PowerConnect B-Series FCX Configuration Guide 361
53-1002266-01
Virtual Switch Redundancy Protocol (VSRP)
10
FIGURE 70 VSRP priority recalculation
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
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.
X
VSRP
Backup
VSRP
Master
optional link
VSRP
Aware
VSRP
Aware
VSRP
Aware
Configured priority = 100
Actual priority = 100 * (2/3) = 67
Configured priority = 100
Actual priority = 100 * (3/3) = 100
B
B
B
F
F
F
X
VSRP
Master
VSRP
Backup
optional link
VSRP
Aware
VSRP
Aware
VSRP
Aware
F
F
F
B
B
B
Configured priority = 150
Actual priority = 150 * (2/3) = 100
Configured priority = 100
Actual priority = 100 * (3/3) = 100
Link down
