Asante Technologies 35516 user manual Configure Compatibility, Configure Ospf Interface Parameters

5.7.3 Configure Compatibility

Compatibility configuration enables the router to be compatible with a variety of RFCs that deal with OSPF. Perform the following task to support many different features within the OSPF protocol.

Command	Purpose
compatible rfc1583compatibility	Enable the router to be compatible with the
	specifications in RFC 1583.

5.7.4 Configure OSPF Interface Parameters

The user can alter certain interface-specific OSPF parameters as needed. While the user is not required to alter any of these parameters, some interface parameters must be consistent across all routers in an attached network. Those parameters are controlled by the ip ospf hello-interval, ip ospf dead-interval, and ip ospf authentication-keycommands. Therefore, be sure that if you have configured any of these parameters, the configurations for all routers on your network have compatible values.

In interface configuration mode, specify any of the following interface parameters as needed for the network.

Command	Purpose
ip ospf cost cost	Specify the cost of sending a packet on an OSPF interface. This cost
	value is set to LSA’s* metric field and used for OSPF calculation.
ip ospf retransmit-interval	Specify the number of seconds between link state advertisement
seconds	retransmissions for adjacencies belonging to an OSPF interface. The
	default value is 5 seconds.
ip ospf transmit-delay	Set the estimated number of seconds it takes to transmit a link state
seconds	update packet on an OSPF interface. LSA’s age should be
	incremented by this value when transmitting. The default value is 1
	seconds.
ip ospf priority number	Set priority to help determine the OSPF designated router for a
	network. By setting a higher value, router will be more likely to
	become designated router. The default value is 1.
ip ospf hello-interval	Specify the length of time, in seconds, between the hello packets that
seconds	are sent on an OSPF interface. This value must be the same for all
	routers attached to a common network. The default value is 10
	seconds.
ip ospf dead-interval	Set the number of seconds that a device's hello packets must not
seconds	have been seen before its neighbors declare the OSPF router down.
	This value must be the same for all routers attached to a common
	network. The default value is 40 seconds.
* Link State Advertisement

Command	Purpose
ip ospf authentication-key	Assign a specific password to be used by neighboring OSPF routers
key	on a network segment that is using OSPF's simple password
	authentication. The key length is up to 8 characters.
ip ospf message-digest -key	Set an OSPF MD5 authentication key for cryptographic password.
keyed md5 key	The key length is up to 16 characters.

5.7.5 Configure OSPF Network Type

The user has the choice of configuring the OSPF network type as either broadcast or non-broadcast, regardless of the default media type. They can configure broadcast networks as non-broadcast networks when, for example, there are routers in the network that do not support multicast addressing. The user also can configure the OSPF network type as a point-to-multipoint network when there is a partially meshed network. Routing between two routers not directly connected will go through the router that has virtual circuits to both routers. This feature saves the user from having to configure neighbors.

If an OSPF point-to-multipoint interface is not defined in non-broadcast networks, the user must configure neighbors on OSPF network.

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