Can you have OSPF without area 0 at all?

From: Sam Munzani (sam@munzani.com)
Date: Fri Feb 14 2003 - 15:56:24 GMT-3

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Team,

I came across an interesting finding. I want to take everybody's opinion on this before putting anything in production. We are building an OSPF network that will eventually merge with company's main OSPF backbone network. The core group has assigned us ospf area number 555.

When I configure all my routers with OSPF area 555(with no area 0 at all), it seems to be building up routing table. I always thought OSPF needs area 0 to function. Will this work of we add a non cisco device with area 555 configuration?

What is the catch 22 in this configuration? I have started reading OSPF RFC to figure out all technical details.

Thanks,
Sam Munzani

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Maybe reply: Frank Maisano: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Brian McGahan: "RE: Can you have OSPF without area 0 at all?"
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Maybe reply: Howard C. Berkowitz: "Re: Can you have OSPF without area 0 at all?"
Maybe reply: Jonathan R. Charles: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Mark Miller: "Re: Can you have OSPF without area 0 at all?"
Maybe reply: Jonathan V Hays: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Howard C. Berkowitz: "Re: Can you have OSPF without area 0 at all?"
Maybe reply: FLCCNP@aol.com: "Re: Can you have OSPF without area 0 at all?"
Maybe reply: Joe: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: mdye@bevillcntr.org: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Muyeenp@aol.com: "Re: Can you have OSPF without area 0 at all?"
Maybe reply: Georg Pauwen: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: tsiartas@ameritech.net: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Jason Sinclair: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Michael Snyder: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Georg Pauwen: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Jason Sinclair: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Jerry: "Re: Can you have OSPF without area 0 at all?"
Maybe reply: Peter van Oene: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Chris Johnston: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: OhioHondo: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Alexander Arsenyev (ETL): "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Alexander Arsenyev (ETL): "RE: Can you have OSPF without area 0 at all?"
Maybe reply: OhioHondo: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Jay Hennigan: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: SUBODH MUNZANI: "Re: Can you have OSPF without area 0 at all?"
Maybe reply: Daniel Cisco Group Study: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Ouellette, Tim: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Copleston Daniel: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Ryan B: "Re: Can you have OSPF without area 0 at all?"
Maybe reply: balaji.balakrishnan: "Re: Can you have OSPF without area 0 at all?"
Maybe reply: Aaron Woody: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: McCallum, Robert: "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Casey, Paul (6822): "RE: Can you have OSPF without area 0 at all?"
Maybe reply: Georg Pauwen: "RE: Can you have OSPF without area 0 at all?"
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