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N8406-022A
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NEC N8406-022A User Manual

N8406-022A 1Gb Intelligent L2 Switch
Smart Panel Reference Guide
Part number: 856-126757-406-00
First edition: July 2008
express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. NEC shall not be liable for technical or editorial errors or omissions contained herein.
Microsoft®, Windows®, and Windows NT® are U.S. registered trademarks of Microsoft Corporation. SunOS™ and Solaris™ are trademarks of Sun Microsystems, Inc. in the U.S. and other countries. Cisco® is a registered trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Part number: 856-126757-406-00 First edition: July 2008
2
Contents
SmartPanel
Introduction.............................................................................................................................................................5
Additional references..............................................................................................................................................5
Typographical conventions.....................................................................................................................................5
Management Network ............................................................................................................................................6
Connecting to the switch ........................................................................................................................................6
Establishing a console connection....................................................................................................................6
Setting an IP address........................................................................................................................................7
Establishing a Telnet connection ......................................................................................................................7
Establishing an SSH connection.......................................................................................................................7
Establishing an HTTP connection.....................................................................................................................7
Accessing the switch..............................................................................................................................................7
Browser-based interface
Introduction.............................................................................................................................................................9
Requirements.........................................................................................................................................................9
Web browser setup.................................................................................................................................................9
Starting the BBI ......................................................................................................................................................9
Port Status Area..............................................................................................................................................11
Menu Area.......................................................................................................................................................1 2
Configuration Area..........................................................................................................................................12
Port Group Mapping.............................................................................................................................................13
Port Group Characteristics..............................................................................................................................13
Port Group configuration.................................................................................................................................13
Internal Port Settings............................................................................................................................................14
External Port Settings...........................................................................................................................................15
VLAN....................................................................................................................................................................16
PVID................................................................................................................................................................16
802.1Q VLAN Tagging....................................................................................................................................16
Port VLAN ID configuration.............................................................................................................................16
Non-Default Virtual LANs................................................................................................................................17
Management.........................................................................................................................................................18
Local User Administration.....................................................................................................................................19
Remote User Administration.................................................................................................................................20
Time Services.......................................................................................................................................................21
Trunking................................................................................................................................................................22
Statistical Load Distribution............................................................................................................................. 22
Built-In Fault Tolerance...................................................................................................................................22
Trunk group configuration rules ......................................................................................................................22
Link Aggregation Control Protocol ..................................................................................................................22
Trunk Group configuration ..............................................................................................................................23
Failover.................................................................................................................................................................23
Failover configuration...................................................................................................................................... 24
IGMP Snooping....................................................................................................................................................24
Boot Management................................................................................................................................................25
Command Line Interface
Introduction...........................................................................................................................................................27
Main Menu ......................................................................................................................................................27
Menu summary ...............................................................................................................................................27
Global commands...........................................................................................................................................28
Command line history and editing...................................................................................................................29
Command line interface shortcuts...................................................................................................................30
Command stacking .........................................................................................................................................30
Command abbreviation...................................................................................................................................30
Tab completion................................................................................................................................................30
Information Menu..................................................................................................................................................31
Introduction .....................................................................................................................................................31
Menu overview................................................................................................................................................31
System Information Menu...............................................................................................................................32
SNMPv3 Information Menu.............................................................................................................................32
System information .........................................................................................................................................37
SmartPanel 3
Show last 100 syslog messages.....................................................................................................................38
System user information .................................................................................................................................38
Layer 2 information .........................................................................................................................................39
FDB information menu....................................................................................................................................40
Trunk group information..................................................................................................................................41
Layer 3 information .........................................................................................................................................41
ARP information..............................................................................................................................................42
IP information..................................................................................................................................................43
IGMP multicast group information...................................................................................................................43
IGMP multicast router port information ...........................................................................................................43
Link status information....................................................................................................................................44
Port information...............................................................................................................................................44
Group information ...........................................................................................................................................45
Information dump............................................................................................................................................45
Statistics Menu.....................................................................................................................................................46
Introduction .....................................................................................................................................................46
Port Statistics Menu........................................................................................................................................47
Layer 2 statistics Menu ...................................................................................................................................51
Layer 3 statistics Menu ...................................................................................................................................52
Management Processor statistics...................................................................................................................57
NTP statistics..................................................................................................................................................59
Statistics dump................................................................................................................................................59
Configuration Menu..............................................................................................................................................60
Introduction .....................................................................................................................................................60
System configuration.......................................................................................................................................62
Port configuration............................................................................................................................................78
Spare Ports Group configuration.....................................................................................................................78
Group configuration.........................................................................................................................................79
Configuration Dump........................................................................................................................................80
Saving the active switch configuration............................................................................................................80
Restoring the active switch configuration........................................................................................................80
Operations Menu..................................................................................................................................................81
Introduction .....................................................................................................................................................81
Menu information ............................................................................................................................................81
Boot Options Menu...............................................................................................................................................82
Introduction .....................................................................................................................................................82
Menu information ............................................................................................................................................82
Maintenance Menu...............................................................................................................................................86
Introduction .....................................................................................................................................................86
Menu information ............................................................................................................................................86
SmartPanel 4

