Vrrp - BEC MX-230 M1 User Manual

Device Configuration
64
Advanced Setup – VRRP

VRRP

VRRP is designed to eliminate the single point of failure inherent in the static default routed
environment. VRRP specifies an election protocol that dynamically assigns responsibility for a virtual
router to one of the VRRP routers in a LAN. The VRRP router controlling the IP address associated
with a virtual router is called the Master, and forwards packets sent to these IP addresses. The
election process provides dynamic fail-over in the forwarding responsibility should the Master become
unavailable. Any of the virtual router's IP addresses in a LAN can then be used as the default first hop
router by end-hosts. The advantage gained from using VRRP is a higher availability default path
without requiring configuration of dynamic routing or router discovery protocols on every end-host.
VRRP: Click to activate the feature.
VRID: Virtual Router Identifier. Configured item in the range 1-255 (decimal). A master or backup
router running the VRRP protocol may participate in one VRID instance.
Priority: Specifies the sending VRRP router's priority for the virtual router. Higher values equal higher
priority. The priority value for the VRRP router that owns the IP address associated with the virtual
router MUST be 255. VRRP routers backing up a virtual router MUST use priority values between 1
and 254. The default priority value for VRRP routers backing up a virtual router is 100. The priority
value zero (0) has special meaning indicating that the current Master has stopped participating in
VRRP. This is used to trigger Backup routers to quickly transition to Master without having to wait for
the current Master to timeout.
Preempt Mode: When preempt mode is activated, a backup router always takes over the
responsibility of the master router. When deactivated, the lower priority backup is left in the master
state.
VRIP: An IP address which is associated with the virtual router.
Advertisement period: Indicates the time interval in seconds between advertisements. Default in 1
second.
Click Save to apply settings.
BEC MX-230 M1 User Manual