380 PowerConnect B-Series FCX Configuration Guide53-1002266-01Virtual Switch Redundancy Protocol (VSRP)10The "Restart ports:" line lists the ports that have the VSRP fast start enabled, and the downtime foreach port. Refer to Table 64 on page 377 to interpret the remaining information on the display.VSRP and MRP signalingA device may connect to an MRP ring through VSRP to provide a redundant path between thedevice and the MRP ring. VSRP and MRP signaling ensures rapid failover by flushing MACaddresses appropriately. The host on the MRP ring learns the MAC addresses of all devices on theMRP ring and VSRP link. From these MAC addresses, the host creates a MAC database (table),which is used to establish a data path from the host to a VSRP-linked device. Figure 74 belowshows two possible data paths from the host to Device 1.FIGURE 74 Two data paths from host on an MRP ring to a VSRP-linked deviceIf a VSRP failover from master to backup occurs, VSRP needs to inform MRP of the topologychange; otherwise, data from the host continues along the obsolete learned path and never reachthe VSRP-linked device, as shown in Figure 75.PowerConnect#show vsrp vrid 100VLAN 100auth-type no authenticationVRID 100========State Administrative-status Advertise-backup Preempt-mode save-currentmaster enabled disabled true falseParameter Configured Current Unit/Formulapriority 100 50 (100-0)*(2.0/4.0)hello-interval 1 1 sec/1dead-interval 3 3 sec/1hold-interval 3 3 sec/1initial-ttl 2 2 hopsnext hello sent in 00:00:00.3Member ports: ethe 2/5 to 2/8Operational ports: ethe 2/5 ethe 2/8Forwarding ports: ethe 2/5 ethe 2/8Restart ports: 2/5(1) 2/6(1) 2/7(1) 2/8(1)Path 1 Path 2MRPMemberMRPMasterMRPMemberMRPMemberMRPVSRP MasterVSRPHostVSRP BackupMRPMemberMRPMemberMRPVSRP MasterVSRPVSRP BackupDevice 1Device 1HostMRPMember MRPMemberMRPMaster MRPMember
