Command Reference Guide

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IGMP multicast router port information
Command: /info/l3/igmp/mrouter
[IGMP Multicast Router Menu]
vlan - Show all multicast router ports on a single vlan
dump - Show all multicast router ports
The following table describes the commands used to display information about multicast routers learned
through IGMP Snooping.
Table 36 IGMP Multicast Router menu options
Command
Usage
vlan <1-4094>
Displays information for all multicast groups on a single VLAN.
dump
Displays information for all multicast groups learned by the switch.
VRRP information
Virtual Router Redundancy Protocol (VRRP) support on the switch provides redundancy between routers
in a LAN. This is accomplished by configuring the same virtual router IP address and ID number on each
participating VRRP-capable routing device. One of the virtual routers is then elected as the master,
based on a number of priority criteria, and assumes control of the shared virtual router IP address. If the
master fails, one of the backup virtual routers will assume routing authority and take control of the virtual
router IP address.
Command: /info/vrrp
VRRP information:
1: vrid 2, 205.178.18.210, if 1, renter, prio 100, master, server
2: vrid 1, 205.178.18.202, if 1, renter, prio 100, backup
3: vrid 3, 205.178.18.204, if 1, renter, prio 100, master, proxy
When virtual routers are configured, you can view the status of each virtual router using this command.
VRRP information includes:
Virtual router number
Virtual router ID and IP address
Interface number
Ownership status
owner identifies the preferred master virtual router. A virtual router is the owner when the IP
address of the virtual router and its IP interface are the same.
renter identifies virtual routers which are not owned by this device
Priority value. During the election process, the virtual router with the highest priority becomes master.
Activity status
master identifies the elected master virtual router.
backup identifies that the virtual router is in backup mode.
init identifies that the virtual router is waiting for a startup event. Once it receives a startup
event, it transitions to master if its priority is 255, (the IP address owner), or transitions to backup if it
is not the IP address owner.
Server status. The server state identifies virtual routers.
Proxy status. The proxy state identifies virtual proxy routers, where the virtual router shares the same IP
address as a proxy IP address. The use of virtual proxy routers enables redundant switches to share
the same IP address, minimizing the number of unique IP addresses that must be configured.