distribute list, matching addresses

aueddonlineaueddonline Member Posts: 611 ■■□□□□□□□□
I've configured a lab up R5 is the hub router and has ospf neighbors R4 & R6 and also has rip neighbors R1 & R2

anyway i'm confuring an access-list to match some the addresses R4 has some loopbacks including 172.16.8.1/24

on my acl on R5 it matches to the statement '150 permit 172.16.8.1 (2 matches)' but in the route table the route is ahowing with a 32bit mask and not the 24 bit mask that is configured on the interface ?

any idea why?
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Comments

  • mikej412mikej412 Member Posts: 10,086 ■■■■■■■■■■
    Do a show ip ospf interface loopback # command -- where # is the loopback interface number. What's the Network Type?

    From the OSPF Frequently Asked Questions
    Q. Why are loopbacks advertised as /32 host routes in OSPF?

    A. Loopbacks are considered host routes in OSPF, and they are advertised as /32. For more information, refer to section 9.1 of RFC 2328. In Cisco IOS Software Releases 11.3T and 12.0, if the ip ospf network point-to-point command is configured under loopbacks, OSPF advertises the loopback subnet as the actual subnet configured on loopbacks.
    :mike: Cisco Certifications -- Collect the Entire Set!
  • aueddonlineaueddonline Member Posts: 611 ■■□□□□□□□□
    thanks for that mike, i changed the type to point-to-point, all is well now
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