Policies and Filters
December 2000 C - 29
Figure C.5 RIP route filters
Actions
• An RIP route filter applied to outbound traffic on a port permits or denies advertisement of routes.
• An RIP route filter applied to inbound traffic on a port permits or denies learning of the route. When the
device learns an RIP route, the route is added to the RIP route table.
Scope
You configure RIP route filters globally, then apply them to specific ports.
Syntax
Use the following CLI commands or Web management interface panels to configure RIP route filters.
RIP Neighbor Filters
RIP neighbor filters specify the RIP neighbors the Foundry device can receive updates from or send updates to.
You identify the neighbor by specifying its IP address in the filter. Figure C.6 shows an example of an RIP
neighbor filter. In this example, the Foundry device is configured to drop all RIP advertisements from the RIP
neighbor 192.99.26.1/24. Since this is an outbound filter, the filter does not affect advertisements received by the
Foundry device from 192.99.26.1/24. The Foundry device can still learn RIP routes from this neighbor.
Table C.15: RIP Route Filters
CLI syntax Web management links
BigIron(config-rip-router)# filter <filter-num> permit | deny
<source-ip-address> | any <source-mask> | any
BigIron(config-if-1/1)# ip rip filter-group in | out <filter-list>
Configure->RIP->Route Filter
Inbound IP/RIP Route Filter Group for Port 4/1
FilterID Action Source
--------------------------------------------------------
2 Deny 192.164.21.0/24
1024 Permit any
Neighbor
RIP Router
192.164.28.0/24
192.164.21.0/24
209.157.22.0/24
209.241.12.0/24
Outbound IP/RIP Route Filter Group for Port 4/1
FilterID Action Source
--------------------------------------------------------
1 Deny 209.157.22.0/24
1024 Permit any
209.241.12.0/24
209.157.22.0/24
192.164.21.0/24
192.164.28.0/24
X
X
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