Alcatel Carrier Internetworking Solutions Switch/Router 用户手册

Page 25-33

The 

 command is used to add or delete an IP RIP Output or Input filter. The IP RIP 

Filtering feature gives you a means of controlling the operation of the IP RIP protocol. By 
using IP RIP filters, you can minimize the number of entries that are put into the IP Forward-
ing Table as well as improve overall network performance by eliminating unnecessary traffic.

Two types of IP RIP filters are available:

•

 filters control which IP networks are allowed into the switch’s IP Forwarding 

Table whenever IP RIP updates are received.

•

 filters control the list of IP networks that are included in the RIP Updates sent 

out by the switch on any interface. Thus, RIP Output filters effectively control which 
networks the router advertises in the RIP updates it generates.

Here are some example uses of IP RIP filters:

• RIP Input and Output filters can be used to isolate entire network segments (and/or rout-

ers) in order to make the network “appear” differently to the network’s various segments.

• RIP Input and Output filters can be used to reduce the overall amount of WAN traffic that 

is needed to advertise routes that should not be used by a particular network segment.

♦ Important Note ♦

The IP RIP Filtering feature works only with the 
switch’s standard RIP routing protocol. If you elect to 
use Alcatel’s Advanced Routing feature (GateD) to 
provide RIP routing functionality in your switch, you 
will not be able to activate IP RIP Filtering.

Follow the steps below to add a “global” IP RIP Output or Input filter.

1. Enter 

A screen similar to the following displays:

Enter 

 (or just press 

) to select to add a filter. 

2. The following prompt displays:

Enter 

 (or just press 

) to add a RIP Output filter. Enter 

 to add a RIP Input filter. 

3. The following prompt displays:

Enter 

 (or just press 

) to set the filter action to “allow.” 

Enter 

 to set the filter action to “block.”