3com S7906E 설치 설명서

 

1-4 

Through the following configuration, you can establish the collaboration between the track module and 

the interface management module, which informs the track module of the changes of the physical 

status and Layer 3 protocol status of an interface. 

Follow these steps to configure collaboration between the track module and the interface management 

module: 

Enter system view 

— 

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 application 
modules 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 
application modules 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 } * ] 

Required 

Use either approach 

No track entry that is 
associated with the BFD 
session is created by default. 

 

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 a master. 

The other routers function as the backups. When the master fails, to ensure that the hosts in the 

network segment can communicate with the external networks uninterruptedly, the backups in the 

VRRP group elect a new gateway to undertake the responsibility of the failed master 

When VRRP works in the standard protocol mode or load balancing mode, through the Track-VRRP 

collaboration, you can: 

z 

Change the priority of a router according to the status of the uplink. If there is a fault 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 with the track-VRRP 

collaboration function. Use the detection modules to monitor the status of the uplink of the router 

and establish the 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 thus decreases by a specified value, allowing