Nortel Networks WEB OS 212777 - Manual (Page 80)

Web OS 10.0 Application Guide
80 n Chapter 4: OSPF
212777-A, February 2002
Router ID
Routing devices in OSPF areas are identified by a router ID. The router ID is expressed in IP
address format. The IP address of the router ID is not required to be included in any IP inter-
face range or in any OSPF area.
The router ID can be configured in one of the following two ways:
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Dynamically—OSPF protocol configures the lowest IP interface IP address as the router
ID. This is the default.
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Statically—Use the following command to manually configure the router ID:
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To modify the router ID from static to dynamic, set the router ID to 0.0.0.0, save the con-
figuration, and reboot the Web switch. To view the router ID, enter:
Authentication
OSPF protocol exchanges are authenticated so that only trusted routing devices can participate.
This ensures less processing on routing devices that are not listening to OSPF packets.
OSPF allows packet authentication and uses IP multicast when sending and receiving packets.
Routers participate in routing domains based on predefined passwords. Web OS 10.0 supports
simple password authentication (type 1 plain text passwords) only. This type of authentication
allows a password to be configured per area.
Figure 4-4 shows authentication configured for area 0 with the password test. Simple authenti-
cation is also configured for the virtual link between area 2 and area 0. Area 1 is not configured
for OSPF authentication.
Figure 4-4 OSPF Authentication
>> # /cfg/ip/ospf/rtrid <IP address>
>> # /info/ospf/gen
IF 1
Area 1
Area 0
ABR
ABR
ASBR to
External Networks
Area 2 Virtual link
key=alteon
Simple authentication
key=test
IF 3
IF 4
IF 2
IF 5
Web switch 1 Web switch 2 Web switch 3
Web switch 5
Web switch 4