Alcatel-Lucent OmniAccess 700, Cli Configuration Manual

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VRRP Interface Tracking
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145
Alcatel-Lucent
Beta Beta
CLI Configuration Guide
T
O
V
IEW
VRRP M
ANAGEMENT
M
ESSAGES
E
XAMPLE
ALU# debug vrrp management all
VRRP I
NTERFACE
T
RACKING
The VRRP interface tracking feature extends the capabilities of the VRRP to allow
tracking of specific interfaces that can alter the priority level of a virtual router in a
VRRP group.
For example, a WAN interface can be tracked. If the WAN interface goes down,
then the priority of the VRRP group is lowered, and another VRRP router with the
next highest priority becomes the master for that VRRP group.
A
LCATEL
-L
UCENT
'
S
I
NTERFACE
T
RACKING
D
ESIGN
For each VRRP group that is configured, you can specify an interface that needs
to be tracked by the VRRP module for that group. The VRRP module in the router
will actively monitor the status of the specified interface. Any change in the status
of the interface will affect the priority of the router. When track interface is enabled
for a VRRP group, the behavior of the router is as follows:
W
HEN THE
T
RACK
I
NTERFACE
G
OES
D
OWN
The following section details the process followed by a router when it is either in
master state or backup state, when the track interface goes down.
R
OUTER IN
M
ASTER
S
TATE
The following actions are taken when the track interface goes down:
•
The router will set its priority to 20.
•
Any router with the next highest priority will take over as the master, and the state
of the current master router changes to a backup state.
•
In the absence of another active router with the next highest priority, the current
router will become the master again to provide some limited set of services.
R
OUTER IN
B
ACKUP
S
TATE
The router will not take any action when the track interface goes down.
Command (SUM/CM/ICM) Description
debug vrrp management
{ all | protocol | vrrpfs }
This command displays VRRP
management debug messages.