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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 12 Configuring LRE
Configuring LRE Ports
The loopback interface configuration command is not supported on the LRE ports. External loopback
on the LRE ports is also not supported. Connecting a CPE Ethernet port to another Ethernet port on the
same CPE device can create a loop. If this happens, the switch stops sending to the CPE device and
blocks Ethernet traffic coming from the CPE device.
Assigning a Global Profile to All LRE Ports
Global profiles are set on a switch-wide basis.
Port sequences, global sequences, and port profiles have priority over global profiles (see the
“Precedence” section on page 12-15). If you assign a global profile to the switch, it cannot override any
previously or subsequently set sequence port profile. For more information on sequence and profile
precendence, see the
“Guidelines for Using LRE Profiles” section on page 12-10.
Changes to the global profile settings are immediately put in effect, and the global mode automatically
becomes the active mode.
Beginning in privileged EXEC mode, follow these steps to assign a global profile to the LRE ports:
To return to the default global profile, use the no lre profile profile-name global configuration command.
To display the LRE link statistics and profile information on the LRE ports, use the show controllers
lre privileged EXEC commands.
Assigning a Profile to a Specific LRE Port
You can set profiles on a per-port basis. You can assign the same profile or different profiles to the LRE
ports on the switch. The default active profile on all LRE ports is LRE-10 on the Catalyst 2950ST-8 LRE
and 2950ST-24 LRE switches and LRE-6 on the Catalyst 2950ST-24 LRE 997 switch.
The switch resets the ports with the updated profile settings when they are changed.
Beginning in privileged EXEC mode, follow these steps to assign a profile to a specific LRE port:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
lre profile profile-name Enter the global profile name. Select from the list in Table 12-1 on page 12-3
or Table 12-2 on page 12-3.
Step 3
end Return to privileged EXEC mode.
Step 4
show controllers lre profile details Verify the change.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Specify the LRE port to be configured, and enter interface configuration
mode.
Step 3
profile profile-name Enter the port profile name (select from the list in Table 12-1 on page 12-3
or Table 12-2 on page 12-3).