Specifications

Chapter 8. Command Reference 251
port# Physical Ethernet interface (port) number (0 or 1). The default is 0; the parameter may be
omitted if the router has only one port.
If the router has two ports (an Ethernet hub router), the port number (0 or 1) must be specified.
Example:
This command lists the attribute records for the default port 0.
eth vrrp list
ETH VRRP SET MULTICAST
Changes the multicast address used for VRRP router announcements. This address is used by all VRRP
announcements from this router, regardless of VRID or port. To read more about VRRP Backup, see page 107.
Note: This command is not usually needed for VRRP configuration. Do not use this command unless you clearly
understand its impact.
Note: This command takes effect immediately, but you must save the change if it is to persist after you restart the
interface or reboot the router.
ipaddr IP address that is to be the new multicast address (4 decimals, separated by periods).
Example:
This command specifies a new multicast address for VRRP.
eth vrrp multicast 192.168.17.299
ETH VRRP SET OPTION
Specifies the preemption option in a VRRP attribute record for the VRID (virtual router ID).
Note: The default for the attribute is preempt.
The preemption option determines what the router does when it recovers from a failure, as follows:
¥ If the router is the master router for the IP address (it has priority 255), it always immediately preempts the
backup router and resumes its function in the network.The preemption option cannot change this.
¥ However, if the router is a backup router for the IP address and it determines that a router with a lower
priority is currently functioning as backup, the preemption option determines whether this router immediately
preempts the router with lower priority or waits for the lower priority router to go away before becoming the
active VRRP router.
To read more about VRRP Backup, see page 107.
The preemption option may differ among the backup routers for a VRID.
Note: This command takes effect immediately, but you must save the change if it is to persist after you restart the
interface or reboot the router.
eth vrrp set multicast <ipaddr>