distribute-list problem

Discussion in 'Cisco' started by dwhkt@hotmail.com, May 17, 2005.

  1. Guest

    Hi all,

    I don't understand why the following prefix list returns no result.
    When no prefix list is configured, the route exists in the route table.
    Someone please help and many thanks!!!

    ip prefix-list Nontrading seq 2 permit 192.168.21.0/24

    hktco

    ==========

    r2#sh ip os ne

    Neighbor ID Pri State Dead Time Address
    Interface
    1.1.1.1 1 FULL/BDR 00:00:35 192.168.1.1
    FastEthernet0.1
    r2#sh run
    Building configuration...

    interface Loopback0
    ip address 2.2.2.2 255.255.255.255
    !
    interface FastEthernet0
    no ip address
    no ip redirects
    no ip proxy-arp
    speed auto
    no cdp enable
    !
    interface FastEthernet0.1
    encapsulation dot1Q 2 native
    ip address 192.168.1.2 255.255.255.0
    no ip redirects
    no ip proxy-arp
    standby 11 ip 192.168.1.253
    standby 11 priority 95
    standby 11 preempt
    standby 12 ip 192.168.1.254
    standby 12 preempt
    !
    !
    interface Async5
    ip address 10.2.2.2 255.255.255.0
    no ip redirects
    no ip proxy-arp
    encapsulation ppp
    ip ospf cost 10000
    async dynamic routing
    async mode dedicated
    no peer neighbor-route
    no keepalive
    cdp enable
    !
    router ospf 100
    router-id 2.2.2.2
    log-adjacency-changes
    redistribute static metric-type 1 subnets
    network 0.0.0.0 255.255.255.255 area 0
    distribute-list prefix Nontrading in
    !
    ip classless
    ip route 192.168.11.0 255.255.255.0 192.168.1.100
    ip route 192.168.12.0 255.255.255.0 192.168.1.100
    no ip http server
    no ip http secure-server
    !
    !
    !
    ip prefix-list Nontrading seq 10 permit 0.0.0.0/0 le 32
    r2#sh ip ro os
    1.0.0.0/32 is subnetted, 1 subnets
    O 1.1.1.1 [110/2] via 192.168.1.1, 00:00:20, FastEthernet0.1
    3.0.0.0/32 is subnetted, 1 subnets
    O 3.3.3.3 [110/10002] via 192.168.1.1, 00:00:20, FastEthernet0.1
    4.0.0.0/32 is subnetted, 1 subnets
    O 4.4.4.4 [110/10003] via 192.168.1.1, 00:00:20, FastEthernet0.1
    O E1 192.168.21.0/24 [110/10022] via 192.168.1.1, 00:00:20,
    FastEthernet0.1
    10.0.0.0/24 is subnetted, 2 subnets
    O 10.1.1.0 [110/10001] via 192.168.1.1, 00:00:20, FastEthernet0.1
    O E1 192.168.22.0/24 [110/10022] via 192.168.1.1, 00:00:20,
    FastEthernet0.1
