HP 6125XLG R2306-HP 6125XLG Blade Switch TRILL Configuration Guide - Page 14

When N equal-cost links exist in the network, each TRILL distribution tree selects an equal-cost link for forwarding packets through J mod N in root bridge priority order. J is the priority sequence number of a multicast tree and starts from 0. As shown in Figure 6: • The link directly connecting RB 1 to RB 3 is assigned to the TRILL distribution tree rooted at RB 3. • The link RB 1-RB 2-RB 3 is assigned to the TRILL distribution tree rooted at RB 4. To configure the distribution trees: Step 1. Enter system view. 2. Enter TRILL view. 3. Set a priority for the RB. 4. Configure the number of distribution trees that the RB wants all RBs to compute. Command system-view trill tree-root priority priority trees calculate count 5. Enable multicast ECMP. multicast-ecmp enable Remarks N/A N/A The default setting is 32768. The default setting is 1. By default, multicast ECMP is disabled. Make sure the multicast ECMP status is the same on all RBs in the TRILL network. Otherwise, multicast, broadcast, and unknown unicast frames might fail to be forwarded. Enabling logging of TRILL neighbor changes Perform this task to output logs of TRILL neighbor changes to the configuration terminal. To enable logging of TRILL neighbor changes: Step 1. Enter system view. 2. Enter TRILL view. 3. Enable logging of TRILL neighbor changes. Command system-view trill log-peer-change enable Remarks N/A N/A By default, logging of TRILL neighbor changes is enabled. Configuring TRILL GR Graceful Restart (GR) ensures the continuity of packet forwarding when a protocol restarts or an active/standby switchover occurs. The device on which a protocol restarts or an active/standby switchover occurs advertises the restart status to the neighbors, and allows the neighbors to re-establish the neighborship, instead of terminating the connections. GR involves the following roles: • GR Restarter-Graceful restarting router. It must be GR capable. 11