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Configuring the Gigabit Ethernet Line Card

Configuring the Gigabit Ethernet Line Card

This chapter describes the procedure for configuring a Cisco 10000 ESR gigabit Ethernet (GE) line card. Figure 3-1 shows the GE line card.


Figure 3-1:
Gigabit Ethernet Line Card


GE Line Card Default Values

Table 3-1 lists default values for the GE line card. The commands marked with an asterisk (*) are described in the Cisco IOS Command Reference. The other commands are among those described in this chapter.

The table 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 3-1: GE Line Card Defaults
Command Name Default Setting Command Syntax Remote Side Setting

auto-negotiation

Enabled

[no] negotiation auto

Same

mtu (maximum transmission unit) *

1500

mtu size

Same

Gigabit Ethernet Line Card Syntax

To specify an interface number in a configuration command, use the syntax in Table 3-2 to identify interfaces on the GE line card.


Table 3-2: Gigabit Ethernet Interface Syntax
Type of Interface
Slot
Subslot
Port

Gigabit Ethernet

1 to 8/

0/

0

The following example shows the syntax for configuring a GE 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) of a GE 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 GE 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 3-1.

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

 

The system displays an OK message when the configuration has been stored.


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

Other Configuration Commands

This section lists some of the commands that you can use to further customize your Cisco 10000 GE line card configuration. The commands described in this section are

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.

In the following example, negotiation is disabled:

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

Router(config-if)# no negotiation auto

 

Tips If you are connecting the Cisco 10000 GE line card to a Cisco 12000 card of the same type, disable auto-negotiation. To disable it, type no negotiation auto at the interface configuration prompt.

Assigning a MAC Address

To assign a specific MAC address to a gigabit Ethernet 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 two-byte hexadecimal value.


Tips 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 loopback mode on a GE interface, use the loopback command in interface configuration mode.

loopback [internal | external]

[no] loopback [internal | external]

 

Where:

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

For more information about this command, refer to the Cisco 10000 ESR Troubleshooting Guide.

In the following example, an internal loopback mode is defined for a GE interface:

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

router(config-if)# loopback internal


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Posted: Tue Oct 3 09:43:26 PDT 2000
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