    O 192.168.2.0/24 [110/10002] via 192.168.1.1, 00:00:20,
    FastEthernet0.1
    r2#conf t
    Enter configuration commands, one per line. End with CNTL/Z.
    r2(config)#ip pre
    r2(config)#ip prefix-list Nontrading seq 1 deny 192.168.22.0/24
    r2(config)#^Z
    r2#sh run | in ip pref
    ip prefix-list Nontrading seq 1 deny 192.168.22.0/24
    ip prefix-list Nontrading seq 5 permit 0.0.0.0/0 le 32
    r2#sh ip ro os
    1.0.0.0/32 is subnetted, 1 subnets
    O 1.1.1.1 [110/2] via 192.168.1.1, 00:00:24, FastEthernet0.1
    3.0.0.0/32 is subnetted, 1 subnets
    O 3.3.3.3 [110/10002] via 192.168.1.1, 00:00:24, FastEthernet0.1
    4.0.0.0/32 is subnetted, 1 subnets
    O 4.4.4.4 [110/10003] via 192.168.1.1, 00:00:24, FastEthernet0.1
    O E1 192.168.21.0/24 [110/10022] via 192.168.1.1, 00:00:24,
    FastEthernet0.1
    10.0.0.0/24 is subnetted, 2 subnets
    O 10.1.1.0 [110/10001] via 192.168.1.1, 00:00:24, FastEthernet0.1
    O 192.168.2.0/24 [110/10002] via 192.168.1.1, 00:00:24,
    FastEthernet0.1
    r2#conf t
    Enter configuration commands, one per line. End with CNTL/Z.
    r2(config)#ip prefix-list Nontrading seq 2 deny 192.168.21.0/24
    r2(config)#^Z
    r2#sh ip ro os
    1.0.0.0/32 is subnetted, 1 subnets
    O 1.1.1.1 [110/2] via 192.168.1.1, 00:00:02, FastEthernet0.1
    3.0.0.0/32 is subnetted, 1 subnets
    O 3.3.3.3 [110/10002] via 192.168.1.1, 00:00:02, FastEthernet0.1
    4.0.0.0/32 is subnetted, 1 subnets
    O 4.4.4.4 [110/10003] via 192.168.1.1, 00:00:02, FastEthernet0.1
    10.0.0.0/24 is subnetted, 2 subnets
    O 10.1.1.0 [110/10001] via 192.168.1.1, 00:00:02, FastEthernet0.1
    O 192.168.2.0/24 [110/10002] via 192.168.1.1, 00:00:02,
    FastEthernet0.1
    r2#conf t
    Enter configuration commands, one per line. End with CNTL/Z.
    r2(config)#no ip pre Nontrading seq 1
    r2#sh run | in ip pref
    ip prefix-list Nontrading seq 1 deny 192.168.22.0/24
    ip prefix-list Nontrading seq 2 deny 192.168.21.0/24
    ip prefix-list Nontrading seq 5 permit 0.0.0.0/0 le 32
    r2#sr os
    1.0.0.0/32 is subnetted, 1 subnets
    O 1.1.1.1 [110/2] via 192.168.1.1, 00:00:32, FastEthernet0.1
    3.0.0.0/32 is subnetted, 1 subnets
    O 3.3.3.3 [110/10002] via 192.168.1.1, 00:00:32, FastEthernet0.1
    4.0.0.0/32 is subnetted, 1 subnets
    O 4.4.4.4 [110/10003] via 192.168.1.1, 00:00:32, FastEthernet0.1
    10.0.0.0/24 is subnetted, 2 subnets
