Extreme Networks ExtremeWare XOS Guide Manual page 470

Extreme Standby Router Protocol
To configure the failover priority for an ESRP domain, follow these steps:
1 Set the failover priority, using the following command:
configure esrp <esrpDomain> add track-environment failover <priority>
2 Assign the priority flag precedence over the active ports count, using the following command:
configure esrp <esrpDomain> election-policy [ports > track > priority | ports >
track > priority > mac | priority > mac | priority > ports > track > mac |
priority > track > ports > mac | sticky > ports > track > priority | sticky >
ports > track > priority > mac | sticky > ports > weight > track > priority >
mac | sticky > priority > mac | sticky > priority > ports > track > mac | sticky
> priority > track > ports > mac | sticky > track > ports > priority > | track >
ports > priority | track > ports > priority > mac >]
Because the priority of both ESRP domains are set to the same value, ESRP will use the active ports
count to determine the master ESRP domain.
ESRP VLAN Tracking
You can configure an ESRP domain to track port connectivity to a specified VLAN as criteria for ESRP
failover. The number of VLAN active ports are tracked. If the switch is no longer connected to the
specified VLAN, the switch automatically relinquishes master status and remains in slave mode. You
can track a maximum of one VLAN.
To add or delete the tracked VLAN, use one of the following commands:
configure esrp <esrpDomain> add track-vlan
configure esrp <esrpDomain> delete track-vlan <vlan_name>
ESRP Route Table Tracking
You can configure ESRP to track specified routes in the route table as criteria for ESRP failover. If all of
the configured routes are not available within the route table, the switch automatically relinquishes
master status and remains in slave mode. You can track a maximum of eight routes per route table.
To add or delete a tracked route, use one of the following commands:
configure esrp <esrpDomain> add track-iproute <ipaddress>/<masklength>
configure esrp <esrpDomain> delete track-iproute <ipaddress>/<masklength>
ESRP Ping Tracking
You can configure ESRP to track connectivity using a simple ping to any device. This may represent the
default route of the switch, or any device meaningful to network connectivity of the master ESRP
switch. The switch automatically relinquishes master status and remains in slave mode if a ping
keepalive fails. You can configure a maximum of eight ping tracks.
NOTE
The ESRP ping tracking option cannot be configured to ping an IP address within an ESRP VLAN subnet. It should
be configured on some other normal VLAN across the router boundary.
To configure ping tracking, use the following command:
470
<vlan_name>>
ExtremeWare XOS 11.3 Concepts Guide