Raina,
Priscilla is right. This would be one of those questions that
are answered based on how the question is interpreted. Yes, you are right
because BGP does use TCP(179), OSPF IP(89) and so on.. However, the
question says which layer does ospf, bgp, and rip work on? The answer is
layer 3, Network layer(routing). The protocol implementation in which they
use TCP(179), IP(89), and UDP(520) would apply to the various mechanisms
used to build, share, and gather the route/"network" information required to
perform the one task they all have in common. "Routing".
HTH
Nigel..
----- Original Message -----
From: "Tribavan Raina"
To:
Sent: Tuesday, September 25, 2001 12:11 AM
Subject: RE: which layer do the ospf bgp rip work on [7:20953]
> I dont agree cos BGP uses TCP for sending route updates and TCP is at
> transport layer.
>
> -----Original Message-----
> From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]]
> Sent: Monday, 24 September 2001 7:27 p.m.
> To: [EMAIL PROTECTED]
> Subject: Re: which layer do the ospf bgp rip work on [7:20953]
>
>
> Network layer. Routing is a fundamental component of the network layer.
>
> At 10:14 PM 9/24/01, lhill peng wrote:
> >which layer do the routing protocol such as ospf rip bgp eigrp work on?
> >sb said that they are on application, others on network
> >what is the right answer??
> ________________________
>
> Priscilla Oppenheimer
> http://www.priscilla.com
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=20963&t=20953
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