SmartPanel

Introduction

The 1Gb Intelligent L2 Switch provides two switch modes: The conventional L2 switch mode, and SmartPanel mode. The switch can store up to two different software image, called image1 and image2. Normally, the conventional L2 switch software image is stored in image1, and the SmartPanel software is stored in image2. You can select which software image (image1 or image2) you want to run in switch memory. By default, the switch software is loaded from image1. To run the SmartPanel software, you need to change a software image to image2 and reboot the switch. See additional references for configuration to select a software image.
This guide explains how to configure the switch in running the SmartPanel software. The SmartPanel pr ovides a simple Ethernet interface option for connecting to the network infrastructure. The number and type of configuration options on the SmartPanel are restricted to reduce the initial setup complexit y and to minimize the impact on upstream networking devices.

Additional references

Additional information about installing and configuring the switch is availa ble in the following guides, which are attached in this product.
• N8406-022A 1Gb Intelligent L2 Switch User’s Guide
• N8406-022A 1Gb Intelligent L2 Switch Application Guide
• N8406-022A 1Gb Intelligent L2 Switch Command Reference Guide (AOS)
• N8406-022A 1Gb Intelligent L2 Switch Command Reference Guide (ISCLI)
• N8406-022A 1Gb Intelligent L2 Switch Browser-based Interface Reference Guide

Typographical conventions

The following table describes the typographic styles used in this guide:
Table 1 Typographic conventions
Typeface or symbol Meaning Example
AaBbCc123
AaBbCc123
<AaBbCc123>
[ ]
This type depicts onscreen computer output and prompts. This type displays in command examples and shows text that must be typed in exactly as shown. This italicized type displays in command examples as a parameter placeholder. Replace the indicated text with the appropriate real name or value when using the command. Do not type the brackets. This also shows guide titles, special terms, or words to be emphasized. Command items shown inside brackets are optional and can be used or excluded as the situation demands. Do not type the brackets.
Main#
Main# sys
To establish a Telnet session, enter:
host# telnet <IP address>
Read the user guide thoroughly.
host# ls [-a]
SmartPanel 5

Management Network

The 1Gb Intelligent L2 Switch is a Switch Module within the Blade Enclosure. The Blade Enclosur e includes an Enclosure Manager Card which manages the modules and CPU Blades in the enclosure.
The 1Gb Intelligent L2 Switch communicates with the Enclosure Manager Card through its internal management port (port 19). The factory default settings permit management and control access to the switch through the 10/100 Mbps Ethernet port on the Blade Enclosure, or the built-in console port.
The switch management network has the following characteristics:
• Port 19 — Management port 19 has the following configuration:
• Flow control: both
• Auto-negotiation
• Untagged
• Port VLAN ID (PVID): 4095
• VLAN 4095 — Management VLAN 4095 isolates management traffic within the switch. VLAN 4095 contains
only one member port (port 19). No other ports can be members of VLAN 4095.
• Interface 256 — Management interface 256 is associated with VLAN 4095. No other interfaces can be associated with VLAN 4095. The IP address of the management interface is assigned through Dynamic Host Control Protocol (DHCP).
• Gateway 4 — This gateway is the default gateway for the management interface.

