Extreme Networks ExtremeWare XOS Guide Manual page 167

VRRP Tracking Example
Figure 26 is an example of VRRP tracking.
Figure 26: VRRP tracking
Host 2:
200.1.1.14/24
Gateway:
200.1.1.1
Host 1:
200.1.1.13/24
Gateway:
200.1.1.1
To configure VLAN tracking, as shown in Figure 26, use the following command:
Configure vlan vrrp1 add track-vlan vlan1
Using the tracking mechanism, if VLAN1 fails, the VRRP master realizes that there is no path to
upstream router via the Master switch and implements a failover to the backup.
To configure route table tracking, as shown in Figure 26, use the following command:
configure vlan vrrp1 add track-iproute 10.10.10.0/24
The route specified in this command must exist in the IP routing table. When the route is no longer
available, the switch implements a failover to the backup.
To configure ping tracking, as shown in Figure 26, use the following command:
configure vlan vrrp1 add track-ping 10.10.10.121 2 2
The specified IP address is tracked. If the fail rate is exceeded the switch implements a failover to the
backup.
ExtremeWare XOS 10.1 Concepts Guide
VRRP master
200.1.1.1/24
L2 switch
or hub
VRRP backup
200.1.1.2/24
Determining the VRRP Master
(track-vlan)
vlan vlan1
Router
10.10.10.121
EX_067
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