    O 10.1.1.0 [110/10001] via 192.168.1.1, 00:00:32, FastEthernet0.1
    O 192.168.2.0/24 [110/10002] via 192.168.1.1, 00:00:32,
    FastEthernet0.1
    r2#conf t
    Enter configuration commands, one per line. End with CNTL/Z.
    r2(config)#no ip prefix-list Nontrading seq 1 deny 192.168.22.0/24
    r2(config)#^Z
    r2#sr os
    1.0.0.0/32 is subnetted, 1 subnets
    O 1.1.1.1 [110/2] via 192.168.1.1, 00:00:03, FastEthernet0.1
    3.0.0.0/32 is subnetted, 1 subnets
    O 3.3.3.3 [110/10002] via 192.168.1.1, 00:00:03, FastEthernet0.1
    4.0.0.0/32 is subnetted, 1 subnets
    O 4.4.4.4 [110/10003] via 192.168.1.1, 00:00:03, FastEthernet0.1
    10.0.0.0/24 is subnetted, 2 subnets
    O 10.1.1.0 [110/10001] via 192.168.1.1, 00:00:03, FastEthernet0.1
    O E1 192.168.22.0/24 [110/10022] via 192.168.1.1, 00:00:03,
    FastEthernet0.1
    O 192.168.2.0/24 [110/10002] via 192.168.1.1, 00:00:03,
    FastEthernet0.1
    r2#conf t
    Enter configuration commands, one per line. End with CNTL/Z.
    r2(config)#no ip prefix-list Nontrading seq 2 deny 192.168.21.0/24
    r2(config)#ip prefix-list Nontrading seq 2 per 192.168.21.0/24
    r2(config)#^Z
    r2#sh ip ro os
    1.0.0.0/32 is subnetted, 1 subnets
    O 1.1.1.1 [110/2] via 192.168.1.1, 00:00:02, FastEthernet0.1
    3.0.0.0/32 is subnetted, 1 subnets
    O 3.3.3.3 [110/10002] via 192.168.1.1, 00:00:02, FastEthernet0.1
    4.0.0.0/32 is subnetted, 1 subnets
    O 4.4.4.4 [110/10003] via 192.168.1.1, 00:00:02, FastEthernet0.1
    O E1 192.168.21.0/24 [110/10022] via 192.168.1.1, 00:00:02,
    FastEthernet0.1
    10.0.0.0/24 is subnetted, 2 subnets
    O 10.1.1.0 [110/10001] via 192.168.1.1, 00:00:02, FastEthernet0.1
    O E1 192.168.22.0/24 [110/10022] via 192.168.1.1, 00:00:02,
    FastEthernet0.1
    O 192.168.2.0/24 [110/10002] via 192.168.1.1, 00:00:02,
    FastEthernet0.1
    r2#
    r2#sh run | in pref
    distribute-list prefix Nontrading in
    ip prefix-list Nontrading description Disallow non-trading traffic to
    use the IPLC
    ip prefix-list Nontrading seq 2 permit 192.168.21.0/24
    ip prefix-list Nontrading seq 5 permit 0.0.0.0/0 le 32
    r2#conf t
    Enter configuration commands, one per line. End with CNTL/Z.
    r2(config)#no ip prefix-list Nontrading seq 5 permit 0.0.0.0/0 le 32
    r2(config)#^Z
    r2#sh run | in pref
    distribute-list prefix Nontrading in
    ip prefix-list Nontrading seq 2 permit 192.168.21.0/24
    r2#sh ip ro os