Connecting to the switch

You can access the command line interface in one of the following ways:
• Using a console connection via the console port
• Using a Telnet connection over the network
• Using a Secure Shell (SSH) connection to securely log in over a network
• Using a HTTP connection over the network

Establishing a console connection

To establish a console connection with the switch, you need:
• A null modem cable with a female DB-9 connector (See the User’s Guide for more information.)
• An ASCII terminal or a computer running terminal emulation software set to the parameters shown in the table
below
Table 2 Console configuration parameters
Parameter Value Baud Rate 9600 Data Bits 8
Parity None Stop Bits 1 Flow Control None
To establish a console connection with the switch:
1. Connect the terminal to the console port using the null modem cable.
2. Power on the terminal.
3. Press the Enter key a few times on the terminal to establish the connection.
4. You will be required to enter a password for access to the switch. (For more information, see the “Accessing the switch” section later in this chapter.)
SmartPanel 6

Setting an IP address

To access the switch via a Telnet, an SSH connection, or an HTTP connection, you need to have an Internet Protocol (IP) address set for the switch. You can assign the IP address only to the management interface (interface
256), associated with port 19. The management interface requests its IP address from a Dynamic Host Control
Protocol (DHCP) server on the Enclosure Manager Card. See the User’s Guide of the Enclosure Manager Card for configuration to assign the IP address to the switch modules.
NOTE: You can assign the IP address only on the management port 19.

Establishing a Telnet connection

A Telnet connection offers the convenience of accessing the switch from any workstation connected to the network. Telnet provides the same options for user, operator, and administrator access as those available through the console port. By default, Telnet is enabled on the switch. The switch supports four concurrent Telnet connections.
Once the IP parameters are configured, you can access the CLI using a Telnet connection. To establish a Telnet connection with the switch, run the Telnet program on the workstation and enter the telnet command, followed by the switch IP address:
telnet <1Gb Intelligent L2 Switch IP address>
You will then be prompted to enter a password. The password entered determines the access level: administrator, operator, or user. See the “Accessing the switch” section later in this chapter for description of default passwords.

Establishing an SSH connection

Although a remote network administrator can manage the configuration of a switch via Telnet, this method does not provide a secure connection. The Secure Shell (SSH) protocol enables you to securely lo g into the switch over the network.
As a secure alternative to using Telnet to manage switch configuration, SSH ensures that all data sent over the network is encrypted and secure. In order to use SSH, you must first configure it on the switch. See the “Secure Shell Server configuration” section in the “Configuration Menu” chapter for information on how to configure SSH.

Establishing an HTTP connection

By default, HTTP is enabled on the switch. You can configure the switch using the Web browser. For more information, see the “Browser-based interface” chapter.

Accessing the switch

To enable better switch management and user accountability, the switch provides different levels or classes of user access. Levels of access to the CLI and Web management functions and screens increase as needed to perform various switch management tasks. The three levels of access are:
• User—User interaction with the switch is completely passive; nothing can be changed on the switch. Users may display information that has no security or privacy implications, such as switch statistics and current operational state information.
• Operator—Operators can only effect temporary changes on the switch. These changes will be lost when the switch is rebooted/reset. Operators have access to the switch management features used for daily switch operations. Because any changes an operator makes are undone by a reset of the switch, operators cannot severely impact switch operation, but do have access to the Maintenance menu.
• Administrator—Only administrators can make permanent changes to the switch configuration, changes that are persistent across a reboot/reset of the switch. Administrators can access switch functions to configure and troubleshoot problems on the switch. Because administrators can also make temporary (operator-level) changes as well, they must be aware of the interactions between temporary and permanent changes.
Access to switch functions is controlled through the use of unique usernames and passwords. Once you are connected to the switch via the local console, Telnet, or SSH, you are prompted to enter a password. The password entered determines the access level. The default user names/password for each access level is listed in the following table. Once you are connected to the switch via HTTP, you are prompted to enter a user account and password.
NOTE: It is recommended that you change default switch passwords after initia l configuration and as regularly as required under your network security policies. For more information, see the “Setting passwords” section in the “First-time configuration” chapter.
SmartPanel 7
Table 3 User access levels
User account Description and tasks performed
user The user has no direct responsibility for switch management. He or she can view all
switch status information and statistics, but cannot make any configuration changes to the switch. The user account is enabled by default, and the default password is user.
oper The operator manages all functions of the switch. The operator can reset ports or the
entire switch. By default, the operator account is disabled and has no password.
admin The super user administrator has complete access to all menus, information, and
configuration commands on the switch, including the ability to change both the user and administrator passwords. The admin account is enabled by default, and the
NOTE: With the exception of the admin user, setting the password to an empty value can disab le access to each user level.
default password is admin.
SmartPanel 8

Browser-based interface

Introduction

This chapter explains how to access the switch browser-based interface (BBI) for the SmartPanel and configure the switch.

