtained via DHCP by default.
ASSIGNINGAN IPV4 ADDRESS
Before you can assign an IP address to the switch, you must obtain the
following information from your network administrator:
IP address for the switch
Network mask for this network
Default gateway for the network
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| Initial Switch Configuration
To assign an IPv4 address to the switch, complete the following steps
1. From the Global Configuration mode prompt, type “interface vlan 1” to
access the interface-configuration mode. Press <Enter>.
2. Type “ip address ip-address netmask,” where “ip-address” is the switch
IP address and “netmask” is the network mask for the network. Press
<Enter>.
3. Type “exit” to return to the global configuration mode prompt. Press
<Enter>.
4. To set the IP address of the default gateway for the network to which
the switch belongs, type “ip default-gateway gateway,” wh er e
“gateway” is the IP address of the default gateway. Press <Enter>.
This section describes how to configure a “link local” address for
connectivity within the local subnet only, and also how to configure a
“global unicast” address, including a network prefix for use on a multisegment network and the host portion of the address.
An IPv6 prefix or address must be formatted according to RFC 2373 “IPv6
Addressing Architecture,” using 8 colon-separated 16-bit hexadecimal
values. One double colon may be used to indicate the appropriate number
of zeros required to fill the undefined fields. For detailed information on the
other ways to assign IPv6 addresses, see "Setting the Switch’s IP Address
(IP Version 6)" on page 493.
Link Local Address — All link-local addresses must be configured with a
prefix of FE80. Remember that this address type makes the switch
accessible over IPv6 for all devices attached to the same local subnet only.
Also, if the switch detects that the address you configured conflicts with
that in use by another device on the subnet, it will stop using the address
in question, and automatically generate a link local address that does not
conflict with any other devices on the local subnet.
To configure an IPv6 link local address for the switch, complete the
following steps:
1. From the Global Configuration mode prompt, type “interface vlan 1” to
access the interface-configuration mode. Press <Enter>.
2. Type “ipv6 address” followed by up to 8 colon-separated 16-bit
hexadecimal values for the ipv6-address similar to that shown in the
example, followed by the “link-local” command parameter. Then press
<Enter>.
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Console(config)#interface vlan 1
Console(config-if)#ipv6 address FE80::260:3EFF:FE11:6700 link-local
Console(config-if)#ipv6 enable
Console(config-if)#end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled.
Link-local address:
FE80::260:3EFF:FE11:6700/64
Global unicast address(es):
(None)
Joined group address(es):
FF02::1:FF11:6700
FF02::1
IPv6 link MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 3.
ND retransmit interval is 1000 milliseconds
Console#
2
| Initial Switch Configuration
Basic Configuration
Address for Multi-segment Network — Before you can assign an IPv6
address to the switch that will be used to connect to a multi-segment
network, you must obtain the following information from your network
administrator:
Prefix for this network
IP address for the switch
Default gateway for the network
For networks that encompass several different subnets, you must define
the full address, including a network prefix and the host address for the
switch. You can specify either the full IPv6 address, or the IPv6 address
and prefix length. The prefix length for an IPv6 network is the number of
bits (from the left) of the prefix that form the network address, and is
expressed as a decimal number. For example, all IPv6 addresses that start
with the first byte of 73 (hexadecimal) could be expressed as
73:0:0:0:0:0:0:0/8 or 73::/8.
To generate an IPv6 global unicast address for the switch, complete the
following steps:
1. From the global configuration mode prompt, type “interface vlan 1” to
access the interface-configuration mode. Press <Enter>.
2. From the interface prompt, type “ipv6 address ipv6-address” or
“ipv6 address ipv6-address/prefix-length,” w h er e “ pr ef ix - le ng th ”
indicates the address bits used to form the network portion of the
address. (The network address starts from the left of the prefix and
should encompass some of the ipv6-address bits.) The remaining bits
are assigned to the host interface. Press <Enter>.
3. Type “exit” to return to the global configuration mode prompt. Press
<Enter>.
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Basic Configuration
2
| Initial Switch Configuration
4. To set the IP address of the IPv6 default gateway for the network to
which the switch belongs, type “ipv6 default-gateway gateway,” wh e re
“gateway” is the IPv6 address of the default gateway. Press <Enter>.
Console(config)#interface vlan 1
Console(config-if)#ipv6 address 2001:DB8:2222:7272::/64
Console(config-if)#exit
Console(config)#ipv6 default-gateway 2001:DB8:2222:7272::254
Console(config)end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled.
