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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 12 Configuring LRE
Configuring LRE Ports
• Event—The switch logs only LRE events.
• Extended—The switch logs LRE events and all the LRE parameters.
• Normal—The switch logs LRE events and the typical LRE parameters.
You can use the logging lre interface configuration command to specify the mode in which to log LRE
events. To display the events on the LRE interfaces, use the show controllers lre log privileged EXEC
command. For more information about these commands, see the command reference for this release.
If the syslog export feature is enabled, the switch sends the information to the LRE message logging
process and to the system message logging process. For information about configuring this feature, see
the “Configuring Syslog Export” section on page 12-22.
Configuring LRE Ports
These sections describe configuration guidelines and how to assign a profile to all or to individual LRE
ports. These sections contain more information about LRE links, ports, and profiles:
• Default LRE Configuration, page 12-8
• Environmental Guidelines for LRE Links, page 12-9
• Guidelines for Using LRE Profiles, page 12-10
• CPE Ethernet Link Guidelines, page 12-10
• Assigning a Global Profile to All LRE Ports, page 12-12 (optional)
• Assigning a Profile to a Specific LRE Port, page 12-12 (optional)
• Assigning a Global Sequence to All LRE Ports, page 12-13 (optional)
• Assigning a Sequence to a Specific LRE Port, page 12-13 (optional)
• Using Rate Selection to Automatically Assign Profiles, page 12-14 (optional)
• Configuring LRE Link Persistence, page 12-19 (optional)
• Configuring LRE Link Monitor, page 12-19 (optional)
• Configuring LRE Interleave, page 12-19 (optional)
• Configuring Upstream Power Back-Off, page 12-20 (available only on the Catalyst 2950ST-24 LRE
997 switch) (optional)
• Configuring CPE Toggle, page 12-21 (optional)
• Configuring Syslog Export, page 12-22 (optional)

Default LRE Configuration

This is the default LRE configuration:
• On the Catalyst 2950ST-8 LRE and the Catalyst 2950ST-24 LRE switches, the profile on all LRE
ports is LRE-10.
• On the Catalyst 2950ST-24 LRE 997 switches, the profile on all LRE ports is LRE-6.
• Global profiles and global sequences are not assigned to LRE ports.
• Per-port sequences are not assigned to specific LRE ports.