Associating The Track Module With An Application Module; Associating Track With Vrrp - HP 6125G Configuration Manual

Step
2. Associate track with interface
management.
Associating the track module with an application
module

Associating track with VRRP

VRRP is an error-tolerant protocol. It adds a group of routers that can act as network gateways to a VRRP
group, which forms a virtual router. Routers in the VRRP group elect the master acting as the gateway
according to their priorities. A router with a higher priority is more likely to become the master. The other
routers function as the backups. When the master fails, the backups in the VRRP group elect a new
gateway to undertake the responsibility of the failed master. This ensures that the hosts in the network
segment can uninterruptedly communicate with external networks.
When VRRP is operating in standard protocol mode or load balancing mode, associate the track module
with the VRRP group to implement the following actions:
Change the priority of a router according to the status of the uplink. If a fault occurs on the uplink
•
of the router, the VRRP group cannot be aware of the uplink failure. If the router is the master, hosts
in the LAN cannot access the external network. This problem can be solved by establishing a
track-VRRP group association. Use the detection modules to monitor the status of the uplink of the
router and establish collaborations between the detection modules, track module and VRRP. When
the uplink fails, the detection modules notify the track module to change the status of the monitored
track entry to Negative, and the priority of the master then decreases by a specific value, allowing
a higher priority router in the VRRP group to become the master, and maintaining proper
communication between the hosts in the LAN and the external network.
Monitor the master on a backup. If a fault occurs on the master, the backup operating in switchover
•
mode will switch to the master immediately to maintain normal communication.
Command
Create a track entry, associate it with the
interface management module to monitor
the physical status of an interface, and
specify the delay time for the track module
to notify the associated application
module when the track entry status
changes:
track track-entry-number interface
interface-type interface-number [ delay
{ negative negative-time | positive
positive-time } * ]
Create a track entry, associate it with the
interface management module to monitor
the Layer 3 protocol status of an interface,
and specify the delay time for the track
module to notify the associated
application module when the track entry
status changes:
track track-entry-number interface
interface-type interface-number protocol
{ ipv4 | ipv6 } [ delay { negative
negative-time | positive positive-time } * ]
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Remarks
Use either approach.
No track entry is created by
default.