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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 12 Configuring LRE
Configuring LRE Ports
Configuring LRE Link Persistence
If the LRE link shuts down and is automatically re-enabled quickly, the switch configuration might
change. For example, the dynamic MAC addresses are removed from the MAC address table. You can
use the link persistence feature to configure a delay duration on the Catalyst 2950 LRE switch of up to
20 seconds before link failure is reported.
Beginning in privileged EXEC mode, follow these steps to set the delay duration on a specific LRE port:
To return to the default value, use the no persistence interface configuration command.
Configuring LRE Link Monitor
When link monitor is enabled, an LRE switch feature tracks undesirable or interesting conditions on a
link or takes system-defined actions after certain thresholds are reached.
Beginning in privileged EXEC mode, follow these steps to enable link monitor:
To disable the link monitor feature, use the no link monitor interface configuration command.
Configuring LRE Interleave
The interleave feature provides maximum protection against small interruptions on the LRE link but
delays data transmission. You can configure the interleave delay on LRE interfaces.
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
persistence delay Enter the length of time (in seconds) for the delay duration. The
default is 3 seconds. The range is 1 to 20 seconds.
Step 4
end Return to privileged EXEC mode.
Step 5
show controllers lre status persistence Verify the change.
Step 6
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
link monitor Enable LRE link monitoring on an LRE port.
Step 4
end Return to privileged EXEC mode.
Step 5
show running-config Verify the change.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.