3Com 3031 Command Reference Manual page 593

3com 3031: reference guide

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ip-address: IP address of the neighboring point.

dr-priority-number: Represents the corresponding value of the network

neighbor priority, being an integer ranging from 0 to 255. The default value is

Using the peer command, you can configure the IP address of adjacent routers

and specify a DR priority on an NBMA network. Using the undo peer command,

you can cancel the configuration.

On the frame relay network, a full-meshed network (i.e. there is a VC directly

connecting any two routers on the network) can be implemented by configuring

map. Thus OSPF can perform in the same way in the frame relay network as in the

broadcast network (such as electing DR and BDR). However, the IP address of

adjacent routers and their election rights must be configured manually for the

interface because adjacent routers cannot be found dynamically by advertising

Hello messages.

Configure the IP address of peer router as 10.1.1.1.

[3Com-ospf-1] peer 10.1.1.1

preference [ ase ] value

undo preference [ ase ]

value: OSPF protocol route preference, ranging from 1 to 255.

ase: Preference of an imported external route of the AS.

Using the preference command, you can configure the preference of an OSPF

protocol route. Using the undo preference command, you can restore the default

value of the OSPF protocol route.

By default, the preference of an OSPF protocol internal route is 10 and the

preference of an external route is 150.

Because multiple dynamic routing protocols could be running on a router, there is

the problem of routing information sharing among routing protocols and

selection. Therefore, a default preference is specified for each routing protocol.

When multiple routes to the same destination are found by different routing

protocols, the route found by high preference routing protocol will be selected to

forward IP packets.

OSPF Configuration Commands