3com 3031 Instruccion De Instalación
VRRP Configuration
1023
Authentication Header to authenticate the VRRP packets. In this case, you should
set the authentication key to no longer than 8 bytes.
set the authentication key to no longer than 8 bytes.
Those packets failing to pass the authentication will be discarded and a trap
packet will be sent to the network administrator.
packet will be sent to the network administrator.
Perform the following configuration in interface view.
By default, there is no authentication.
The same authentication method and authentication key should be configured for
the standby group of an interface.
the standby group of an interface.
Configuring VRRP
Standby Group Timer
The MASTER router of a VRRP standby group notifies its normal operation state to
the routers within the group by sending them VRRP packets regularly
(adver_interval). If the STANDBY routers fail to receive the VRRP packets over a
certain period of time (master-down-interval), they determine that the master
router is not functioning properly and the router with highest priority will change
the state to MASTER.
the routers within the group by sending them VRRP packets regularly
(adver_interval). If the STANDBY routers fail to receive the VRRP packets over a
certain period of time (master-down-interval), they determine that the master
router is not functioning properly and the router with highest priority will change
the state to MASTER.
The user can adjust the MASTER routers' sending interval (adver-interval) of VRRP
packets by configuring the timer command. The master-down-interval of the
STANDBY routers is about three times that of the adver-interval. Too much
network traffic or the differences of different router timers will result in abnormal
master-down-interval and state switchover. Such problems can be solved through
prolonging the adver-interval (in seconds) and configuring delay time.
packets by configuring the timer command. The master-down-interval of the
STANDBY routers is about three times that of the adver-interval. Too much
network traffic or the differences of different router timers will result in abnormal
master-down-interval and state switchover. Such problems can be solved through
prolonging the adver-interval (in seconds) and configuring delay time.
Perform the following configuration in interface view.
adver_interval
ranges from 1 to 255. By default, it is 1 second.
Configuring Interface to
be Monitored
VRRP interface monitoring function has expanded the standby function in that it
not only provides standby to the interface in trouble where the standby group
resides, but also to some other malfunctioning router interface. The specific
operation is implemented through configuring the command for monitoring an
interface. When the monitored interface is DOWN, the standby group will be
automatically priority-reduced, thus resulting in higher priority of other routers
within the standby group than this router. And the other routers with higher
not only provides standby to the interface in trouble where the standby group
resides, but also to some other malfunctioning router interface. The specific
operation is implemented through configuring the command for monitoring an
interface. When the monitored interface is DOWN, the standby group will be
automatically priority-reduced, thus resulting in higher priority of other routers
within the standby group than this router. And the other routers with higher
Table 1106 Configuring authentication method and authentication key
Operation
Command
Configure authentication method
and authentication key
and authentication key
vrrp authentication-mode
{
md5 key |
simple key ]
Restore to the default value
undo vrrp authentication-mode
Table 1107 Configuring VRRP timer
Operation
Command
Configure VRRP timer
vrrp vrid virtual-router-ID timer
advertise
adver-interval
Restore to the default value
undo vrrp vrid virtual-router-ID timer
advertise