Product specifications

Efficient Networks
®
Router family
Command Line Interface Guide
Chapter 6: Connection Management
Efficient Networks
®
Page 6-21
NOTE:
Our implementation does not validate the IP addresses in the advertisement packet or
authenticate using an authentication header.
Preemption Option (default, 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.
The preemption setting may differ among the backup routers for a VRID.
The preemption command is:
-> eth vrrp set option <preempt | nopreempt> <vrid> [<port#>]
Starting VRRP
After you have defined the VRRP logical interface, defined a VRID, and defined an
attribute record for the VRID, you are ready to start VRRP. To do so, you must both
save your changes and either restart the VRRP interface or reboot the router.
For example, these commands save all changes, restart the VRRP interface 0:1, and
list the VRRP records:
After you start VRRP, you can use the eth vrrp list or eth list commands to monitor the
status of the VRRP router.
-> save
-> eth restart 0:1
04/16/2001-07:49:04:VRRP: VRRP 7 on Interface ETHERNET/0 now active
-> eth vrrp list
VRRP Records for Ethernet Port ... 0
VRRP Record....................... VRID 7, Priority 100, Interval 1
Flags:preempt, No Authenticaion
No VRRP interfaces defined
Interface: ETHERNET/0:1
VRRP Router active