Switch User Manual

150 IP Routing Configuration and Management
2
Configure a route policy.
Create a route policy named Policy_Default which distributes
the IP prefix list created in step 1. Note that ospf is selected as
the match-protocol value. This causes the default route to be
advertised through RIP only if OSPF is operational.
5530-24TFD(config)# route-map Policy_Default permit 1
enable match protocol ospf set injectlist default
5530-24TFD(config)# route-map Policy_Default
1 set metric-type type1
3
Apply the route policy to the RIP Out Policy.
Apply the route policy created in step 2 to RIP interface 10.1.1.41.
5530-24TFD(config)# interface vlan 100
5530-24TFD(config-if)# ip rip out-policy Policy_Default
—End—
Controlling NSSA external route advertisements
In an OSPF NSSA, the NSSA N/p-bit (in the OSPF hello packets Options
field) is used to tell the ABR which external routes can be advertised to other
areas. When the NSSA N/p-bit is set true, the ABR exports the external
route. This is the default setting for the Nortel Ethernet Routing Switch 5500
Series. When the NSSA N/p-bit is not set true, the ABR drops the external
route. A route policy can be created on the Nortel Ethernet Routing Switch
5500 Series to manipulate the N/ p-bit value.
For example, the illustration below shows a RIP network located in NSSA
2. If advertising the 15.15.15.0/24 network to area 0 is the only desired
action, perform the following tasks:
•
Enable R1 as an OSPF ASBR.
•
Create NSSA area 0.0.0.2.
•
Create a route policy to advertise OSPF and direct interfaces to RIP.
•
Create a route policy to only advertise RIP network 15.15.15.0/24 to
area 0 by using the NSSA N/p-bit.
Nortel Ethernet Routing Switch 5500 Series
Configuration-IP Routing Protocols
NN47200-503 03.01 Standard
5.1 27 August 2007
Copyright © 2005-2007, Nortel Networks
.