Brocade TurboIron 24X Series Configuration Guide - Manual (Page 634)

600 Brocade TurboIron 24X Series Configuration Guide
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Configuring RIP parameters
Suppressing RIP route advertisement on a VRRP
or VRRPE backup interface
NOTE
This section applies only if you configure the Layer 3 Switch for Virtual Router Redundancy Protocol
(VRRP) or VRRP Extended (VRRPE). Refer to
Chapter 27, “Configuring VRRP and VRRPE” .
Normally, a VRRP or VRRPE Backup includes route information for the virtual IP address (the
backed up interface) in RIP advertisements. As a result, other routers receive multiple paths for
the backed up interface and might sometimes unsuccessfully use the path to the Backup rather
than the path to the Master.
You can prevent the Backups from advertising route information for the backed up interface by
enabling suppression of the advertisements.
To suppress RIP advertisements for the backed up interface, enter the following commands.
TurboIron(config)#router rip
TurboIron(config-rip-router)#use-vrrp-path
Syntax: [no] use-vrrp-path
The syntax is the same for VRRP and VRRPE.
Configuring RIP route filters
You can configure RIP route filters to permit or deny learning or advertising of specific routes.
Configure the filters globally, then apply them to individual interfaces. When you apply a RIP route
filter to an interface, you specify whether the filter applies to learned routes (in) or advertised
routes (out).
NOTE
A route is defined by the destination IP address and network mask.
NOTE
By default, routes that do not match a route filter are learned or advertised. To prevent a route from
being learned or advertised, you must configure a filter to deny the route.
To configure RIP filters, enter commands such as the following.
TurboIron(config-rip-router)#filter 1 permit 10.53.4.1 255.255.255.0
TurboIron(config-rip-router)#filter 2 permit 10.53.5.1 255.255.255.0
TurboIron(config-rip-router)#filter 3 permit 10.53.6.1 255.255.255.0
TurboIron(config-rip-router)#filter 4 deny 10.53.7.1 255.255.255.0
These commands explicitly permit RIP routes to three networks, and deny the route to one network.
Since the default action is permit, all other routes (routes not explicitly permitted or denied by the
filters) can be learned or advertised.
Syntax: filter <filter-num> permit | deny <source-ip-address> | any <source-mask> | any [log]