Alcatel Carrier Internetworking Solutions 060187-10 REV D manual Modifying Interface Parameters

Configuring OSPF Configuring OSPF

Modifying Interface Parameters

There are several interface parameters that can be modified on a specified interface. Most of these deal with timer settings.

The cost parameter and the priority parameter help to determine the cost of the route using this interface, and the chance that this interface’s router will become the designated router, respectively.

The following table shows the various interface parameters that can be set:

ip ospf interface dead-interval	Configures OSPF interface dead interval. If no hello packets are
	received in this interval from a neighboring router the neighbor is con-
	sidered dead.
ip ospf interface hello-interval	Configures the OSPF interface interval for NBMA segments.
ip ospf interface cost	Configures the OSPF interface cost. A cost metric refers to the net-
	work path preference assigned to certain types of traffic.
ip ospf interface poll-interval	Configures the OSPF poll interval.
ip ospf interface priority	Configures the OSPF interface priority. The priority number helps
	determine if this router will become the designated router.
ip ospf interface retrans-interval	Configures OSPF interface retransmit interval. The number of sec-
	onds between link state advertisement retransmissions for adjacencies
	belonging to this interface.
ip ospf interface transit-delay	Configures the OSPF interface transit delay. The estimated number of
	seconds required to transmit a link state update over this interface.

These parameters can be added any time. (See “Creating OSPF Interfaces” on page 1-22for more informa- tion.) For example, to set an the dead interval to 50 and the cost to 100 on interface 120.5.80.1, enter the following:

-> ip ospf interface 120.5.80.1 dead-interval 50 cost 100

To set an the poll interval to 25, the priority to 100, and the retransmit interval to 10 on interface 120.5.80.1, enter the following:

-> ip ospf interface 120.5.80.1 poll-interval 25 priority 100 retrans-interval 10

To set the hello interval to 5000 on interface 120.5.80.1, enter the following:

-> ip ospf interface 120.5.80.1 hello-interval 5000

To reset any parameter to its default value, enter the keyword with no parameter value, as shown:

-> ip ospf interface 120.5.80.1 dead-interval

Note. Although you can configure several parameters at once, you can only reset them to the default one at a time.

page 1-24 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005