----- Original Message -----
From: "Priscilla Oppenheimer" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, November 12, 2000 3:39 AM
Subject: Re: routing protocols vs Tcp/ip model
> Routing protocols have network-layer functionality, regardless of whether
> they use an IP header, IP/UDP header, IP/BGP header, or no header at all
> above the MAC header (IS-IS) to transfer their information.
>
> If we can't agree that routing protocols have network-layer functionality,
> we should just throw in the towel and agree that pigs have wings.
>
> Priscilla
>
>
> At 06:41 AM 11/11/00, George Susini wrote:
> >According to the Cisco BSCN material,
> >
> >IGRP uses protocol number 9 and exist at layer 4
> >
> >RIP uses protocol number 520 (UDP) and exist at layer 7
> >
> >OSPF uses protocol number 89 but does not idicate where it resides
> >
> >EIGRP uses protocol number 88 resides at layer 4
> >
> >and BGP uses port number 179 and relies on TCP
> >
> >Very confusing .............
> >----- Original Message -----
> >From: "Chuck Larrieu" <[EMAIL PROTECTED]>
> >To: "Zhang Jin" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
> >Sent: Saturday, November 11, 2000 12:18 AM
> >Subject: RE: routing protocols vs Tcp/ip model
> >
> >
> > > Recently an instructor in a class I was taking said something I found
> > > interesting. I hope I can do justice to his words.
> > >
> > > Network layer: IP IP IP
> > > Transport layer: TCP UDP
> > > Application layer: BGP RIP EIGRP, OSPF, IGRP
> > >
> > > In other words, he suggested that routing protocols are application
layer,
> > > and use the chosen transport or network layer protocols to
communicate.
> > > Other reading I have done kinda says this in other ways. RIP uses UDP
port
> > > 500. BGP, as we all know, uses TCP.
> > >
> > > Does this make sense?
> > >
> > > Chuck
> > >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf
Of
> > > Zhang Jin
> > > Sent: Thursday, November 09, 2000 11:11 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: routing protocols vs Tcp/ip model
> > >
> > > Dear group,
> > >
> > > Am I correct for locate routing protocols in TCP/IP model as follows:
> > > EIGRP,OSPF=network
> > > BGP,RIP=Application
> > >
> > > correct me.
> > >
> > > TIA
> > > Dean
> > >
> > >
> > > _________________________________
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> > >
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> >
> >_________________________________
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>
>
> ________________________
>
> Priscilla Oppenheimer
> http://www.priscilla.com
>
> _________________________________
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