Requirements

To use the browser-based interface, you need the following:
• PC or workstation with network access to the switch
• Frame-capable Web-browser software, such as the following:
• Netscape Navigator 4.7x or higher
• Internet Explorer 6.0x or higher
• JavaScript enabled in your Web browser

Web browser setup

Most modern Web browsers work with frames and JavaScript by default, and require no addition al set up. Ho wever, you should check your Web browser’s features and configuration to be sure frames and JavaScript are enabled.
NOTE: JavaScript is not the same as Java™. Be sure that JavaScript is enabled in your Web browser.

Starting the BBI

When the switch and browser setup is complete, follow these steps to launch the BBI:
1. Start your Web browser.
2. Enter the switch IP interface address in the Web browser Uniform Resource Locator (URL) field. For example, if the switch IP interface has a network IP address of 192.168.3.70. Using Internet Explorer, you
could enter the following (for secure BBI access, use https://).
If you do not use the default TCP port number (80) for BBI access, you can include the port number when you enter the IP address:
Browser-based interface 9
If the switch IP interface address has a name on your local domain name server, you can enter the name instead. Using Internet Explorer, you can enter the following:
3. Log in to the switch. If your switch and browser are properly configured, you will be asked to enter a password.
Enter the account name and password for the switch.
4. Allow the BBI Dashboard page to load. When the proper account name and password combination is entered, the BBI Port Group Mapping page is
displayed in the browser viewing area.
NOTE: There may be a slight delay while the Port Group Mapping page is initial izing. You should not stop the browser while loading is in progress.
Browser-based interface 10

Port Status Area

Menu Area
There are three main regions on the screen.
• The Port Status Area is used to view port status. Click a port icon to view details.
• The Menu Area is used to select particular items or features to act upon.
• The Configuration Area is used to configure selected items.
Port Status Area
The Status Area contains port icons that display status information about each port. Click a port icon to display detailed information about the port.
A color box indicates the Port Group in which each port resides.
Table 4 Link status
Color Description
Green Link up White No link Gray Disabled
Configuration Area
Browser-based interface 11

Menu Area

The Menu Area is used for selecting a particular feature to act upon. Configuration forms for the selected item appear in the Configuration Window.
The Menu Area contains a tree of feature folders and names.
Displays I/O bay number
Click to expand or contact
Click on System Settings to open it and reveal its contents. Click it again to close it. Click on any feature to load the configuration form in the Configuration Area.
Command Buttons
The following general commands are available at the top of the Menu Area.
Table 5 Menu Area command buttons
Command Description Help Opens a new Web-browser window for displaying the basic online help information. Close
Dump Writes current switch configuration to the screen. Configuration information is displayed with
Logout Logs off the switch and exits the BBI.

Configuration Area

Use the Configuration Area to configure SmartPanel settings. When a feature is selected from the Menu Area, a configuration form is displayed in the Configuration Area. T he
exact nature of the form depends on the type of information available. Configuration forms display information and allow you to make configuration change to SmartPanel parameters.
Click to select
the help browser when finished.
parameters that have been changed from default values.
Command Buttons
The following general commands are available at the bottom of the Configuration Area.
Table 6 Configuration Area command buttons
Command Description Apply Pending configuration changes do not take effect until you select the Apply command. Once
Save Writes applied configuration changes to non-volatile flash memory on the switch (with the
Revert Apply Removes pending configuration changes between save commands. Use this command to
applied, all changes take effect on the switch immediately. If you do not save the changes, however, they will be lost the next time the switch is rebooted.
option of not overlaying the current backup).
restore configuration parameters set since last save command.
Browser-based interface 12

Port Group Mapping

SmartPanel ports can be combined into Port Groups. Up to five Port Groups are available in the SmartPanel. A Spare Ports Group is available for unused ports.
VLANs and Link Aggregation Groups (trunks) are configured automatically for each Port Group. No network loops are allowed in the configuration. All external ports in the Port Group form a trunk group (static trunk or Link Aggregation Group).

