Handbook

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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 interface range or in any OSPF area.

The router ID can be configured in one of the following two ways:

Dynamically : OSPF protocol configures the lowest IP interface IP address as the router ID. This is the

default.

Statically : Use the following command to manually configure the router ID

>> # /cfg/l3/rtrid <IP address>

To modify the router ID from static to dynamic, set the router ID to 0.0.0.0, save the configuration, and

reboot the switch. To view the router ID, enter:

>> # /info/l3/ospf/gen

Authentication

OSPF protocol exchanges can be 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. The switch supports simple password

(type 1 plain text passwords) and MD5 cryptographic authentication. This type of authentication allows a

password to be configured per area.

The following figure shows authentication configured for area 0 with the password test. Simple authen-

tication is also configured for the virtual link between area 2 and area 0. Area 1 is not configured for OSPF

authentication.

Figure 19 OSPF authentication

To configure simple plain text OSPF passwords on the switches shown in the figure use the following

commands:

1. Enable OSPF authentication for Area 0 on switches 1, 2, and 3.

>> # /cfg/l3/ospf/aindex 0/auth password

2. Configure a simple text password up to 8characters for each OSPF IP interface in Area 0 on switches

1, 2, and 3.

>> # /cfg/l3/ospf/if 1

>> OSPF Interface 1 # key test

>> OSPF Interface 1 # ../if 2

>> OSPF Interface 2 # key test

>> OSPF Interface 1 # ../if 3

>> OSPF Interface 3 # key test

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