Must All the Devices on an OSPF NBMA Network Be Fully Meshed?

Created Apr 18, 2017 08:33:56Latest reply Apr 18, 2017 17:13:44 743 2 0 0
Must All the Devices on an OSPF NBMA Network Be Fully Meshed?
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user_2790689  Expert   Created Apr 18, 2017 11:59:16 Helpful(0) Helpful(0)

ding
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Adamcolob     Created Apr 18, 2017 17:13:44 Helpful(0) Helpful(0)

No.

All the devices on an OSPF Non-Boadcast Multi-Access (NBMA) network do not need to be fully meshed. Only the designated router (DR), backup designated router (BDR), and all the neighbors need to be reachable by IP address. Though DR election is not definite, you can set the priority of another device to 0 to prevent the interface from being elected as DR. For a robust network, it is recommended that all the devices on an NBMA network be fully meshed.
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