Link-local address:
FE80::260:3EFF:FE11:6700/64
Global unicast address(es):
2001:DB8:2222:7272::/64, subnet is 2001:DB8:2222:7272::/64
Joined group address(es):
FF02::1:FF00:0
FF02::1:FF11:6700
FF02::1
IPv6 link MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 3.
ND retransmit interval is 1000 milliseconds
If you select the “bootp” or “dhcp” option, the system will immediately
start broadcasting service requests. IP will be enabled but will not function
until a BOOTP or DHCP reply has been received. Requests are broadcast
every few minutes using exponential backoff until IP configuration
information is obtained from a BOOTP or DHCP server. BOOTP and DHCP
values can include the IP address, subnet mask, and default gateway. If
the DHCP/BOOTP server is slow to respond, you may need to use the “ip
dhcp restart client” command to re-start broadcasting service requests.
Note that the “ip dhcp restart client” command can also be used to start
broadcasting service requests for all VLANs configured to obtain address
assignments through BOOTP or DHCP. It may be necessary to use this
command when DHCP is configured on a VLAN, and the member ports
which were previously shut down are now enabled.
If the “bootp” or “dhcp” option is saved to the startup-config file (step 6),
then the switch will start broadcasting service requests as soon as it is
powered on.
To automatically configure the switch by communicating with BOOTP or
DHCP address allocation servers on the network, complete the following
steps:
1. From the Global Configuration mode prompt, type “interface vlan 1” to
access the interface-configuration mode. Press <Enter>.
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| Initial Switch Configuration
Basic Configuration
2. At the interface-configuration mode prompt, use one of the following
commands:
To obtain IP settings via DHCP, type “ip address dhcp” and press
<Enter>.
To obtain IP settings via BOOTP, type “ip address bootp” and press
<Enter>.
3. Type “end” to return to the Privileged Exec mode. Press <Enter>.
4. Wait a few minutes, and then check the IP configuration settings by
typing the “show ip interface” command. Press <Enter>.
5. Then save your configuration changes by typing “copy running-config
startup-config.” Enter the startup file name and press <Enter>.
Console(config)#interface vlan 1
Console(config-if)#ip address dhcp
Console(config-if)#end
Console#show ip interface
Loopback 0 is Administrative Up - Link Up
Address is 00-00-00-00-00-00
Index: 746, MTU: 0
Address Mode is User specified
VLAN 1 is Administrative Up - Link Up
Address is 00-17-7C-DA-FC-E8
Index: 1001, MTU: 1500
Address Mode is DHCP
IP Address: 192.168.0.2 Mask: 255.255.255.0
Console#copy running-config startup-config
Startup configuration file name []: startup
\Write to FLASH Programming.
\Write to FLASH finish.
Success.
OBTAININGAN IPV6 ADDRESS
Link Local Address — There are several ways to configure IPv6 addresses.
The simplest method is to automatically generate a “link local” address
(identified by an address prefix of FE80). This address type makes the
switch accessible over IPv6 for all devices attached to the same local
subnet.
To generate an IPv6 link local address for the switch, complete the
following steps:
1. From the Global Configuration mode prompt, type “interface vlan 1” to
access the interface-configuration mode. Press <Enter>.
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled.
Link-local address:
FE80::260:3EFF:FE11:6700/64
Global unicast address(es):
2001:DB8:2222:7272::/64, subnet is 2001:DB8:2222:7272::/64
Joined group address(es):
FF02::1:FF00:0
FF02::1:FF11:6700
FF02::1
IPv6 link MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 3.
ND retransmit interval is 1000 milliseconds
Console#
Address for Multi-segment Network — To generate an IPv6 address that
can be used in a network containing more than one subnet, the switch can
be configured to automatically generate a unique host address based on
the local subnet address prefix received in router advertisement messages.
(DHCP for IPv6 will also be supported in future software releases.)
To dynamically generate an IPv6 host address for the switch, complete the
following steps:
1. From the Global Configuration mode prompt, type “interface vlan 1” to
access the interface-configuration mode. Press <Enter>.
2. From the interface prompt, type “ipv6 address autoconfig” and press
<Enter>.
3. Type “ipv6 enable” and press <Enter> to enable IPv6 on an interface
that has not been configured with an explicit IPv6 address.
Console(config)#interface vlan 1
Console(config-if)#ipv6 address autoconfig
Console(config-if)#ipv6 enable
Console(config-if)#end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled.
