Router Redundancy Commands
40-4
40
Command Mode
Interface (VLAN)
Command Usage
• A router that has a physical interface with the same IP address as that used
for the virtual router (that is, the owner of the VRRP IP address) will become
the master virtual router. The backup router with the highest priority will
become the master router if the current master fails. When the original master
router recovers, it will take over as the active master router again.
• If two or more routers are configured with the same VRRP priority, the router
with the highest IP address is elected as the new master router if the current
master fails.
• If the backup preempt function is enabled with the
vrrp preempt
command,
and a backup router with a priority higher than the current acting master
comes on line, this backup router will take over as the new acting master.
However, note that if the original master (i.e., the owner of the VRRP IP
address) comes back on line, it will always resume control as the master.
• If the virtual IP address for the VRRP group is the same as that of the
configured device, the priority will automatically be set to 255 prior to using
this command.
Example
Related Commands
vrrp preempt (40-5)
vrrp timers advertise
This command sets the interval at which the master virtual router sends
advertisements communicating its state as the master. Use the
no
form to restore
the default interval.
Syntax
vrrp
group
timers advertise
interval
no
vrrp
group
timers advertise
•
group
- Identifies the VRRP group. (Range: 1-255)
•
interval
- Advertisement interval for the master virtual router.
(Range: 1-255 seconds)
Default Setting
1 second
Console(config-if)#vrrp 1 priority 1
Console(config-if)#
Summary of Contents for 8926EM
Page 6: ...ii ...
Page 34: ...Getting Started ...
Page 44: ...Introduction 1 10 1 ...
Page 62: ...Initial Configuration 2 18 2 ...
Page 64: ...Switch Management ...
Page 76: ...Configuring the Switch 3 12 3 ...
Page 118: ...Basic Management Tasks 4 42 4 ...
Page 164: ...User Authentication 6 28 6 ...
Page 176: ...Access Control Lists 7 12 7 ...
Page 284: ...Quality of Service 14 8 14 ...
Page 294: ...Multicast Filtering 15 10 15 ...
Page 300: ...Domain Name Service 16 6 16 ...
Page 310: ...Dynamic Host Configuration Protocol 17 10 17 ...
Page 320: ...Configuring Router Redundancy 18 10 18 ...
Page 344: ...IP Routing 19 24 19 ...
Page 356: ...Unicast Routing 20 12 20 Web Click Routing Protocol RIP Statistics Figure 20 5 RIP Statistics ...
Page 386: ...Unicast Routing 20 42 20 ...
Page 388: ...Command Line Interface ...
Page 400: ...Overview of the Command Line Interface 21 12 21 ...
Page 466: ...SNMP Commands 24 16 24 ...
Page 520: ...Access Control List Commands 26 18 26 ...
Page 546: ...Rate Limit Commands 30 2 30 ...
Page 612: ...VLAN Commands 34 24 34 ...
Page 626: ...Class of Service Commands 35 14 35 ...
Page 670: ...DHCP Commands 39 16 39 ...
Page 716: ...IP Interface Commands 41 36 41 ...
Page 768: ...IP Routing Commands 42 52 42 ...
Page 770: ...Appendices ...
Page 791: ......