Brocade Communications Systems FastIron X Series User Manual

TABLE 103 VRRP and VRRP-E parameters (continued)
Parameter Description Default
directly forward packets to their destinations
through interfaces on the Backup router if it is
the shortest path to the destination.
Note regarding disabling VRRP or VRRP-E
NOTE
Disabling VRRP or VRRP-E is supported by IPv4 VRRP v2, and IPv6 VRRP and IPv6 VRRP-E v3.
If you disable VRRP or VRRP-E, the Layer 3 switch removes all the conguration information for the disabled protocol from the running-
cong le. Moreover, when you save the conguration to the startup-cong le after disabling one of these protocols, all the conguration
information for the disabled protocol is removed from the startup-cong le.
The CLI displays a warning message such as the following.
Brocade Router1(config-vrrp-router)#no router vrrp
router vrrp mode now disabled. All vrrp config data will be lost when writing to flash!
If you have disabled the protocol but have not yet saved the
conguration to the startup-cong le and reloaded the software, you can
restore the conguration information by re-entering the command to enable the protocol (for example, router vrrp ). If you have already
saved the conguration to the startup-cong le and reloaded the software, the information is gone.
If you are testing a VRRP or VRRP-E conguration and are likely to disable and re-enable the protocol, you may want to make a backup
copy of the startup-cong le containing the protocol conguration information. This way, if you remove the conguration information by
saving the conguration after disabling the protocol, you can restore the conguration by copying the backup copy of the startup-cong
le onto the ash memory.
Basic VRRP parameter conguration
To implement a simple VRRP conguration using all the default values, enter the commands shown in the following sections.
Conguration rules for VRRP
• The interfaces of all routers in a VRID must be in the same IP subnet.
• The IP addresses associated with the VRID must already be congured on the router that will be the Owner.
• An IP address associated with the VRID must be on only one router.
• The Hello interval must be set to the same value on the Owner and Backup routers for the VRID.
• The dead interval must be set to the same value on the Owner and Backup routers for the VRID.
• The track priority on a router must be lower than the router VRRP priority. Also, the track priority on the Owner must be higher
than the track priority on the Backup routers.
NOTE
When you use the router vrrp or the ipv6 router vrrp command to enter the VRRP conguration mode, the command prompt
does not change and results in the following general conguration command prompt: (config)# . This diers from entering
the VRRP extended mode, where entering the router vrrp-extended command results in a command prompt such as the
following: (config-vrrpe-router)#. For IPv6 VRRP extended mode, when entering the ipv6 router vrrp-extended
command, this results in a command prompt such as the following: (config-ipv6-vrrpe-router)#.
Basic VRRP parameter conguration
FastIron Ethernet Switch Layer 3 Routing
518 53-1003627-04

Brocade Communications Systems FastIron X Series Specifications

General

Brand	Brocade Communications Systems
Model	FastIron X Series
Category	Switch
Language	English