Cisco 2950G 24 Software Configuration Guide - Page 258

Configuring LRE Ports Chapter 10 Configuring LRE Assigning a Sequence to a Specific LRE Port You can set sequences on a per-port basis. You can assign the same sequence or different sequences to the LRE ports on the switch. If you assign a sequence on a port basis, it overrides any previously or subsequently set profiles or global sequence. The switch resets the ports with the updated sequence settings when changed. Beginning in privileged EXEC mode, follow these steps to assign a sequence to a specific LRE port: Step 1 Step 2 Step 3 Step 4 Step 5 Command Purpose configure terminal Enter global configuration mode. interface LRE-interface Enter interface configuration mode, and enter the number of the LRE port to be configured. sequence sequence_name Enter the port sequence name (select from the list in Table 10-2). end Return to privileged EXEC mode. show controllers lre status sequence Verify the change. Use the show controllers lre status sequence details privileged EXEC command to display the LRE link statistics and sequence information on the LRE ports. For information about these commands, refer to the switch command reference. Using Rate Selection to Automatically Assign Profiles An LRE network requires a profile to be configured for each LRE port that is connected to a CPE device (the default is LRE-10). You can use the rate selection feature to automatically choose a profile from a set of profiles that the switch port uses to establish an LRE link (a link between an LRE switch port and an attached CPE device). Rate selection is enabled by default, but you must choose a sequence for rate selection to start (in other words, there is no default sequence defined). When rate selection is running, the switch chooses the profile for the LRE interface from a sequence, or predefined series of profiles, that are configured for that interface. The rate-selection algorithm begins with the first profile in the sequence and successively tries the next profiles (in descending order) until a link is established with the CPE device. When enabled, the LRE switch executes rate selection in these scenarios: • When the switch is booted • When you enable the rate selection feature • When you connect a new CPE device to the switch • When a link is lost for 25 seconds before being restored • When a configured sequence is modified 10-10 Catalyst 2950 Desktop Switch Software Configuration Guide 78-14982-01