RE: traceroute

From: Mike Kraus \(mikraus\) (mikraus@cisco.com)
Date: Sun Jul 01 2007 - 16:44:49 ART


I just tried this, source is still physical... Tried just doing ip nat
enable (with NVI) to see if router would magically figure it out too,
but to no avail.

Have you gotten this to work?

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Antonio Soares
Sent: Sunday, July 01, 2007 2:30 PM
To: 'Bhaskar Sivanesan'; 'ccie forum'
Subject: RE: traceroute

None since the traffic is sourced from the router itself.

  _____

From: Bhaskar Sivanesan [mailto:bas_bharath@yahoo.com]
Sent: domingo, 1 de Julho de 2007 20:25
To: Antonio Soares; ccie forum
Subject: Re: traceroute

Thanks Antonio, which will be the "ip nat inside" interface in this
case.
 
cheers

 
----- Original Message ----
From: Antonio Soares <amsoares@netcabo.pt>
To: Bhaskar Sivanesan <bas_bharath@yahoo.com>; ccie forum
<ccielab@groupstudy.com>
Sent: Sunday, July 1, 2007 8:19:13 PM
Subject: RE: traceroute

The answer is NAT:

Example config:

!
access-list 102 permit icmp any any port-unreachable
access-list 102 permit icmp any any ttl-exceeded
!
ip nat inside source list 102 interface Loopback0 overload
!
!
interface Ethernet1/0
ip nat outside
!

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Bhaskar Sivanesan
Sent: domingo, 1 de Julho de 2007 19:58
To: ccie forum
Subject: traceroute

Hi group

How do we change the source IP address in the ICMP TTL exceeded reply
messages.

Like, when I am doing a traceroute, I want the reply to be sourced from
the
respective router's loopback ip address rather than the interface
address?

is there any way to do it?

thanks

       



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