- Original Message -
From: "Priscilla Oppenheimer"
To:
Sent: 11 September 2002 6:45 pm
Subject: RE: The Origin of Echos and Echo Replies [7:53148]
> To be absolutely sure I would want to use a serial protocol analyzer, but
> alas, those are too expensive for the self-e
Cisco Systems
De Kleetlaan 6b - Pegasus Park
B-1831 Diegem (Belgium)
-Original Message-
From: Marty Adkins [mailto:[EMAIL PROTECTED]]
Sent: donderdag 12 september 2002 6:19
To: [EMAIL PROTECTED]
Subject: Re: The Origin of Echos and Echo Replies [7:53148]
Priscilla Oppenheimer wrote
Priscilla Oppenheimer wrote:
>
> Interesting test. I think I understand it. ;-)
>
> Where are the debugs being run, by the way? The local router that is
pinging
> or the router at the other end? It looks like they are on the local router
> doing the pings? Try running them on the other router. B
-
From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 11, 2002 10:02 PM
To: [EMAIL PROTECTED]
Subject: RE: The Origin of Echos and Echo Replies [7:53148]
Interesting test. I think I understand it. ;-)
Where are the debugs being run, by the way? The local router that
; Thanks
>
> Larry
>
>
> -----Original Message-----
> From: s vermill [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, September 11, 2002 8:35 PM
> To: [EMAIL PROTECTED]
> Subject: Re: The Origin of Echos and Echo Replies [7:53148]
>
>
> Marty,
>
>
behavior ?
Thanks
Larry
-Original Message-
From: s vermill [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 11, 2002 8:35 PM
To: [EMAIL PROTECTED]
Subject: Re: The Origin of Echos and Echo Replies [7:53148]
Marty,
And I forgot to ask below, any thoughts as to whether or not the
It munged the picture. That e0 is on Charlotte, not Boston.
Also, I forgot to apologize for suggesting that the writer of the Cisco
document might be slightly clueless. :-0
Usually TAC documents are great, which is what this one is.
Priscilla
Priscilla Oppenheimer wrote:
>
> You are right, M
You are right, Marty. I had to enable "no ip route-cache" on the serial
interface of the router doing the relevant debugging, which is the router
that is on the other side of the link where the pings are occurring.
Here's my lab:
Boston Router s0 s0 Charlotte Router
Marty,
And I forgot to ask below, any thoughts as to whether or not the echo
*replies* are somehow bounced off of the distant-end router too? That is
what I found the most difficult to accept and was stretching for a theory
that might possibly explain it.
Thanks again,
Scott
s vermill wrote:
Marty Adkins wrote:
> >
> I'm not totally sure what you mean by "from a local ethernet
> interface".
> If you mean that the router forwarded a packet that arrived on
> its
> Ethernet interface, and the destination was its serial IP, then
> the
> packet will definitely *not* leave the router.
As
Priscilla Oppenheimer wrote:
>
> s vermill wrote:
> >
> > Anyone smart on interworkings of Cisco routers care to clarify
> > something for me? I was in a discussion with someone in
> > another forum. It was being discussed how pings from a local
> > ethernet interface to a local serial interfac
Priscilla Oppenheimer wrote:
>
> Don't believe everything you read. ;-) This statement from the
> Cisco document is not believable:
>
> "Pings to your own interface address are successful on
> point-to-point subinterfaces or high-level data link control
> (HDLC) links because the router on the o
s vermill wrote:
>
>
>
> > This doesn't sound believable to me. It sounds like the
> > discussion mangled some slightly related topics and applied
> > them to this situation. ;-) Or that someone misinterpreted the
> > output from "debug ip icmp." Or perhaps someone jumped to this
> > conclusion
> This doesn't sound believable to me. It sounds like the
> discussion mangled some slightly related topics and applied
> them to this situation. ;-) Or that someone misinterpreted the
> output from "debug ip icmp." Or perhaps someone jumped to this
> conclusion due to the fact that you have to ma
s vermill wrote:
>
> Anyone smart on interworkings of Cisco routers care to clarify
> something for me? I was in a discussion with someone in
> another forum. It was being discussed how pings from a local
> ethernet interface to a local serial interface on the same
> router actually cross the W
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