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OSPF Topology

Hey Guys,

So I am trying to setup a lab and trying to work out the best topology for OSPF.

Setup:

  • 2 x Data Centers.
  • Pair of ASR routers at each DC running as a resilient pair.
  • 2 x 1GB LAN Links the between the DC's.

The idea is the physical topology woudl be like this, essentially creating a route loop:

DC1-ASR1 Int 1: - Link to DC1-ASR2

DC1-ASR1 Int 2: - Link to DC2-ASR1

DC1-ASR1 Int 3: - Link to WANA

DC1-ASR1 Int 4: - Link to LANA

DC1-ASR2 Int 1: - Link to DC1-ASR1

DC1-ASR2 Int 2: - Link to DC2-ASR2

DC1-ASR2 Int 3: - Link to WANA

DC1-ASR2 Int 4: - Link to LANA

DC2-ASR1 Int 1: - Link to DC2-ASR2

DC2-ASR1 Int 2: - Link to DC1-ASR1

DC2-ASR1 Int 3: - Link to WANB

DC2-ASR1 Int 4: - Link to LANB

DC2-ASR2 Int 1: - Link to DC2-ASR1

DC2-ASR2 Int 2: - Link to DC1-ASR2

DC2-ASR2 Int 3: - Link to WANB

DC2-ASR2 Int 4: - Link to LANB

What is the best practice for the OSPF routing topology? IE what areas do I put each link in?

The LAN and WAN subnets need to be routable between both DC's.

Thanks

David

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