Rules and Standards

As OSPF has some challenges in deployment outside of a datacenter environment, we will need to all adhere to some rules to prevent from encountering a routing problem.
OSPF, unlike BGP or other protocols, may/will refuse to connect to a peer which has different parameters set and can be a source of confusion.  
Please follow these rules unless there is a good reason not to:

  1. General
    1. All OSPF usage will be on area `0.0.0.0` ( backbone area )
    1. Set Router ID to the 10-69-net address of the Node
    1. All OSPF timers will be set to ( this is typically default ):
      - Link Cost 10
      - Retransmit Interval 5
      - Transmit Delay 1
      - Hello Interval 10
      - Dead Router Interval 40
  1. Interfaces should be in PtMP mode (not broadcast)
  1. OSPF "networks" should only be the 10-69-net, unless there is a special case
  1. Redistribute Default Route should be `never`, unless you are distributing a default route
    1. If you are redistributing a default route, do so `as type 1`
    1. Check with the rest of the network what the correct metric should be
  1. Redistribute user networks via Redistribute Connected `as type 1`
  1. Mikrotik Only: Filter VPN point-to-point /32 links. They cause trouble.
  1. Do not also run BGP, unless there is a special case; take care of metrics in this case.