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3Com Switch 7750 Series
Command Reference Guide – Routing Protocol Chapter 3 OSPF Configuration Commands
3-48
Description
Use the peer command to configure the IP address of the neighbor router and specify
DR priority on an NBMA network.
Use the undo peer command to cancel this configuration.
Example
# Configure the IP address of the neighbor router as 10.1.1.1.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] ospf 1
[3Com-ospf-1] peer 10.1.1.1
3.1.43 preference
Syntax
preference [ ase ] value
undo preference [ ase ]
View
OSPF view
Parameter
value: OSPF protocol route preference, ranging from 1 to 255.
ase: Indicates the preference of an imported external route of the AS.
Description
Use the preference command to configure the preference of an OSPF protocol route.
Use the undo preference command to 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 a route is
identified by different protocols, the protocol with the highest preference selected for
forwarding IP packets.
Example
# Specify the preference of an imported external route of the AS as 160.
<3Com> system-view