Dell PowerConnect B-FCXs Configuration Manual page 404

10
Virtual Switch Redundancy Protocol (VSRP)
When you configure a track port, you assign a priority value to the port. If the port goes down, VSRP
subtracts the track port priority value from the configured VSRP priority. For example, if the you
configure a track port with priority 20 and the configured VSRP priority is 100, the software
subtracts 20 from 100 if the track port goes down, resulting in a VSRP priority of 80. The new
priority value is used when calculating the VSRP priority.
FIGURE 72
In Figure
priority calculation. If the track port goes down, the track priority does affect VSRP priority
calculation, as shown in
362
Track port priority
Configured priority = 100
Track priority 20
Actual priority = (100 - 0) * (3/3) = 100
Master
F
Track port
is up
VSRP
Aware
72, the track port is up. SInce the port is up, the track priority does not affect the VSRP
Figure 73.
Figure 72
VSRP
optional link
F
F
VSRP
Aware
PowerConnect B-Series FCX Configuration Guide
shows an example.
Configured priority = 100
Actual priority = 100 * (3/3) = 100
VSRP
Backup
B
B B
VSRP
Aware
53-1002266-01