Configuring OSPF
December 2005 © Foundry Networks, Inc. 20 - 27
NOTE: If you enable the software to display IP sub-net masks in CIDR format, the mask is saved in the file in
“/<mask-bits>” format. To enable the software to display the CIDR masks, enter the ip show-subnet-length
command at the global CONFIG level of the CLI. You can use the CIDR format to configure the ACL entry
regardless of whether the software is configured to display the masks in CIDR format.
If you use the CIDR format, the ACL entries appear in this format in the running-config and startup-config files, but
are shown with sub-net mask in the display produced by the show ip access-list commands.
The <destination-ip> <wildcard> parameter specifies the destination address for the policy. Since this ACL is input
to an OSPF distribution list, the <destination-ip> parameter actually is specifying the network mask of the
destination. The <wildcard> parameter specifies the portion of the destination address to match against. If you
want the policy to match on all network masks, enter any any.
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 – 15.
NOTE: You also can define the cost on individual interfaces. The interface cost overrides the default cost.
To assign a default metric of 4 to all routes imported into OSPF, enter the following commands:
FESX424 Router(config)# router ospf
FESX424 Router(config-ospf-router)# default-metric 4
Syntax: default-metric <value>
The <value> can be from 1 – 16,777,215. The default is 10.
Enable Route Redistribution
To enable route redistribution, use one of the following methods.
NOTE: Do not enable redistribution until you have configured the redistribution filters. Otherwise, you might
accidentally overload the network with routes you did not intend to redistribute.
To enable redistribution of RIP and static IP routes into OSPF, enter the following commands.
FESX424 Router(config)# router ospf
FESX424 Router(config-ospf-router)# redistribution rip
FESX424 Router(config-ospf-router)# redistribution static
FESX424 Router(config-ospf-router)# write memory
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