Configuring inbound/outbound route filtering, Configuring a priority for rip – H3C Technologies H3C S12500 Series Switches User Manual

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Step Command

Remarks

3.

Enable RIP to advertise a
default route.

default-route { only | originate } [ cost
cost ]

Optional.
Not enabled by default.

4.

Return to system view.

quit

N/A

5.

Enter interface view.

interface interface-type
interface-number

N/A

6.

Configure the RIP interface
to advertise a default

route.

rip default-route { { only | originate }
[ cost cost ] | no-originate }

Optional.
By default, a RIP interface can
advertise a default route if the RIP

process is configured with default

route advertisement.

NOTE:

The router enabled to advertise a default route does not receive default routes from RIP neighbors.

Configuring inbound/outbound route filtering

The switch supports route filtering. You can filter routes by configuring the inbound and outbound route

filtering policies by referencing an ACL or IP prefix list. You can also configure the router to receive routes

only from a specified neighbor.
To configure route filtering:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter RIP view.

rip [ process-id ] [ vpn-instance
vpn-instance-name ]

N/A

3.

Configure the filtering of
incoming routes.

filter-policy { acl-number | gateway
ip-prefix-name | ip-prefix

ip-prefix-name [ gateway

ip-prefix-name ] } import [ interface-type
interface-number
]

By default, no route filtering
policy is configured.
The filter-policy import
command filters incoming

routes. Routes not passing the

filtering will be neither installed
into the routing table nor

advertised to neighbors.

4.

Configure the filtering of
outgoing routes.

filter-policy { acl-number | ip-prefix
ip-prefix-name } export [ protocol
[ process-id ] | interface-type

interface-number ]

By default, no route filtering
policy is configured.
The filter-policy export
command filters outgoing routes,

including routes redistributed
with the import-route command.

Configuring a priority for RIP

Multiple IGP protocols can run in a router. If you want RIP routes to have a higher priority than those

learned by other routing protocols, assign RIP a smaller priority value to influence optimal route selection.

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