Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 98)

FIGURE 14 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.
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. The following figure shows an example.
FIGURE 15 Track port priority
Metro Features
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