Port Group Characteristics

SmartPanel Port Groups must have the following characteristics.
• Each Port Group must contain at least one external port (20-24) and one internal server blade port (1-16).
• All external ports in a Port Group must have the same configuration.
• Each port in the Port Group is a member of a unique, untagged VLAN.
• Tagged VLANs (1-4094) can be assigned to each Port Group. Tagged VLANs cannot be configured across
multiple Port Groups.
• All external ports in the Port Group form a trunk group.
NOTE: Cross-connect ports (17-18) are not available in the SmartPanel.

Port Group configuration

On the BBI, choose Port Group Mapping to select the Port Group for each of the external ports and server blade ports. Click Apply to make the changes active. Click Save to write the configuration to flash memory.
Browser-based interface 13
In this example, Port 1-4, 20-21 are assigned to Group1, and Port 5-8, 22-23 are assigned to Group2. The others are assigned to Spare Ports Group.

Internal Port Settings

On the BBI, choose Internal Port Settings to enable or disable the server blade port.
Browser-based interface 14

External Port Settings

On the BBI, choose External Port Settings to configure the external port.
The following table describes the external port configuration.
Table 7 External Port Settings
Command Description Port Name Sets a name for the port. The assigned port name appears next to the port
Switch Port State Enables or disables the port. Link configuration Sets the link speed. The choices include:
Flow Control Sets the flow control. The choices include:
number on some information and statistics screens.
• Auto Negotiation Speed and Duplex (default)
• 1Gbps / Full Duplex
• 100Mbps / Full Duplex
• 10Mbps / Full Duplex
• Rx: Receive flow control
• Tx: Transmit flow control
• both: Receive and transmit flow control (default)
• none: No flow control
Browser-based interface 15

VLAN

Virtual LANs (VLANs) are commonly used to split up groups of network users into manageable broadcast domains, to create logical segmentation of workgroups, and to enforce security policies among logic al segments. This switch supports up to 1,000 VLANs per switch. Even though the maximum number of VLANs supported at any given time is 1,000, each can be identified with any number between 1 and 4095. VLAN 4095 is used by the management network, which includes the management port 19. VLAN 4095 configuration cannot be modified.

PVID

Each Port Group has a configurable default VLAN number, known as its PVID (Port VLAN ID). All ports are set as untagged members of PVID. By default, all ports except port 19 are configured as Group1. The PVID of Group1 is 1.
The unique value of PVID is assigned to the Port Group, which contains at least one external port and one internal server blade port. For the configuration, see the “Port VLAN ID configuration” section later in this chapter.
NOTE: Spare Ports Group for unused ports is assigned a PVID.

802.1Q VLAN Tagging

802.1Q VLAN tagging provides standards-based VLAN support for Ethernet systems. This standard permits
multiple VLANs to be transmitted over a single Ethernet connection. Tagging places the VLAN identifier in the frame header of a packet, allowing each port to belo ng to multiple VLANs.
For the configuration to add the VLAN ID to the Port Group, see the “Non-Default Virtual LANs” section later in this chapter.
NOTE: The SmartPanel does not permit configuration of tagged VLANs across multiple Ports Groups.

Port VLAN ID configuration

Assign at lease one external port and one internal blade server port to the Port Group to use it and assign a uniqu e value of PVID. On the BBI, choose System settings > Uplink/Group to change the PVID. Edit the value of the following Port VLAN ID. The value of unused Port Group is 0.
Browser-based interface 16

Non-Default Virtual LANs

On the BBI, choose Non-Default Virtual LANs to create VLANs and assign them to Port Groups. The non-default VLAN ID is placed in the frame header of a packet in forwatding from the port.
The following describes the steps to add VLAN ID.
1. Click Add VLAN to configure a new VLAN.
2. Enter a VLAN number and click OK.
The following is displayed.
Browser-based interface 17
3. Select the corresponding radio button to assign the VLAN to a Port Group.
4. Click Apply to make the changes active.

