OSPF capability vrf-liteの構成・設定

VRFでOSPFを有効にしているが、受信したルートがルーティングテーブルに反映されない場合に capability vrf-lite を指定する。

Topology

Configuration Settings Overview

R3において、OSPFデータベースにArea0のサマリールート(LSA Type-3)が存在するが、ルーティングテーブルに反映されない場合にR3のOSPFプロセス配下で capability vrf-lite を指定。

capability vrf-lite指定前

R3#sh ip route vrf VRF1

Routing Table: VRF1

      3.0.0.0/32 is subnetted, 1 subnets
C        3.3.3.3 is directly connected, Loopback0
      10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        10.2.3.0/24 is directly connected, FastEthernet0/0
L        10.2.3.3/32 is directly connected, FastEthernet0/0

R3#
R3#sh ip ospf database

            OSPF Router with ID (3.3.3.3) (Process ID 1)

                Router Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum Link count
2.2.2.2         2.2.2.2         176         0x80000004 0x009F5D 1
3.3.3.3         3.3.3.3         181         0x80000004 0x00EEE7 2

                Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
10.2.3.2        2.2.2.2         176         0x80000002 0x006C9F

                Summary Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
1.1.1.1         2.2.2.2         176         0x80000002 0x0031FC
2.2.2.2         2.2.2.2         176         0x80000002 0x00F832
10.1.2.0        2.2.2.2         176         0x80000002 0x00B075

capability vrf-lite指定後

R3#sh ip route vrf VRF1

Routing Table: VRF1

      1.0.0.0/32 is subnetted, 1 subnets
O IA     1.1.1.1 [110/3] via 10.2.3.2, 00:00:04, FastEthernet0/0
      2.0.0.0/32 is subnetted, 1 subnets
O IA     2.2.2.2 [110/2] via 10.2.3.2, 00:00:04, FastEthernet0/0
      3.0.0.0/32 is subnetted, 1 subnets
C        3.3.3.3 is directly connected, Loopback0
      10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O IA     10.1.2.0/24 [110/2] via 10.2.3.2, 00:00:04, FastEthernet0/0
C        10.2.3.0/24 is directly connected, FastEthernet0/0
L        10.2.3.3/32 is directly connected, FastEthernet0/0

Dynagen Config File / Router Config

1. Dynagen .net file

2. R1

3. R2

4. R3

show command

R3 : sh ip route vrf VRF1

1. R3 capability vrf-lite 設定前

2. R3 capability vrf-lite 設定後

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