Motorola Netopia Embedded Software Handbook page 238

7-36 Administrator's Handbook
•
must not match the IP address of any other VIP
If it matches the local IP address of that interface or the subnets, the Virtual Router will be defaulted to
have a priority of 255. See below.
Note:
A router currently in VRRP Master mode is the only device which will respond on the Virtual IP address.
Consequently, a router using the Virtual IP address as its Ethernet address will be non-responsive when not in
VRRP Master mode. Therefore, it is recommended that the Virtual IP address not be used as the unique
Ethernet IP address of any network device.
•
Priority – Assign a Priority in the range of 1 – 255 to the Virtual Router. The default is 100. The priority of
a Virtual Router will default to 255 if the Virtual Router is the IP address owner. A priority of 255 indicates
that the Virtual Router should operate in Master mode. Even a non-owner can have a priority of 255, and
thus operate in Master mode. You can configure only one Virtual Router to be a Master by default (priority
of 255) for an interface.
•
Preempt Mode – Toggle Preempt Mode either Yes or No. This setting specifies whether the router should
preempt the current Master for the ID, if its priority is greater than the current Master.
Note: A Virtual Router will always preempt if it is the owner of the Virtual IP address, regardless of the
Preempt Mode setting.
•
Advertisement-Interval – Enter an Advertisement-Interval in seconds, after which the Master sends VRRP
advertisement packets.
•
Enable – Toggle Enable to Yes to enable this Virtual Router; or No to disable it.
Select ADD VIRTUAL ROUTER NOW and press Return. You are returned to the Ethernet LAN VRRP Options
screen.
Note:
When an additional LAN is created, or deleted, the Router must be restarted for proper VRRP
operation.