Management

On the BBI, choose System Settings > Management to configure SNMP System Settings and System Log Server Settings.
The following table describes the management configuration.
Table 8 Management
Command Description SNMP System Settings System Name Configures the name for the system. The name can have a maximum of 64
System Contact Configures the name of the system contact. The contact can have a maximum
System Location Configures the name of the system location. The location can have a maximum
System Log Server Settings IP Address of Primary Server Sets the IP address of the primary syslog server. Severity of Primary Server This option sets the severity level of the primary syslog server displayed. The
Facility of Primary Server This option sets the facility level of the primary syslog server displayed. The
IP Address of Secondary Server Sets the IP address of the secondary syslog server. Severity of Secondary Server This option sets the severity level of the secondary syslog server displayed.
characters.
of 64 characters.
of 64 characters.
default is 7, which means log all the seven severity levels.
default is 0.
The default is 7, which means, log all seven severity levels.
Browser-based interface 18
Table 8 Management
Command Description Facility of Secondary Server This option sets the facility level of the secondary syslog server displayed. The

Local User Administration

On the BBI, choose System Settings > Local User Administration to configure the user.
default is 0.
The following table describes the user configuration.
Table 9 Local User Administration
Command Description Username Defines the user name of maximum eight characters.
Password Sets the user password of up to 128 characters maximum. User Type Sets the Class-of-Service to define the user’s authority level. Enabled Enables or disables the user. Eject user Eject the specified user to access the switch.
Browser-based interface 19

Remote User Administration

On the BBI, choose System Settings > Remote User Administration to configure the RADIUS server or the TACACS+ server.
The following table describes the configuration.
Table 10 Remote User Administration
Command Description Radius Radius disable/enable Enables or disables the Radius server.
Port Configures the number of the UDP port to be configured, between 1500 - 3000.
The default is 1645. Radius Primary Server Configures the primary Radius server address. Radius Secret for Primary Server Defines the shared secret (up to 32 characters) between the switch and the
RADIUS server(s). Radius Secondary Server Configures the secondary Radius server address. Radius Secret for Secondary Server Defines the secondary shared secret (up to 32 characters) between the switch
and the Radius server(s). Tacacs+ Tacacs+ disable/enable Enables or disables the Tacacs+ server. Port Configures the number of the TCP port to be configured, between 1 and
65000. The default is 49. Tacacs+ Primary Server Configures the primary TACACS+ server address. Tacacs+ Secret for Primary Server Configures the shared secret (up to 32 characters) between the switch and the
TACACS+ server. Tacacs+ Secondary Server Configures the secondary TACACS+ server address. Tacacs+ Secret for Secondary Server Configures the secondary shared secret (up to 32 characters) between the
switch and the TACACS+ server.
Browser-based interface 20

Time Services

On the BBI, choose System Settings > Time Services to configure the NTP server.
The following table describes the configuration.
Table 11 Time Services
Command Description General Settings
Current Date Configures the system date. Current Time Configures the system time using a 24-hour clock format. Timezone Location Configures the time zone where the switch resides. You are prompted to select
Daylight Savings Disables or enables daylight savings time in the system clock. When enabled,
NTP Settings Time Services Enables or disables the NTP synchronization service. Update Internal (min) Specifies the interval, that is, how often, in minutes (1-44640), to
Primary Server Configures the IP address of the primary NTP server to which you want to
Secondary Server Configures the IP address of the secondary NTP server to which you want to
your location (continent, country, region) by the timezone wizard. Once a
region is selected, the switch updates the time to reflect local changes to
Daylight Savings Time, etc.
the switch will add an extra hour to the system clock so that it is consistent with
the local clock. By default, this option is disabled.
re-synchronize the switch clock with the NTP server.
synchronize the switch clock.
synchronize the switch clock.
Browser-based interface 21

Trunking

Trunk groups provide super-bandwidth, multi-link connections between SmartPane l or other trunk-capable devices. A trunk group is a group of ports that act together, combining their bandwidth to create a single, larger virtual link.
SmartPanel trunk groups are static link aggregation groups that are compatible with Cisco’s EtherChan nel technology.
The SmartPanel is statically configured to place each Port Group into a separate trunk group.
NOTE: Because all ports in a Port Group belong to the same trunk group, individual external ports cannot be used as a regular 802.3 link. Do not plug a workstation directly into one of the SmartPanel’s external ports, unless that is the only device plugged into the ports.
When using port trunk groups between the SmartPanel and a switch, you can cr eate a virtual link, operating at up to 5 Gigabits per second, depending on how many physical ports are combined.

