User's Manual

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link state. It provides an opportunity of switching master line state to the backup line state. The change of the
link state refers to whether the destination link bypass the VRRP routing SWITCH is reachable, rather than the
VRRP SWITCH itself is reachable.
VRRP supports two monitoring objects: First, monitoring the interface status. When the monitored port link
state is down, lower the priority of itself proactively. Second, monitoring the static route state of designated
node. When the monitored route is unreachable, lower the priority of itself proactively. Monitoring the static
route state of designated node needs to apply the function of BFD detecting static route.
70.3.9 Monitoring and Maintaining VRRP
Run the following commands in EXEC configuration mode.
Command Purpose
show vrrp { brief | [interface
vlan_intf
]
[detail]}
Displays the VRRP information.
debug vrrp [interface
intf-id vrid
] {errors
|
events
|
packets | all}
Enables the debugging on-off for VRRP
packets and events.
no debug vrrp
Disables the debugging on-off for VRRP
packets and events.
Displaying the VRRP information:
Switch_config#
show vrrp interface vlan
1
detail
VLAN1 - Group 1
VRRP State is Master
Virtual IP address : 192.168.20.110/24
Virtual Mac address : 0000.5e00.0101
Current Priority : 100 (Config 100)
VRRP timer : Advertise 1.0 s (default) master_down 3.6 s
VRRP current timer : Advertise 1.0 s master_down 0.0 s preempt after 0.0 s
Authentication string is not set
Preempt is set (delay : 0 s)
Learn Advertise Interval is not set
Master Router IP : 192.168.20.118, priority : 100, advertisment : 1.0 s
70.3.10 VRRP Configuration Example
The network topology is shown in figure 1.
Figure1 70-1 Network topology