OSPF: area filter-list

From: cadet (cadet22@gmail.com)
Date: Sun Nov 26 2006 - 10:27:47 ART


Hi GROUP,
I have problem with OSPF ABR Type 3 LSA Filtering.
I want on R5 block all LSA 3 (IA O) routes from area 1.

R3 = ABR area1 and area0
R5 = area0

R3
router ospf 1
 area 1 filter-list prefix test44 out

ip prefix-list test44 seq 10 deny 0.0.0.0/0 le 32

R5
router ospf 1
 area 0 filter-list prefix test44 in

ip prefix-list test44 seq 10 deny 0.0.0.0/0 le 32

But on R5 I have:
r5#sh ip route ospf
     10.0.0.0/8 is variably subnetted, 10 subnets, 3 masks
O E1 10.10.11.0/24 [110/125] via 14.14.30.3, 00:03:18, Virtual-Access1
O E1 10.10.12.0/24 [110/125] via 14.14.30.3, 00:03:18, Virtual-Access1
O E1 10.10.13.0/24 [110/125] via 14.14.30.3, 00:03:18, Virtual-Access1
O E1 10.10.14.0/24 [110/125] via 14.14.30.3, 00:03:18, Virtual-Access1
O E1 10.10.15.0/24 [110/125] via 14.14.30.3, 00:03:18, Virtual-Access1
O E1 10.10.16.0/24 [110/125] via 14.14.30.3, 00:03:18, Virtual-Access1
O E2 10.10.20.0/22 [110/50] via 14.14.30.3, 00:03:18, Virtual-Access1
O E2 10.10.24.0/24 [110/50] via 14.14.30.3, 00:03:18, Virtual-Access1
O E2 10.10.25.0/24 [110/50] via 14.14.30.3, 00:03:18, Virtual-Access1
     14.0.0.0/8 is variably subnetted, 17 subnets, 2 masks
O IA 14.14.8.8/32 [110/76] via 14.14.30.3, 00:03:18, Virtual-Access1
O IA 14.14.7.7/32 [110/67] via 14.14.30.3, 00:03:18, Virtual-Access1
O 14.14.6.6/32 [110/67] via 14.14.30.3, 00:03:18, Virtual-Access1
O 14.14.3.3/32 [110/2] via 14.14.30.3, 00:03:19, Virtual-Access1
O IA 14.14.2.2/32 [110/130] via 14.14.30.3, 00:03:19, Virtual-Access1
O 14.14.1.1/32 [110/66] via 14.14.30.3, 00:03:19, Virtual-Access1
O E1 14.14.4.0/24 [110/125] via 14.14.30.3, 00:03:19, Virtual-Access1
O IA 14.14.10.0/24 [110/129] via 14.14.30.3, 00:03:19, Virtual-Access1
O 14.14.20.0/24 [110/66] via 14.14.30.3, 00:03:19, Virtual-Access1
O IA 14.14.40.0/24 [110/66] via 14.14.30.3, 00:03:19, Virtual-Access1
O IA 14.14.50.0/24 [110/75] via 14.14.30.3, 00:03:19, Virtual-Access1
O E2 14.14.60.0/24 [110/50] via 14.14.30.3, 00:03:19, Virtual-Access1
O E1 14.14.70.0/24 [110/125] via 14.14.30.3, 00:03:21, Virtual-Access1
O E2 14.14.100.0/24 [110/50] via 14.14.30.3, 00:03:21, Virtual-Access1

Among them:

r5#sh ip ospf database summary

            OSPF Router with ID (14.14.5.5) (Process ID 1)

                Summary Net Link States (Area 0)

  Routing Bit Set on this LSA
  LS age: 2 (DoNotAge)
  Options: (No TOS-capability, DC, Upward)
  LS Type: Summary Links(Network)
  Link State ID: 14.14.2.2 (summary Network Number)
  Advertising Router: 14.14.1.1
  LS Seq Number: 80000001
  Checksum: 0x902D
  Length: 28
  Network Mask: /32
        TOS: 0 Metric: 65

  Routing Bit Set on this LSA
  LS age: 2 (DoNotAge)
  Options: (No TOS-capability, DC, Upward)
  LS Type: Summary Links(Network)
  Link State ID: 14.14.7.7 (summary Network Number)
  Advertising Router: 14.14.2.2
  LS Seq Number: 80000001
  Checksum: 0xA14F
  Length: 28
  Network Mask: /32
        TOS: 0 Metric: 2

  Routing Bit Set on this LSA
  LS age: 13 (DoNotAge)
  Options: (No TOS-capability, DC, Upward)
  LS Type: Summary Links(Network)
  Link State ID: 14.14.8.8 (summary Network Number)
  Advertising Router: 14.14.2.2
  LS Seq Number: 80000001
  Checksum: 0xE6FE
  Length: 28
  Network Mask: /32
        TOS: 0 Metric: 11

  Routing Bit Set on this LSA
  LS age: 1605 (DoNotAge)
  Options: (No TOS-capability, DC, Upward)
  LS Type: Summary Links(Network)
  Link State ID: 14.14.10.0 (summary Network Number)
  Advertising Router: 14.14.1.1
  LS Seq Number: 80000007
  Checksum: 0x367C
  Length: 28
  Network Mask: /24
        TOS: 0 Metric: 64

  Routing Bit Set on this LSA
  LS age: 2 (DoNotAge)
  Options: (No TOS-capability, DC, Upward)
  LS Type: Summary Links(Network)
  Link State ID: 14.14.40.0 (summary Network Number)
  Advertising Router: 14.14.2.2
  LS Seq Number: 80000015
  Checksum: 0x497A
  Length: 28
  Network Mask: /24
        TOS: 0 Metric: 1

  Routing Bit Set on this LSA
  LS age: 13 (DoNotAge)
  Options: (No TOS-capability, DC, Upward)
  LS Type: Summary Links(Network)
  Link State ID: 14.14.50.0 (summary Network Number)
  Advertising Router: 14.14.2.2
  LS Seq Number: 80000001
  Checksum: 0x5D67
  Length: 28
  Network Mask: /24
        TOS: 0 Metric: 10



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