Statistical Load Distribution

Network traffic is statistically distributed between ports in a trunk group. The SmartPanel uses the source and destination IP address information present in each transmitted IP frame to determine load distribution. If the frame is not an IP frame, then Layer 2 MAC addresses are used.
Each packet’s particular combination of source and destination addresses results in selecting one li ne in the trunk group for data transmission. If there are enough devices feeding the trunk lines, then traffic distribution becomes relatively even.

Built-In Fault Tolerance

Since trunk groups are comprised of multiple physical links, each trunk group is inhere ntl y fault tolerant. As long as one connection is available, the trunk remains active.
Statistical load balancing is maintained whenever a port in a trunk group is lost or returned to service.

Trunk group configuration rules

The trunking feature operates according to specific configuration rules. When working with trunks, consider the following rules that determine how a trunk group reacts in any network topology.
• All trunks must originate from one device, and lead to one destination device.
• Trunking from third-party devices must comply with Cisco® EtherChannel® technology.
• All external ports in a Port Group must have the same configuration.
• Only external ports in a Port Group are trunked. For Port Group configuration, see the “Port Group
configuration”.

Link Aggregation Control Protocol

Link Aggregation Control Protocol (LACP) is an IEEE 802.3ad standard for grouping seve ral physical ports into one logical port (known as a dynamic trunk group or Link Aggregation Group) with any device that supports the standard. Please refer to IEEE 802.3ad-2002 for a full description of the standard.
The 802.3ad standard allows standard Ethernet links to form a singl e Layer 2 link using the Link Aggregation Control Protocol (LACP). Link aggregation is a method of grouping p hysical link segments of the same media type and speed in full duplex, and treating them as if they were part of a single, logical link segment. If a link in a LACP trunk group fails, traffic is reassigned dynamically to the remaining link/s of the dynamic trunk group.
Browser-based interface 22

Trunk Group configuration

On the BBI, choose System Settings > Uplink/Group to enable or disable the Link Aggregation Control Protocol. When enabled, the external ports are configured as a LACP trunk group. When disabled, they are configured as a static trunk group. The default is disabled.

Failover

The primary application for Failover is to support Network Adapter Teaming. With Network Adapter Teaming, the NICs on each server all share the same IP address, and are configured into a team. One NIC is the primary link, and the other is a standby link.
Failover is enabled by default. You can enable or disable Failover on a Port Group. When enabled, F ailover works as follows.
• If some (or all) of the links fail in the failover trigger, the SmartPanel disables all internal ports of the Port Group. When the internal ports are disabled, it causes the NIC team on the affected server blade to failover from the primary to the backup NIC. This process is called a failover event.
• When the appropriate links return to service, the SmartPanel enables the internal ports of the Port Group. This causes the NIC team on the affected server blades to fail back to the primary SmartPanel (unless Auto­Fallback is disabled on the NIC team). The backup processes traffic until the primary’s internal l inks come up, which takes up to five seconds.
The failover limit lets you specify the minimum number of operational links required within the failover trigger before the trigger initiates a failover event. For example, if the limit is four, a failover event occurs when the number of operational links in the trigger is four or fewer. When you set the limit to all, the SmartPanel triggers a failover event only when no links in the trigger are operational. The default is all.
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Failover configuration

On the BBI, choose System Settings > Uplink/Group to configure the Switch Failover and Number of Links to Trigger Failover.

IGMP Snooping

IGMP Snooping allows the SmartPanel to forward multicast traffic only to those ports that request it. IGMP Snooping prevents multicast traffic from being flooded to all ports. The SmartPanel learns which server hosts are interested in receiving multicast traffic, and forwards it only to ports connected to those servers.
On the BBI, choose System Settings > IGMP Snooping to enable IGMP Snooping. The default is disabled.
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Boot Management