Link-local address:
FE80::260:3EFF:FE11:6700/64
Global unicast address(es):
2001:DB8:2222:7272:217:7CFF:FE00:FD/64, subnet is 2001:DB8:2222:7272::/
64[AUTOCONFIG]
valid lifetime 2591978 preferred lifetime 604778
Joined group address(es):
FF02::1:FF00:FD
FF02::1:FF11:6700
FF02::1
IPv6 link MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 3.
ND retransmit interval is 1000 milliseconds
Console#
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| Initial Switch Configuration
Basic Configuration
DOWNLOADINGA
CONFIGURATION FILE
REFERENCEDBYA
DHCP SERVER
Information passed on to the switch from a DHCP server may also include a
configuration file to be downloaded and the TFTP servers where that file
can be accessed. If the Factory Default Configuration file is used to
provision the switch at startup, in addition to requesting IP configuration
settings from the DHCP server, it will also ask for the name of a bootup
configuration file and TFTP servers where that file is stored.
If the switch receives information that allows it to download the remote
bootup file, it will save this file to a local buffer, and then restart the
provision process.
Note the following DHCP client behavior:
The bootup configuration file received from a TFTP server is stored on
the switch with the original file name. If this file name already exists in
the switch, the file is overwritten.
If the name of the bootup configuration file is the same as the Factory
Default Configuration file, the download procedure will be terminated,
and the switch will not send any further DHCP client requests.
If the switch fails to download the bootup configuration file based on
information passed by the DHCP server, it will not send any further
DHCP client requests.
If the switch does not receive a DHCP response prior to completing the
bootup process, it will continue to send a DHCP client request once a
minute. These requests will only be terminated if the switch’s address is
manually configured, but will resume if the address mode is set back to
DHCP.
To successfully transmit a bootup configuration file to the switch the DHCP
daemon (using a Linux based system for this example) must be configured
with the following information:
Options 60, 66 and 67 statements can be added to the daemon’s
configuration file.
Table 3: Options 60, 66 and 67 Statements
Option
KeywordParameter
60vendor-class-identifiera string indicating the vendor class identifier
66tftp-server-namea string indicating the tftp server name
67bootfile-namea string indicating the bootfile name
Statement
By default, DHCP option 66/67 parameters are not carried in a DHCP
server reply. To ask for a DHCP reply with option 66/67 information, the
DHCP client request sent by this switch includes a “parameter request
list” asking for this information. Besides, the client request also
includes a “vendor class identifier” that allows the DHCP server to
identify the device, and select the appropriate configuration file for
download. This information is included in Option 55 and 124.
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| Initial Switch Configuration
Table 4: Options 55 and 124 Statements
Option
KeywordParameter
55dhcp-parameter-request-list a list of parameters, separated by ','
124vendor-class-identifiera string indicating the vendor class identifier
Statement
The following configuration examples are provided for a Linux-based DHCP
daemon (dhcpd.conf file). The server will reply with Options 66/67
encapsulated in Option 43. Note that in the “Vendor class one” section,
if the DHCP request packet's vendor class identifier matches that specified
in this file, the server will send Option 43 encapsulating Option 66 and 67
in the DHCP reply packet. In the “Vendor class two” section, the server will
always send Option 66 and 67 to tell switch to download the “test2”
configuration file from server 192.168.255.101.
class "Option66,67_1" { #DHCP Option 60 Vendor class
one
match if option vendor-class-identifier = "dg-fs4526e.bix";
#option 43
option vendor-class-information code 43 = encapsulate
dynamicProvision;
#option 66 encapsulated in option 43
option vendor-class-information.tftp-server-name "192.168.255.100";
#option 67 encapsulated in option 43
option vendor-class-information.bootfile-name "test1"
}
class "Option66,67_2" {#DHCP Option 60 Vendor class
two
match if option vendor-class-identifier = "dg-fs4526e.bix";
option tftp-server-name "192.168.255.101";
option bootfile-name "test2";
}
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N
OTE
:
Use “dg-fs4526e.bix” for the vendor-class-identifier in the
2
| Initial Switch Configuration
Basic Configuration
dhcpd.conf file.
ENABLING SNMP
M
ANAGEMENT A CCESS
The switch can be configured to accept management commands from
Simple Network Management Protocol (SNMP) applications. You can
configure the switch to respond to SNMP requests or generate SNMP traps.
When SNMP management stations send requests to the switch (either to
return information or to set a parameter), the switch provides the
requested data or sets the specified parameter. The switch can also be
configured to send information to SNMP managers (without being
requested by the managers) through trap messages, which inform the
manager that certain events have occurred.
