OSPF ABR Type 3 LSA filtering using access lists

OSPF ABR Type 3 LSA Filtering on a Cisco IOS device can be achieved only using prefix lists. Access lists will not work. This context-sensitive help output confirms this:

Router(config-router)#area 3 filter-list ? prefix Filter prefixes between OSPF areas Router(config-router)#area 3 filter-list prefix ? WORD Name of an IP prefix-list

As you can see, the only option available when using the filter-list keyword is prefix. access-list is unavailable as an option.




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