Dell PowerConnect B-RX Configuration Manual page 506

15
Overview of Virtual Switch Redundancy Protocol (VSRP)
FIGURE 79
In Figure
priority calculation. If the track port goes down, the track priority does affect VSRP priority
calculation, as shown in
FIGURE 80
Track link
is down
MAC address failover on VSRP-aware devices
VSRP-aware devices maintain a record of each VRID and its VLAN. When the device has received a
Hello message for a VRID in a given VLAN, the device creates a record for that VRID and VLAN and
includes the port number in the record. Each subsequent time the device receives a Hello
message for the same VRID and VLAN, the device checks the port number:
430
Track port priority
Configured priority = 100
Track priority 20
Actual priority = (100 - 0) * (3/3) = 100
F
Track port
is up
VSRP
Aware
79, the track port is up. SInce the port is up, the track priority does not affect the VSRP
Figure
Track port priority subtracted during priority calculation
Configured priority = 100
Track priority 20
Actual priority = (100 - 20) * (3/3) = 80
X
B
VSRP
Aware
VSRP
Master
optional link
F
F
VSRP
Aware
80.
VSRP
Backup
optional link
B
B
VSRP
Aware
Configured priority = 100
Actual priority = 100 * (3/3) = 100
VSRP
Backup
B B B
VSRP
Aware
Configured priority = 100
Actual priority = 100 * (3/3) = 100
VSRP
Master
F F F
VSRP
Aware
BigIron RX Series Configuration Guide
53-1002253-01