The switch includes an SNMP agent that supports SNMP version 1, 2c, and
3 clients. To provide management access for version 1 or 2c clients, you
must specify a community string. The switch provides a default MIB View
(i.e., an SNMPv3 construct) for the default “public” community string that
provides read access to the entire MIB tree, and a default view for the
“private” community string that provides read/write access to the entire
MIB tree. However, you may assign new views to version 1 or 2c
community strings that suit your specific security requirements (see
"Setting SNMPv3 Views" on page 395).
COMMUNITY STRINGS (FOR SNMP VERSION 1 AND 2CCLIENTS)
Community strings are used to control management access to SNMP
version 1 and 2c stations, as well as to authorize SNMP stations to receive
trap messages from the switch. You therefore need to assign community
strings to specified users, and set the access level.
The default strings are:
public - with read-only access. Authorized management stations are
only able to retrieve MIB objects.
private - with read/write access. Authorized management stations are
able to both retrieve and modify MIB objects.
To prevent unauthorized access to the switch from SNMP version 1 or 2c
clients, it is recommended that you change the default community strings.
To configure a community string, complete the following steps:
1. From the Privileged Exec level global configuration mode prompt, type
“snmp-server community string mode,” where “string” is the
community access string and “mode” is rw (read/write) or ro (read
only). Press <Enter>. (Note that the default mode is read only.)
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| Initial Switch Configuration
2. To remove an existing string, simply type “no snmp-server community
string,” where “string” is the community access string to remove. Press
<Enter>.
Console(config)#snmp-server community admin rw
Console(config)#snmp-server community private
Console(config)#
N
OTE
:
If you do not intend to support access to SNMP version 1 and 2c
clients, we recommend that you delete both of the default community
strings. If there are no community strings, then SNMP management access
from SNMP v1 and v2c clients is disabled.
TRAP RECEIVERS
You can also specify SNMP stations that are to receive traps from the
switch. To configure a trap receiver, use the “snmp-server host” command.
From the Privileged Exec level global configuration mode prompt, type:
“snmp-server host host-address community-string
[version {1 | 2c | 3 {auth | noauth | priv}}]”
where “host-address” is the IP address for the trap receiver, “communitystring” specifies access rights for a version 1/2c host, or is the user name
of a version 3 host, “version” indicates the SNMP client version, and “auth |
noauth | priv” means that authentication, no authentication, or
authentication and privacy is used for v3 clients. Then press <Enter>. For
a more detailed description of these parameters, see "snmp-server host"
on page 638. The following example creates a trap host for each type of
SNMP client.
Console(config)#snmp-server host 10.1.19.23 batman
Console(config)#snmp-server host 10.1.19.98 robin version 2c
Console(config)#snmp-server host 10.1.19.34 barbie version 3 auth
Console(config)#
CONFIGURING ACCESSFOR SNMP VERSION 3 CLIENTS
To configure management access for SNMPv3 clients, you need to first
create a view that defines the portions of MIB that the client can read or
write, assign the view to a group, and then assign the user to a group. The
following example creates one view called “mib-2” that includes the entire
MIB-2 tree branch, and then another view that includes the IEEE 802.1d
bridge MIB. It assigns these respective read and read/write views to a
group call “r&d” and specifies group authentication via MD5 or SHA. In the
last step, it assigns a v3 user to this group, indicating that MD5 will be
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used for authentication, provides the password “greenpeace” for
authentication, and the password “einstien” for encryption.
Console(config)#snmp-server view mib-2 1.3.6.1.2.1 included
Console(config)#snmp-server view 802.1d 1.3.6.1.2.1.17 included
Console(config)#snmp-server group r&d v3 auth mib-2 802.1d
Console(config)#snmp-server user steve group r&d v3 auth md5 greenpeace priv
des56 einstien
Console(config)#
For a more detailed explanation on how to configure the switch for access
from SNMP v3 clients, refer to "Simple Network Management Protocol" on
page 389, or refer to the specific CLI commands for SNMP starting on
page 633.
MANAGING SYSTEM FILES
The switch’s flash memory supports three types of system files that can be
managed by the CLI program, web interface, or SNMP. The switch’s file
system allows files to be uploaded and downloaded, copied, deleted, and
set as a start-up file.
