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13. LSA2 of OSPF configuration experiment

Shulou Source: shulou.com Published: 2022-06-01 07:47:59 10月03日 Update

1. Network LSAs parsing

LSA type advertiser propagates range advertisements content Link IDADV Router remarks LSA1 all routers have the same Area route, topology RIDRID

LSA2DR same Area mask, routing DR IPDR RIP only MA network

LSA1 Router LSA (Router LSA)

LSA2 Network LSA (Network LSA)

2. Experimental topology

3. Experimental configuration

R1 configuration

Interface Loopback0

Ip address 1.1.1.1 255.255.255.0

Interface Serial0/0

Ip address 12.1.1.1 255.255.255.0

Interface FastEthernet1/0

Ip address 120.1.1.1 255.255.255.0

Router ospf 110

Router-id 8.8.8.1

Network 1.1.1.0 0.0.0.255 area 0

Network 12.1.1.0 0.0.0.255 area 0

Network 120.1.1.0 0.0.0.255 area 0

R2 configuration

Interface Loopback0

Ip address 2.2.2.2 255.255.255.0

Interface Serial0/0

Ip address 12.1.1.2 255.255.255.0

Interface FastEthernet1/0

Ip address 120.1.1.2 255.255.255.0

Router ospf 110

Router-id 8.8.8.2

Network 2.2.2.0 0.0.0.255 area 0

Network 12.1.1.0 0.0.0.255 area 0

Network 120.1.1.0 0.0.0.255 area 0

4. Conclusion verification

Link ID is DR IP and ADV Router is DR Router ID.

The advertised content is mask and topology

The above four figures also verify the conclusion that routers in the same area have the same LSDB.

At this point, we can confirm a route with the masks provided by IP, Metric, and LSA2 provided by LSA1.