When I did a search, I didn't find a good answer right away but here is what
I did find.
----------------------------------------------------------------------------
----
Question:
What is required to make pinging a local or remote interface work?
Answer: You must have a running Cisco router, configured for IP on that
interface, at the other end of the serial line. Since HEARSELF is defined on
the serial interface, the ping to our own address will go out the wire. The
router on the other end will send it back to us, and we will recieve it.
We'll then send a ping response to ourselves out the wire, and the router on
the other end will send it back to us. Note that when we ping our own serial
address, the ping times are much larger than when we ping the other router's
address. This is because each packet goes on a path that is twice as long.
I found it at
http://www.cisco.com/openf/TechTips/Internetworking/Protocols/291.html
-----Original Message-----
From: Robert Padjen [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 28, 2001 4:29 PM
To: Vincent; [EMAIL PROTECTED]
Subject: Re: Routers can't ping own interface
Cisco routers employ 'hearself' on the serial
interfaces. A look at CCO should explain the details
and help you understand the specifics for this
problem.
--- Vincent <[EMAIL PROTECTED]> wrote:
> Hi;
>
> Can you ping 127.0.0.1
>
> Thanks
> Vincent
> <[EMAIL PROTECTED]> ¼¶¼g©ó¶l¥ó
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> >
> >
> > I have a question - please if I have overlooked
> something just point me in
> the
> > right direction, I'm not looking to be spoon fed.
> :) I looked through the
> Cisco
> > web site and documentation that I had but I was
> wondering if anyone else
> had
> > seen this.
> >
> > I have two routers in a test lab, a 2509 and a
> 2514. Without going into
> great
> > details regarding the way they are configured (I
> can certainly provide
> more
> > detail if necessary - I just figured this might be
> a simple dumb thing I
> > overlooked type question), neither router can ping
> their own serial port.
> > However, each can ping the others serial port.
> Both routers can ping their
> own
> > Ethernet port, but neither can ping the others. IP
> is the only protocol
> > configured, the 2509 is configured as the DCE,
> the 2514 as the DTE. Both
> are
> > running IOS 11.3.
> >
> > There are other issues as well, but the whole
> "can't ping their own
> interface"
> > thing has me confused....any ideas?
> >
> > I'm going to scrap both configs today and start
> from scratch, but this was
> > driving me nuts!
> >
> > TIA
> >
> >
> > _________________________________
> > FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to
> [EMAIL PROTECTED]
> >
>
>
> _________________________________
> FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to
[EMAIL PROTECTED]
=====
Robert Padjen
__________________________________________________
Do You Yahoo!?
Get email at your own domain with Yahoo! Mail.
http://personal.mail.yahoo.com/?.refer=text
_________________________________
FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
