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IP routing configuration examples 141
OSPF stub area example
Note: AS-external LSAs are not flooded into a stub area. Instead, only
one default route to external destinations is distributed into the stub area
by the stub ABR router. The area default cost specifies the cost for
advertising the default route into stub area by the ABR.
Use the procedure outlined below to perform the stub area configuration
illustrated above:
Note: This example assumes that global IP routing has been enabled
on the switch. Global IP routing is enabled on the switch in Global
Configuration mode using the ip routing command.
Step Action
1
Configure router R1.
a. Configure the OSPF interface on R1.
Configure port 2/6 as a brouter port in VLAN 100.
5530-24TFD(config)# interface fast 2/6
5530-24TFD(config-if)# brouter port 2/6 vlan 100
subnet 10.1.1.18/30
b. Configure VLAN 2 on R1.
Create VLAN 2 and assign an IP address to it.
5530-24TFD(config)# vlan create 2 type port
5530-24TFD(config)# vlan mem add 2 1/20
5530-24TFD(config)# interface vlan 2
5530-24TFD(config-if)# ip address 172.3.3.1
255.255.255.0
c. Enable OSPF on R1.
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
.