What would you say they are then?Not all protocols have a direct
presentation and session layer. That's why these are combined in the IP
model. Since they rely on another transport protocol, they aren't the same
as OSPF and EIGRP. I would definitely say BGP and RIP are protocols that run
in the application layer.


-- 
Regards,

Rick Mur
CCIE2 #21946 (R&S / Service Provider)
Juniper JNCIA-ER & JNCIA-EX
MCSA:Messaging, MCSE
Sr. Support Engineer – IPexpert, Inc.
URL: http://www.IPexpert.com

On Wed, Aug 19, 2009 at 10:51 AM, desmond Black <[email protected]>wrote:

>
> Both RIP and BGP are applications in what sense? Only because they use the
> Port-numbers for identicification & that EIGRP, OSPF, ISIS etc dont?
> Transport Layer is Port numbers [in a very raw sense]. What Presentation
> Layer protocol does BGP & RIP use? And What Application Layer thing are we
> talking about for running them??
> I personally think its just a sham to write these Protocols off as
> Application layer Protocols.
>
> ----- Original Message -----
> From: "Dale Shaw"
> To: "Taqdir Singh"
> Cc: [email protected]
> Subject: Re: [OSL | CCIE_RS] RIP and BGP are application layer protocol
> Date: Wed, 19 Aug 2009 17:07:07 +1000
>
>
> Hi,
>
> On Wed, Aug 19, 2009 at 4:58 PM, Taqdir Singh wrote:
> > TCP and UDP are transport layer protocols. RIP uses UDP and BGP uses
> TCP..
> >
> > Please clear more how RIP and BGP are application layer ?
>
> This is pretty standard OSI model stuff. C'mon, do we really need to
> cover it here?
>
> Both RIP and BGP are applications and therefore have an application
> layer. The transport layer protocol employed is largely irrelevant.
>
> Cheers,
> Dale
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>
> Desmond Black,
> In Pursuit of CCIE!!
> India
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