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| Initial Switch Configuration
Managing System Files
The types of files are:
Configuration — This file type stores system configuration information
and is created when configuration settings are saved. Saved
configuration files can be selected as a system start-up file or can be
uploaded via FTP/TFTP to a server for backup. The file named
“Factory_Default_Config.cfg” contains all the system default settings
and cannot be deleted from the system. If the system is booted with
the factory default settings, the switch will also create a file named
“startup1.cfg” that contains system settings for switch initialization,
including information about the unit identifier, and MAC address for the
switch. The configuration settings from the factory defaults
configuration file are copied to this file, which is then used to boot the
switch. See "Saving or Restoring Configuration Settings" on page 78 for
more information.
Operation Code — System software that is executed after boot-up,
also known as run-time code. This code runs the switch operations and
provides the CLI and web management interfaces. See "Managing
System Files" on page 106 for more information.
Diagnostic Code — Software that is run during system boot-up, also
known as POST (Power On Self-Test).
Due to the size limit of the flash memory, the switch supports only two
operation code files. However, you can have as many diagnostic code files
and configuration files as available flash memory space allows. The switch
has a total of 32 Mbytes of flash memory for system files.
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Managing System Files
2
| Initial Switch Configuration
In the system flash memory, one file of each type must be set as the startup file. During a system boot, the diagnostic and operation code files set as
the start-up file are run, and then the start-up configuration file is loaded.
Note that configuration files should be downloaded using a file name that
reflects the contents or usage of the file settings. If you download directly
to the running-config, the system will reboot, and the settings will have to
be copied from the running-config to a permanent file.
SAVINGOR
RESTORING
CONFIGURATION
SETTINGS
Configuration commands only modify the running configuration file and are
not saved when the switch is rebooted. To save all your configuration
changes in nonvolatile storage, you must copy the running configuration
file to the start-up configuration file using the “copy” command.
New startup configuration files must have a name specified. File names on
the switch are case-sensitive, can be from 1 to 31 characters, must not
contain slashes (\ or /), and the leading letter of the file name must not be
a period (.). (Valid characters: A-Z, a-z, 0-9, “.”, “-”, “_”)
There can be more than one user-defined configuration file saved in the
switch’s flash memory, but only one is designated as the “startup” file that
is loaded when the switch boots. The copy running-config startup-config command always sets the new file as the startup file. To select a
previously saved configuration file, use the boot systemconfig:<filename> command.
The maximum number of saved configuration files depends on available
flash memory. The amount of available flash memory can be checked by
using the dir command.
To save the current configuration settings, enter the following command:
1. From the Privileged Exec mode prompt, type “copy running-config
startup-config” and press <Enter>.
2. Enter the name of the start-up file. Press <Enter>.
Console#copy running-config startup-config
Startup configuration file name []: startup
\Write to FLASH Programming.
\Write to FLASH finish.
Success.
Console#
To restore configuration settings from a backup server, enter the following
command:
1. From the Privileged Exec mode prompt, type “copy tftp startup-config”
and press <Enter>.
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| Initial Switch Configuration
Managing System Files
2. Enter the address of the TFTP server. Press <Enter>.
3. Enter the name of the startup file stored on the server. Press <Enter>.
4. Enter the name for the startup file on the switch. Press <Enter>.
Console#copy file startup-config
Console#copy tftp startup-config
TFTP server IP address: 192.168.0.4
Source configuration file name: startup-rd.cfg
Startup configuration file name [startup1.cfg]:
Success.
Console#
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Managing System Files
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S
ECTION
WEB CONFIGURATION
This section describes the basic switch features, along with a detailed
description of how to configure each feature via a web browser.
This section includes these chapters:
"Using the Web Interface" on page 83
"Basic Management Tasks" on page 101
"Interface Configuration" on page 129
"VLAN Configuration" on page 167
II
"Address Table Settings" on page 199
"Spanning Tree Algorithm" on page 207
"Rate Limit Configuration" on page 231
"Storm Control Configuration" on page 233
"Class of Service" on page 235
"Quality of Service" on page 249
"VoIP Traffic Configuration" on page 265
"Security Measures" on page 271
"Basic Administration Protocols" on page 369
"IP Configuration" on page 485
"IP Services" on page 509
"Multicast Filtering" on page 517
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S
ECTION
II
| Web Configuration
– 82 –
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3USINGTHE WEB INTERFACE
This switch provides an embedded HTTP web agent. Using a web browser
you can configure the switch and view statistics to monitor network
activity. The web agent can be accessed by any computer on the network
using a standard web browser (Internet Explorer 5.0 or above, Netscape
6.2 or above, or Mozilla Firefox 2.0.0.0 or above).
N
OTE
:
You can also use the Command Line Interface (CLI) to manage the
switch over a serial connection to the console port or via Telnet. For more
information on using the CLI, refer to "Using the Command Line Interface"
on page 551.
