Cisco Systems OL-4580-01 manual Setting the Cost, Setting the Dead Router Interval

Chapter 3 Configuring Open Shortest Path First (OSPF)

Configuring OSPF on a CSS IP Interface

•Setting the Retransmission Interval

•Setting the Transit-Link Delay

Setting the Cost

To set the cost for sending a data packet on this interface, use the ospf cost command. The cost for the interface is a number from 0 to 65535. The default value of the cost for a given type of circuit is 108/interface speed. For a Gigabit Ethernet interface, the value is 1. For a 10/100-Mbps Fast Ethernet interface, the value is 10.

For example, to set a cost of 25, enter:

(config-circuit-ip[VLAN6-3.1.2.2])# ospf cost 25

To reset the packet cost for the interface to the default value, enter:

(config-circuit-ip[VLAN6-3.1.2.2])# no ospf cost

Setting the Dead Router Interval

The interface declares a neighbor router is dead if the interface does not receive hello packets from the router before the dead interval expires. Use the ospf dead command to set the dead router interval for an interface. The dead router interval is in seconds. This value must be a multiple of the hello interval, and the value must be the same for all routers attached to a common network. Enter a number from 1 to 2,147,483,647. The default is 40.

For example, to set the dead router interval to 100 seconds, enter:

(config-circuit-ip[VLAN6-3.1.2.2])# ospf dead 100

To reset the dead router interval to its default of 40 seconds, enter:

(config-circuit-ip[VLAN6-3.1.2.2])# no ospf dead

Setting the Hello Packet Interval

Router interfaces periodically transmit hello packets to identify and maintain communications with their neighbors. When a router detects its own address in another router’s hello packet, the two routers establish two-way communications as neighbors.

	Cisco Content Services Switch Routing and Bridging Configuration Guide
OL-4580-01		3-25