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5.2.8 Virtual Router Redundancy Protocol (VRRP) Configuration
A default gateway is a critical resource for connectivity. However, it’s prone to a single point of failure. Thus, redundancy for
the default gateway is required by the access point. If WAN backhaul is available on an AP7131, and a router failure occurs,
then the access point should act as a router and forward traffic on to its WAN link.
Define an external
Virtual Router Redundancy Protocol
(VRRP) configuration when router redundancy is required in a wireless
network requiring high availability.
Central to the configuration of VRRP is the election of a VRRP master. A VRRP master (once elected) performs the following
functions:
• Responds to ARP requests
• Forwards packets with a destination link layer MAC address equal to the virtual router MAC address
• Rejects packets addressed to the IP address associated with the virtual router, if it is not the IP address owner
• Accepts packets addressed to the IP address associated with the virtual router, if it is the IP address owner or accept
mode is true
Those nodes that lose the election process enter a backup state. In the backup state they monitor the master for any failures,
and in case of a failure one of the backups, in turn, becomes the master and assumes the management of the designated virtual
IPs. A backup does not respond to an ARP request, and discards packets destined for a virtual IP resource.
To define the configuration of a VRRP group:
1. Select the
Configuration
tab from the Web UI.
2. Select
Devices
.
3. Select
System Profile
from the options on left-hand side of the UI.
4. Select
VRRP
.
Figure 5-105
Profiles - VRRP screen - VRRP tab
NOTE:
VRRP support is available only on AP7131 model access point, and is not
available in other models.
Summary of Contents for WiNG 5.7.1
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