User's Manual

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Enabling OSPF requires that you create an OSPF router ID which is the only identi-
fier in an AS system and area ID which specify the range of routing process.
If the router ID is not configured, the loopback interface IP will be taken as router ID.
If there is no loopback interface, system will select a maximum IP address from all of
interface IPs.
To configure a router ID, complete the following command:
(JadeOS) (config)#router ospf
(JadeOS) (config-router)#ospf router-id <IP>
To configure a area ID, use the following command:
（JadeOS）(config)# router ospf
（JadeOS）(config-router)# area <area id> <parameter>
Note: Please refer to JadeOS Command Manual for more area configuration parameter.
6.7.3 Configuring OSPF Interface Parameters
JadeOS allows you to alter certain interface-specific OSPF parameters as needed. You
are not required to alter any of these parameters, but some interface parameters must
be consistent across all routers in an attached network. Therefore, be sure that if you
do configure any of these parameters, the configurations for all routers on your net-
work have compatible values.
To specify interface parameters as needed for your network, use the any of the com-
mands listed in table 6-1:
Command Purpose
ip ospf cost <value>
Explicitly specify the cost of sending a packet on
an OSPF interface.
ip ospf dead-interval
<value>
Set the number of seconds that a device's hello
packets must not have been seen before its
neighbors declare the OSPF router down.
ip ospf hello-interval
<value>
Specify the length of time between the hello pack-
ets that the Cisco IOS software sends on an OSPF
interface.
ip ospf message-digest-key
<value> <passwd>
Enable OSPF MD5 authentication.
ip ospf priority <value>
Set priority to help determine the OSPF designated
router for a network.
ip ospf retransmit-interval
<value>
Specify the number of seconds between link state
advertisement retransmissions for adjacencies be-
longing to an OSPF interface.
ip ospf transmit-delay
<value>
Set the estimated number of seconds it takes to