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IP routing conﬁguration examples 149

5530-24TFD(config-router)# as-boundary-router enable

5530-24TFD(config-router)# router-id 1.1.1.3

5530-24TFD(config)# router ospf enable

Conﬁgure OSPF route distribution.

Conﬁgure OSPF route distr ibution to import RIP into OSPF. The

Nortel Ethernet Routing Switch 5500 Series distributes the RIP

routes as AS-external LSA (LSA type 5), using external metric type 1.

5530-24TFD(config)# router ospf

5530-24TFD(config-router)# redistribute rip enable

metric 10 metric-type type1

5530-24TFD(config)# ip ospf apply redistribute rip

Conﬁgure a route policy.

A route policy is required for OSPF to RIP route redistribution. After

the route policy is created, apply it to the RIP interface. The following

command creates a route policy named allow which distributes both

direct and OSPF interfaces.

5530-24TFD(config)# route-map allow permit 1 enable

match protocol direct,ospf

Apply the route policy to the RIP Out Policy.

The following commands apply the route policy created in step 6 to

RIP interface 10.1.1.41.

5530-24TFD(config)# interface vlan 100

5530-24TFD(config-if)# ip rip out-policy allow

—End—

The conﬁguration steps described in the above example distributes all OSPF

routes to RIP. However, there are times when it can be more advantageous

to distribute only a default route to RIP. The following conﬁguration steps

describe how to distribute only a default route to RIP instead of all OSPF

routes to RIP.

To conﬁgure R1 to distribute a default route only to RIP, complete the

following steps:

Step Action

Conﬁgure an IP preﬁx list with a default route.

The following command creates an IP preﬁx list named default with

an IP address of 0.0.0.0.

5530-24TFD(config)# ip prefix-list default 0.0.0.0/0

Nortel Ethernet Routing Switch 5500 Series

Conﬁguration-IP Routing Protocols

NN47200-503 03.01 Standard

5.1 27 August 2007