On the BBI, choose System Settings > Boot Management to backup or restore the switch configuration, update the switch software image, or get dump file.
The following table describes the configuration.
Table 12 Boot Management
Command Description Reboot the Module button Reboots the switch.
Next boot config block Selects the Configuration Block file (active, backup or factory) that will run after
Image to boot Selects which software image (image1 or image2) you want to run in switch
Image to transfer Selects a software image to replace with the downloaded software. Current Image Information Image 1 Displays information about the current Image 1 software. When NormalPanel is
Image 2 Displays information about the current Image 2 software. When SmartPanel is
Boot kernel Displays the version number of the current Boot software. Update Image/Cfg Method to use for transfer Select the method to use for transfer (TFTP, FTP or HTTP). HTTP is available
Settings for using FTP or TFTP Server Server Address Enter the IP address of the TFTP or FTP server from which you will transfer the
Remote File Name Enter the name of the file on a TFTP or FTP server that contains the file you
Button Get Image Starts download of the software image file indicated in Remote File Name field
Put Image Starts upload of the software image file indicated in Remote File Name field
Get Cfg Downloads a previously saved switch Configuration Block file indicated in
Put Cfg Uploads the switch’s active configuration to the script configuration file
the next reboot.
memory for the next reboot.
displayed, the conventional Layer 2 switch software is stored in Image1.
displayed, the SmartPanel software is stored in Image2.
only for Get Image.
file.
want to transfer.
from the specified TFTP or FTP server.
from the specified TFTP or FTP server.
Remote File Name from the specified the TFTP or FTP server. The active configuration will be replaced with the commands found in the downloaded configuration file. The file can contain a full switch configuration or a partial switch configuration. The new configuration is not activated until the apply command is used. If the apply command is found in the configuration script file loaded using this command, the apply action is performed automatically.
specified in Remote File Name. The file is placed on the TFTP or FTP server.
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Table 12 Boot Management
Command Description Put TS Dump Uploads the TS (tech support) dump file to the TFTP or FTP server specified in
Remote File Name.
Put Crash Dump Uploads the core (PANIC) dump file to the TFTP or FTP server specified in
Remote Filename.
Clear Crash Dump Deletes the core dump in flash memory.
IMPORTANT: When the switch software is changed (NormalPanel or SmartPanel) and the switch is rebooted, the switch configuration is removed and the switch runs factory configuration block. Backup the switch configuration if needed.
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Command Line Interface

Introduction

The CLI is used for viewing switch information and statistics. In addition, the administrator can use the CLI for performing all levels of switch configuration.
To make the CLI easy to use, the various commands have been logically grouped into a series of menus and submenus. Each menu displays a list of commands and/or submenus that are available, along with a summary of what each command will do. Below each menu is a prompt where you can enter any comm and appropriate to the current menu.
This chapter describes the Main Menu commands, and provides a list of commands and shortcuts that are commonly available from all the menus within the CLI.

Main Menu

The Main Menu displays after a successful connection and login. The follo wing ta ble shows the Main Menu for the administrator login. Some features are not available under the user login.
[Main Menu] info - Information Menu stats - Statistics Menu cfg - Configuration Menu oper - Operations Command Menu boot - Boot Options Menu maint - Maintenance Menu diff - Show pending config changes [global command] apply - Apply pending config changes [global command] save - Save updated config to FLASH [global command] revert - Revert pending or applied changes [global command]
exit - Exit [global command, always available]

Menu summary

The Main Menu displays the following submenus:
• Information Menu The Information Menu provides submenus for displaying information about the current status of the switch.
• Statistics Menu This menu provides submenus for displaying switch performance statistics.
• Configuration Menu This menu is available only from an administrator login. It includes subme nus for configuring every aspect of
the switch. Changes to configuration are not active until explicitly applied. Changes can be saved to non­volatile memory (NVRAM).
• Operations Command Menu Operations-level commands are used for making immediate and temporary changes to switch configurati on.
This menu is used for bringing ports temporarily in and out of service. This menu is available only from an administrator and operator login.
• Boot Options Menu The Boot Options Menu is available only from an administrator login. This menu is used for upgrading switch
software, selecting configuration blocks, and for resetting the switch when necessary. This menu is also used to set the switch back to factory settings.
• Maintenance Menu This menu is used for debugging purposes, enabling you to generate a tec hnical support dump of the critical
state information in the switch, and to clear entries in the Forwarding Database and the Address Resolution Protocol (ARP). This menu is available only from an administrator and operator login.
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