Brocade TurboIron 24X Series Configuration Guide - Manual (Page 902)

868 Brocade TurboIron 24X Series Configuration Guide
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Overview
the track priorities are always lower than the VRRP priorities. The default track priority for the
router that owns the VRID IP addresses is 2. The default track priority for Backup routers is 1. If
you change the track port priorities, make sure you assign a higher track priority to the Owner of
the IP addresses than the track priority you assign on the Backup routers.
Suppression of RIP advertisements for backed up interfaces
The VRRP allows you to configure the protocol to suppress RIP advertisements for the backed up
paths from Backup routers. Normally, a VRRP Backup router includes route information for the
interface it is backing up in RIP advertisements. As a result, other routers receive multiple paths
for the interface and might sometimes unsuccessfully use the path to the Backup rather than the
path to the Master. If you enable the Brocade implementation of VRRP to suppress the VRRP
Backup routers from advertising the backed up interface in RIP, other routers learn only the path to
the Master router for the backed up interface.
Authentication
The VRRP can use simple passwords to authenticate VRRP packets. The VRRP authentication type
is not a parameter specific to the VRID. Instead, VRRP uses the authentication type associated
with the interfaces on which you define the VRID. For example, if you configure your router
interfaces to use a simple password to authenticate traffic, VRRP uses the same simple password
and VRRP packets that do not contain the password are dropped. If your interfaces do not use
authentication, neither does VRRP.
NOTE
The MD5 authentication type is not supported for VRRP.
Independent operation of VRRP alongside RIP, OSPF, and BGP4
VRRP operation is independent of the RIP, OSPF, and BGP4 protocols. Their operation is
unaffected when VRRP is enabled on a RIP, OSPF, or BGP4 interface.
Dynamic VRRP configuration
All VRRP global and interface parameters take effect immediately. You do not need to reset the
system to place VRRP configuration parameters into effect.
Overview of VRRPE
NOTE
VRRPE is not supported in the base Layer 3 code.
VRRPE is similar to VRRP, but differs in the following respects:
• Owners and Backup:
• VRRP has an Owner and one or more Backups for each VRID. The Owner is the router on
which the VRID's IP address is also configured as a real address. All the other routers
supporting the VRID are Backups.