Dell PowerConnect FCS624S Configuration Guide - Page 403

Virtual Switch Redundancy Protocol (VSRP) 10 FIGURE 70 VSRP priority recalculation Link down Configured priority = 100 Actual priority = 100 * (2/3) = 67 Configured priority = 100 Actual priority = 100 * (3/3) = 100 VSRP Backup B BB X optional link VSRP Master FF F VSRP Aware VSRP Aware VSRP Aware You can reduce the sensitivity of a VSRP device to failover by increasing its configured VSRP priority. For example, you can increase the configured priority of the VSRP device on the left in Figure 70 to 150. In this case, failure of a single link does not cause failover. The link failure caused the priority to be reduced to 100, which is still equal to the priority of the other device. This is shown in Figure 71. FIGURE 71 VSRP priority bias Link down Configured priority = 150 Actual priority = 150 * (2/3) = 100 Configured priority = 100 Actual priority = 100 * (3/3) = 100 VSRP Master optional link VSRP Backup FF F X BBB VSRP Aware VSRP Aware VSRP Aware Track ports Optionally, you can configure track ports to be included during VSRP priority calculation. In VSRP, a track port is a port that is not a member of the VRID VLAN, but whose state is nonetheless considered when the priority is calculated. Typically, a track port represents the exit side of traffic received on the VRID ports. By default, no track ports are configured. PowerConnect B-Series FCX Configuration Guide 361 53-1002266-01