Cisco 10000 Series Router Line Card Configuration Guide
1-Port Gigabit Ethernet Half-Height Line Card Configuration
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1-Port Gigabit Ethernet Half-Height Line Card Configuration

Table Of Contents

1-Port Gigabit Ethernet Half-Height Line Card Configuration

Software Support

Checking Hardware and Software Compatibility

Default Values

Interface Syntax

Configuring an Interface

Configuration Commands

Specifying Auto-Negotiation

Assigning a MAC Address

Setting and Changing Loopback Mode


1-Port Gigabit Ethernet Half-Height Line Card Configuration


This chapter describes procedures for configuring the Cisco 10000 series 1-Port Gigabit Ethernet Half-Height line card, hereafter known as the 1-Port Gigabit Ethernet Half-Height line card.

The 1-Port Gigabit Ethernet Half-Height line card contains a single Gigabit Ethernet port that provides a trunk uplink to switches and core routers.

This chapter contains the following sections:

Software Support

Default Values

Interface Syntax

Configuring an Interface

Configuration Commands


Note For information about installing half-height line cards in subslot locations, see the Cisco 10000 Series Router Line Card Hardware Installation Guide.


Software Support

Table 10-1 shows the minimum Cisco IOS release on each release train that supports the 1-Port Gigabit Ethernet Half-Height line card.

Table 10-1 1-Port Gigabit Ethernet Half-Height Line Card Software Support 

Required PRE
Minimum Cisco IOS Releases

PRE1

Cisco IOS Release 12.0(23)S and later releases of Cisco IOS 12.0S

PRE2

Cisco IOS Release 12.2(15)BX and later releases of Cisco IOS 12.2BX
Cisco IOS Release12.3(7)XI and later releases of Cisco IOS 12.3 XI
Cisco IOS Release 12.2(28)SB and later releases of Cisco IOS 12.2SB

PRE3

Cisco IOS Release 12.2(31)SB2 and later releases of Cisco IOS 12.2SB


Checking Hardware and Software Compatibility

The PRE installed in the Cisco 10000 series router chassis must support the Cisco IOS software running on the router. Use the show version command to check the PRE version installed.

To see if a feature is supported by a Cisco IOS release, to locate the software document for that feature, or to check the minimum software requirements of Cisco IOS software with the hardware installed on your router, Cisco maintains the Software Advisor tool on Cisco.com at http://www.cisco.com/cgi-bin/Support/CompNav/Index.pl

This tool does not verify whether line cards within a system are compatible, but does provide the minimum Cisco IOS requirements for individual hardware line cards, modules, or options.

You must be a registered user on Cisco.com to access this tool.

Default Values

Table 10-2 lists default values for the1-Port Gigabit Ethernet Half-Height line card. This table also includes the command used for modifying a default value and indicates if a value needs to be the same (or opposite) on the remote end of the connection.

Table 10-2 1-Port Gigabit Ethernet Half-Height Line Card Defaults

Command Name
Default Setting
Command Syntax
Remote Side Setting

auto-negotiation

Enabled

[no] negotiation auto

Same

mtu (maximum transmission unit)

1500 to 4470 (full-height)

1500 to 9180 (half-height)

mtu size

Same


Interface Syntax

To specify an interface number in a configuration command, use the syntax in Table 10-3 to identify interfaces on the 1-Port Gigabit Ethernet Half-Height line card.

Table 10-3 1-Port Gigabit Ethernet Half-Height Interface Syntax

Slot
Subslot
Port

1 to 8/

0 or 1/

0


The following example shows the syntax for configuring a 1-Port Gigabit Ethernet Half-Height line card in slot 1:

Router(config)# interface GigabitEthernet 1/0/0 
Router(config-if)#

Configuring an Interface

Use the following procedure to create a basic configuration (enabling an interface and specifying IP routing) for a 1-Port Gigabit Ethernet Half-Height line card interface. Be prepared with the information you need, such as the interface IP address.


Step 1 At the global configuration prompt, specify the new interface to configure by entering the interface command.

Router(config)# interface GigabitEthernet 1/0/0

Step 2 Assign an IP address and subnet mask to the interface using the ip address configuration subcommand, as in the following example:

Router(config-if)# ip address 192.168.172.12 255.255.255.0

Step 3 If necessary, modify the 1-Port Gigabit Ethernet Half-Height line card line card configuration or that of the remote device to ensure that, where appropriate, they use the same settings. For more information, refer to the Remote Side Setting column in Table 10-2.

Step 4 Add any other configuration subcommands required for the enabling of routing protocols and adjust the interface characteristics.

Step 5 Enter the no shutdown command to enable the interface.

Router(config-if)# no shutdown

Step 6 When you have included all of the configuration subcommands to complete the configuration, enter Ctrl-Z to exit configuration mode.

Step 7 Write the new configuration to memory.

Router# copy running-config startup-config

When the configuration is stored, the system displays an OK message.


After you complete the configuration, you can check the configuration using the show interface GigabitEthernet slot/subslot/port command.

Configuration Commands

This section lists some of the commands that you can use to further customize your 1-Port Gigabit Ethernet Half-Height line card configuration. The commands described in this section are for:

Specifying Auto-Negotiation

Assigning a MAC Address

Setting and Changing Loopback Mode

Specifying Auto-Negotiation

To enable auto-negotiation, enter the negotiation auto command.

negotiation auto
[no] negotiation auto

The default configuration is auto-negotiation enabled.

Use the no form of the command to disable negotiation.


Note Both sides must be enabled for auto-negotiation, or the link does not come up.


In the following example, negotiation is disabled:

Router(config)# interface GigabitEthernet 1/0/0
Router(config-if)# no negotiation auto

Assigning a MAC Address

To assign a specific MAC address to a 1-Port Gigabit Ethernet Half-Height line card interface, use the mac-address command:

mac-address address
[no] mac-address address

Where address assigns a user-defined MAC address to a Gigabit Ethernet interface. The MAC address takes the form xxxx.xxxx.xxxx, where xxxx represents a 2-byte hexadecimal value.


Tip Use the mac-address command to preserve a MAC address when you move a card to a new slot or chassis. You may want to preserve the MAC address if you have an access list that refers to it. If you use this command, you should change the address on the original slot so that you do not have two slots with the same address.


Use no mac-address to restore the default MAC address.

Use the show interfaces GigabitEthernet slot/subslot/port command to see the MAC address.

In the following example, a new MAC address is assigned:

Router(config)# interface GigabitEthernet 1/0/0
router(config-if)# mac-address 6000.0001.0003

Setting and Changing Loopback Mode

To set the loopback mode on a 1-Port Gigabit Ethernet Half-Height line card interface, use the loopback command in interface configuration mode.

loopback [internal | external]
[no] loopback [internal | external]

Where:

external runs a loopback that requires a loopback connector.

internal runs a loopback at the MAC controller.

Use the no form of the command to stop the loopback.

For more information about this command, refer to the Cisco 10000 Series Internet Router Troubleshooting Guide.

In the following example, an internal loopback mode is defined for a 1-Port Gigabit Ethernet Half-Height line card interface:

router(config)# interface GigabitEthernet 1/0/0
router(config-if)# loopback internal