In my opinion, a tunnel is when you take one packet and encapsulate it with
an additional routing protocol header in order to pass it over a transit
network transparently. So, DLSW uses tunnels, GRE tunnels are obviously
tunnels, PIM register messages are tunnels, etc. That's just a brief
de
>Question came up on the CCIE group revolving around the meaning of the term
"tunnel"
>
>I think I am seeing where the author of the below quote is going. I'm
>wondering if one of the folks on this group might be willing to offer some
>insight.
>
>The question originated with someone calling an O
"Howard C. Berkowitz" wrote:
>
> In the most general sense, a tunnel is a means of taking a protocol
> data unit payload of OSI layer N of protocol family P1: (N,P1)-PDU,
> and transmitting it with a delivery header at layer M of protocol
> family P2. What is actually transmitted is, minimally,
Tunneling, in general, is taking data (whether user data, routing
information, etc), encapsulating it in another protocol for travel (i.e.
TCP/IP), and sending it to a destination where the other end unwraps the
encapsulation and then uses the data (whether user data, routing
information, etc). D
rest the question as to whether of not an OSPF
virtual link is a tunnel. It is not.
Chuck
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Marty Adkins
Sent: Monday, May 28, 2001 7:24 PM
To: [EMAIL PROTECTED]
Subject: Re: Question on the m
erally...
- Original Message -
From: "Chuck Larrieu"
To:
Sent: Tuesday, May 29, 2001 1:18 AM
Subject: RE: Question on the meaning of "tunneling" [7:6136]
> Did some more research. In the context of the question, I went to the RFC
to
> see what the source says. It o
; [EMAIL PROTECTED]
Subject: Re: Question on the meaning of "tunneling" [7:6136]
" Virtual links are part of the backbone, and behave as if they were
unnumbered point-to-point networks between the two routers. "
its a virtual link. its an unnumbered network. a network/seg
From: Peter I. Slow [mailto:[EMAIL PROTECTED]]
> Sent: Monday, May 28, 2001 10:52 PM
> To: Chuck Larrieu; [EMAIL PROTECTED]
> Subject: Re: Question on the meaning of "tunneling" [7:6136]
>
> " Virtual links are part of the backbone, and behave as if they were
&g
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