Vrrp Commands - Avaya G250 Administration

Configuring the router
The virtual router IP address needs to be configured as the default gateway on the
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stations.
The Main router advertises a six-byte Virtual MAC address in the format
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00.00.5E.00.01.02 VRID as a response to the stations' ARP requests.
The redundant router uses a VRRP polling protocol to check the Main router integrity at
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one second intervals (default). Otherwise, it is idle.
If the Main router fails, the redundant router that does not receive a response from four
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consecutive polling requests (default) takes over and starts to advertise the same Virtual
MAC for ARP requests. Therefore the stations will not sense any change either in the
configured default gateway or at the MAC level.
VRRP has no provisions for routing database synchronization among the redundant
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routers. You need to perform this manually if needed.

VRRP commands

Use the following commands to configure VRRP. For more information about these commands,
see Avaya G250 and Avaya G350 CLI Reference, 03-300437.
Use the ip vrrp command to create a virtual router on an interface. Use the no form of
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this command to delete a virtual router.
Use the ip vrrp address command to assign an IP address to a virtual router. Use the
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no form of this command to remove an IP address from a virtual router.
Use the ip vrrp auth-key command to set the virtual router simple password
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authentication key for the virtual router ID. Use the no form of this command to disable
simple password authentication for the virtual router instance.
Use the ip vrrp override addr owner command to accept packets addressed to
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the IP addresses associated with the virtual router, such as ICMP, SNMP, and telnet (if it is
not the IP address owner). Use the no form of this command to discard these packets.
Use the ip vrrp preempt command to configure a router to preempt a lower priority
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master for the virtual router ID. Use the no form of this command to disable preemption for
a virtual router instance. By default, preemption is enabled.
Use the ip vrrp primary command to set the primary address used as the source
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address of VRRP packets for the virtual router ID. Use the no form of this command to
restore the default primary address for a virtual router instance. By default, the primary
address is selected automatically by the device.
Use the ip vrrp priority command to set the virtual router priority value used when
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selecting a master router. Use the no form of this command to restore the default value.
Use the ip vrrp timer command to set the virtual router advertisement timer value for
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the virtual router ID. Use the no form of this command to restore the default value.
354 Administration for the Avaya G250 and Avaya G350 Media Gateways