Administration of the Avaya G350 Media Gateway - Avaya Support

Configuring the router●●●●●The virtual router IP address needs to be configured as the default gateway on thestations.The Main router advertises a six-byte Virtual MAC address in the format00.00.5E.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 atone second intervals (default). Otherwise, it is idle.If the Main router fails, the redundant router that does not receive a response from fourconsecutive polling requests (default) takes over and starts to advertise the same VirtualMAC for ARP requests. Therefore the stations will not sense any change either in theconfigured default gateway or at the MAC level.VRRP has no provisions for routing database synchronization among the redundantrouters. You need to perform this manually if needed.VRRP commandsUse the following commands to configure VRRP. For more information about these commands,see Avaya G350 Media Gateway CLI Reference, 555-245-202.●●●●●●●●Use the ip vrrp command to create a virtual router on an interface. Use the no form ofthis command to delete a virtual router.Use the ip vrrp address command to assign an IP address to a virtual router. Use theno 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 passwordauthentication key for the virtual router ID. Use the no form of this command to disablesimple password authentication for the virtual router instance.Use the ip vrrp override addr owner command to accept packets addressed tothe IP addresses associated with the virtual router, such as ICMP, SNMP, and telnet (if it isnot 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 prioritymaster for the virtual router ID. Use the no form of this command to disable preemption fora virtual router instance. By default, preemption is enabled.Use the ip vrrp primary command to set the primary address used as the sourceaddress of VRRP packets for the virtual router ID. Use the no form of this command torestore the default primary address for a virtual router instance. By default, the primaryaddress is selected automatically by the device.Use the ip vrrp priority command to set the virtual router priority value used whenselecting 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 forthe virtual router ID. Use the no form of this command to restore the default value.200 Administration of the Avaya G350 Media Gateway