Switch User Manual

IP routing conﬁguration examples 145

Conﬁguring Area Border Routers (ABR)

Conﬁguration of an OSPF ABR is an automatic process on the Nortel

Ethernet Routing Switch 5500 Series; no user intervention is required. The

Nortel Ethernet Routing Switch 5500 Series automatically becomes an

OSPF ABR when it has operational OSPF interfaces belonging to more

than one area.

In the conﬁguration example below, the Nortel Ethernet Routing Switch

5500 Series R1 is automatically conﬁgured as an OSPF ABR after it is

conﬁgured with an OSPF interface for area 0.0.0.0 and 0.0.0.2.

ABR conﬁguration example

To recreate the illustrated ABR conﬁguration, use the following procedure:

Step Action

Conﬁgure an OSPF interface on port 2/6.

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

10.1.1.17/30

Conﬁgure an OSPF interface on port 2/1.

Conﬁgure port 2/1 as a brouter port in VLAN 200 and enable OSPF

on this interface.

5530-24TFD(config)# interface fast 2/1

5530-24TFD(config-if)# brouter port 2/1 vlan 200 subnet

10.1.1.22/30

5530-24TFD(config-if)# ip ospf enable

Nortel Ethernet Routing Switch 5500 Series

Conﬁguration-IP Routing Protocols

NN47200-503 03.01 Standard

5.1 27 August 2007