IP Routing Features

Configuring OSPF

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Do not enable redistribution until you have configured the redistribution filters. Otherwise, the network might get overloaded with routes that you did not intend to redistribute.

Example: To configure the Series 5300XL Switch acting as an ASBR to filter out redistribution of static or connected routes on network 10.0.0.0, enter the following commands:

HPswitchASBR(config)# router ospf HPswitch(ospf)# restrict 10.0.0.0 255.0.0.0 HPswitch(ospf)# write memory

Redistribution is permitted for all routes by default.

Syntax: restrict <ip-addr> <ip-mask> <ip-addr/<prefix length>

This command prevents any routes with a destination address that is included in the range specified by the address/mask pair from being redistributed by OSPF.

Modify Default Metric for Redistribution

The default metric is a global parameter that specifies the cost applied to all OSPF routes by default. The default value is 10. You can assign a cost from 1

–16,777,215.

Example: To assign a default metric of 4 to all routes imported into OSPF, enter the following commands:

HPswitch(config)# router ospf

HPswitch(ospf)# default-metric 4

Syntax: default-metric <value>

The <value> can be from 1 – 16,777,215. The default is 10.

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