    r2#debug ip routing
    IP routing debugging is on
    ! TELNET INTO ROUTER TO CHANGE THE DISTRIBUTE-LIST
    r2#
    !ALLOW ALL 0.0.0.0/0 le 32
    000044: *Mar 1 08:45:53.195: RT: add 10.1.1.0/24 via 192.168.1.1, ospf
    metric [110/10001]
    000045: *Mar 1 08:45:53.195: RT: NET-RED 10.1.1.0/24
    000046: *Mar 1 08:45:53.195: RT: NET-RED queued, Queue size 1
    000047: *Mar 1 08:45:53.195: RT: add 192.168.2.0/24 via 192.168.1.1,
    ospf metric [110/10002]
    000048: *Mar 1 08:45:53.195: RT: NET-RED 192.168.2.0/24
    000049: *Mar 1 08:45:53.199: RT: NET-RED queued, Queue size 2
    000050: *Mar 1 08:45:53.199: RT: add 1.1.1.1/32 via 192.168.1.1, ospf
    metric [110/2]
    000051: *Mar 1 08:45:53.199: RT: NET-RED 1.1.1.1/32
    000052: *Mar 1 08:45:53.199: RT: NET-RED queued, Queue size 3
    000053: *Mar 1 08:45:53.199: RT: add 3.3.3.3/32 via 192.168.1.1, ospf
    metric [110/10002]
    000054: *Mar 1 08:45:53.199: RT: NET-RED 3.3.3.3/32
    000055: *Mar 1 08:45:53.199: RT: NET-RED queued, Queue size 4
    000056: *Mar 1 08:45:53.203: RT: add 4.4.4.4/32 via 192.168.1.1, ospf
    metric [110/10003]
    000057: *Mar 1 08:45:53.203: RT: NET-RED 4.4.4.4/32
    000058: *Mar 1 08:45:53.203: RT: NET-RED queued, Queue size 5
    000059: *Mar 1 08:45:53.203: RT: add 192.168.21.0/24 via 192.168.1.1,
    ospf metric [110/10022]
    000060: *Mar 1 08:45:53.203: RT: NET-RED 192.168.21.0/24
    000061: *Mar 1 08:45:53.203: RT: NET-RED queued, Queue size 6
    000062: *Mar 1 08:45:53.203: RT: add 192.168.22.0/24 via 192.168.1.1,
    ospf metric [110/10022]
    000063: *Mar 1 08:45:53.207: RT: NET-RED 192.168.22.0/24
    000064: *Mar 1 08:45:53.207: RT: NET-RED queued, Queue size 7
    !ALLOW ONLY 192.168.21.0/24
    000065: *Mar 1 08:46:16.355: RT: delete route to 1.1.1.1/32
    000066: *Mar 1 08:46:16.355: RT: NET-RED 1.1.1.1/32
    000067: *Mar 1 08:46:16.355: RT: NET-RED queued, Queue size 1
    000068: *Mar 1 08:46:16.355: RT: delete network route to 1.0.0.0
    000069: *Mar 1 08:46:16.355: RT: NET-RED 1.0.0.0/8
    000070: *Mar 1 08:46:16.355: RT: NET-RED queued, Queue size 2
    000071: *Mar 1 08:46:16.359: RT: delete route to 3.3.3.3/32
    000072: *Mar 1 08:46:16.359: RT: NET-RED 3.3.3.3/32
    000073: *Mar 1 08:46:16.359: RT: NET-RED queued, Queue size 3
    000074: *Mar 1 08:46:16.359: RT: delete network route to 3.0.0.0
    000075: *Mar 1 08:46:16.359: RT: NET-RED 3.0.0.0/8
    000076: *Mar 1 08:46:16.359: RT: NET-RED queued, Queue size 4
    000077: *Mar 1 08:46:16.363: RT: delete route to 4.4.4.4/32
    000078: *Mar 1 08:46:16.363: RT: NET-RED 4.4.4.4/32
    000079: *Mar 1 08:46:16.363: RT: NET-RED queued, Queue size 5
    000080: *Mar 1 08:46:16.363: RT: delete network route to 4.0.0.0
    000081: *Mar 1 08:46:16.363: RT: NET-RED 4.0.0.0/8
    000082: *Mar 1 08:46:16.363: RT: NET-RED queued, Queue size 6
    000083: *Mar 1 08:46:16.367: RT: delete route to 192.168.21.0/24
    000084: *Mar 1 08:46:16.367: RT: NET-RED 192.168.21.0/24
    000085: *Mar 1 08:46:16.367: RT: NET-RED queued, Queue size 7
    000086: *Mar 1 08:46:16.367: RT: delete route to 10.1.1.0/24
    000087: *Mar 1 08:46:16.367: RT: NET-RED 10.1.1.0/24
    000088: *Mar 1 08:46:16.367: RT: NET-RED queued, Queue size 8
    000089: *Mar 1 08:46:16.371: RT: delete route to 192.168.22.0/24
    000090: *Mar 1 08:46:16.371: RT: NET-RED 192.168.22.0/24
    000091: *Mar 1 08:46:16.371: RT: NET-RED queued, Queue size 9
    000092: *Mar 1 08:46:16.371: RT: delete route to 192.168.2.0/24
    000093: *Mar 1 08:46:16.375: RT: NET-RED 192.168.2.0/24
    000094: *Mar 1 08:46:16.375: RT: NET-RED queued, Queue size 10
    000095: *Mar 1 08:46:16.927: %SYS-5-CONFIG_I: Configured from console
    by vty0 (192.168.1.1)
    r2#
    , May 17, 2005
    #1
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