3Com 4800G Series, Configuration Manual

Page: 1239 / 1246

Configuring Collaboration Between the Track Module and the Application Modules 1239
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CAUTION: When you configure a Track object, the specified NQA test group and
Reaction entry can be nonexistent. In this case, the status of the configured Track
object is
Invalid .
Configuring
Collaboration
Between the Track
Module and the
Application Modules
Configuring Track-VRRP
Collaboration
Through the Track-VRRP collaboration, you can:
■
Monitor the upper link. If there is a fault on the upper link of the master of a
VRRP group, hosts in the LAN cannot access the external network through the
master. In this case, the status of the monitored Track object changes to
Negative, and the priority of the master thus decreases by a specified value,
allowing a higher priority backup in the VRRP group to become the master to
maintain proper communication between the hosts in the LAN and the
external network.
■
Monitor the master on a backup. If there is a fault on the master, the backup
working in the switchover mode will switch to the master immediately to
maintain normal communication.
Configuration prerequisites
Before configuring VRRP to monitor a Track object, you need to create a VRRP
group on an interface and configure the virtual IP address of the VRRP group.
Configuration procedure
Follow these steps to configure Track-VRRP collaboration:
To do… Use the command… Remarks
Enter system view system-view -
Create a Track object and
associate it with the specified
Reaction entry of the NQA
test group track track-entry-number nqa
entry admin-name
operation-tag reaction
item-num
Required
No Track object is created by
default.
To do… Use the command… Remarks
Enter system view system-view -
Enter interface view interface interface-type
interface-number
-
Create a VRRP group and
configure its virtual IP address vrrp vrid virtual-router-id
virtual-ip virtual-address
Required
No VRRP group is created by
default.
Specify a Track object to be
monitored by VRRP vrrp vrid virtual-router-id
track track-entry-number
[ reduced priority-reduced |
switchover ]
Required
No Track object is specified
for VRRP by default.