CONNECTINGTOTHE WEB INTERFACE
Prior to accessing the switch from a web browser, be sure you have first
performed the following tasks:
1. Configure the switch with a valid IP address, subnet mask, and default
gateway using an out-of-band serial connection, BOOTP or DHCP
protocol. (See "Setting an IP Address" on page 67.)
2. Set user names and passwords using an out-of-band serial connection.
Access to the web agent is controlled by the same user names and
passwords as the onboard configuration program. (See "Setting
Passwords" on page 66.)
3. After you enter a user name and password, you will have access to the
system configuration program.
N
OTE
:
You are allowed three attempts to enter the correct password; on
the third failed attempt the current connection is terminated.
N
OTE
:
If you log into the web interface as guest (Normal Exec level), you
can view the configuration settings or change the guest password. If you
log in as “admin” (Privileged Exec level), you can change the settings on
any page.
N
OTE
:
If the path between your management station and this switch does
not pass through any device that uses the Spanning Tree Algorithm, then
you can set the switch port attached to your management station to fast
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| Using the Web Interface
forwarding (i.e., enable Admin Edge Port) to improve the switch’s response
time to management commands issued through the web interface. See
"Configuring Interface Settings for STA" on page 217.
NAVIGATINGTHE WEB BROWSER INTERFACE
To access the web-browser interface you must first enter a user name and
password. The administrator has Read/Write access to all configuration
parameters and statistics. The default user name and password for the
administrator is “admin.”
HOME PAGE When your web browser connects with the switch’s web agent, the home
page is displayed as shown below. The home page displays the Main Menu
on the left side of the screen and System Information on the right side. The
Main Menu links are used to navigate to other menus, and display
configuration parameters and statistics.
Figure 1: Home Page
N
OTE
:
You can open a connection to the manufacturer’s web site by clicking
on the DIGISOL logo.
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| Using the Web Interface
Navigating the Web Browser Interface
CONFIGURATION
OPTIONS
Configurable parameters have a dialog box or a drop-down list. Once a
configuration change has been made on a page, be sure to click on the
Apply button to confirm the new setting. The following table summarizes
the web page configuration buttons.
Table 5: Web Page Configuration Buttons
ButtonAction
ApplySets specified values to the system.
RevertCancels specified values and restores current
values prior to pressing “Apply.”
Displays help for the selected page.
Refreshes the current page.
Displays the site map.
Logs out of the management interface.
Sends mail to the manufacturer.
Links to the manufacture’s web site.
N
OTE
:
To ensure proper screen refresh, be sure that Internet Explorer 5.x
is configured as follows: Under the menu “Tools / Internet Options /
General / Temporary Internet Files / Settings,” the setting for item “Check
for newer versions of stored pages” should be “Every visit to the page.”
PANEL DISPLAY The web agent displays an image of the switch’s ports. The Mode can be
set to display different information for the ports, including Active (i.e., up
or down), Duplex (i.e., half or full duplex), or Flow Control (i.e., with or
without flow control).
Figure 2: Front Panel Indicators
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| Using the Web Interface
Navigating the Web Browser Interface
MAIN MENU Using the onboard web agent, you can define system parameters, manage
and control the switch, and all its ports, or monitor network conditions. The
following table briefly describes the selections available from this program.
Table 6: Switch Main Menu
MenuDescriptionPage
System
GeneralProvides basic system description, including contact information101
SwitchShows the number of ports, hardware version, power status, and
firmware version numbers
IPSets IPv4 address for management interface and gateway489
Configure GlobalSets IP address of the gateway router between this device and
management stations that exist on other network segments
Configure InterfaceConfigures IP address for management access490
AddSets the IPv4 address for management access490
ShowShows the IPv4 address for management access490
CapabilityEnables support for jumbo frames;
shows the bridge extension parameters
File106
CopyAllows the transfer and copying files106
102
489
104,
105
Set StartupSets the startup file109
ShowShows the files stored in flash memory; allows deletion of files 110
Automatic Operation Code UpgradeAutomatically upgrades operation code if a newer version is
found on the server
Time115
Configure General
ManualManually sets the current time115
SNTPConfigures SNTP polling interval116
Configure Time ServerConfigures a list of SNTP servers117
Configure Time ZoneSets the local time zone for the system clock118
ConsoleSets console port connection parameters119
TelnetSets Telnet connection parameters121
CPU UtilizationDisplays information on CPU utilization122