Switch User Manual

IP routing configuration examples 147
Area ID Range Subnet/Mask Range Type Advertise Mode Metric
----------- ------------------ ------------- -------------- ------
0.0.0.2 172.3.0.0/16 Summary Link Summarize 100
To display ABR status, use the show ip ospf command. Usage of this
command on the example configuration would yield the following output:
Router ID: 1.1.1.2
Admin Status: Enabled
Version Number: 2
Area Border Router Oper Status: True
AS Boundary Router Config Status: False
External Link-State Advertisements: 2
External Link-State Checksum: 45698(0xb282)
Type-of-Service (TOS) Routing Supported: False
Originated Link-State Advertisements: 5
New Link-State Advertisements Received: 34
OSPF Traps: Disabled
Auto Virtual Link Creation: Disabled
SPF Hold-Down Time: 10
RFC 1583 Compatibility: Enabled
Configuring Autonomous System Border Routers (ASBR)
An ASBR is a router that has a connection to another Autonomous System
to distribute any external routes that originated from a protocol into OSPF. A
Nortel Ethernet Routing Switch 5500 Series configured as an ASBR can:
•
Distribute all OSPF routes to RIP.
•
Distribute RIP, direct, or static routes to OSPF.
Distributing OSPF routes to RIP and RIP to OSPF using AS-external
LSA Type 1 metrics The configuration example illustrated below, displays
a Nortel Ethernet Routing Switch 5500 Series configured as an ASBR
between an OSPF and RIP version 2 network. In this example, the router
distributes all OSPF routes to the RIP network and all RIP routes to the
OSPF network.
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
.