3com MSR 20-20 참조 매뉴얼

ip-prefix ip-prefix-name: References an IP prefix list to filter received routes. The 
ip-prefix-name is a string of 1 to 19 characters.

gateway ip-prefix-name: References an IP prefix list to filter routes from the 
gateway.

interface-type interface-number: Specifies an interface.

Use the filter-policy import command to configure the filtering of incoming 
routes.

Use the undo filter-policy import command to remove the filtering.

By default, RIP does not filter incoming routes.

acl and ip ip-prefix.

# Reference ACL 2000 to filter received routes.

<Sysname> system-view

[Sysname] rip 1

[Sysname-rip-1] filter-policy 2000 import 

# Reference IP prefix list abc on Ethernet1/1 to filter all received RIP routes.

[Sysname-rip-1] filter-policy ip-prefix abc import ethernet 1/1 

RIP view

None

Use the host-route command to enable host route reception.

Use the undo host-route command to disable host route reception.

By default, receiving host routes is enabled.

In some cases, a router may receive many host routes from the same network 
segment. These routes are not helpful for routing and occupy a large amount of 
network resources. You can use the undo host-route command to disable 
receiving of host routes.

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