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To: <cipe-l,AT,inka,DOT,de>
Subject: Re: Ping problem
From: "David A. Osborn" <david.osborn,AT,mchsi,DOT,com>
Date: Sun, 31 Aug 2003 12:14:07 -0500
References: <000a01c36fe1$4a025f20$d620a8c0@pcw_hans.hnsasd.priv>

Ah you're right.  The culprit was a faulty output rule on 192.168.1.248 box.
I was allowing output for 192.168.0.0/8 instead of 192.168.0.0/16.  The ping
is working fine now between the two machines linked by CIPE. Now I need to
figure out why I can't ping the internal network.

----- Original Message ----- 
From: "Hans Steegers" <hsx,AT,dds,DOT,nl>
To: "David A. Osborn" <david.osborn,AT,mchsi,DOT,com>
Cc: <cipe-l,AT,inka,DOT,de>
Sent: Sunday, August 31, 2003 11:59 AM
Subject: Re: Ping problem

> Looks like a routing or firewall problem:
>
> 192.168.1.248 -> 192.168.10.1: ping reply returns to the local cipe
> interface but is not seen by the ethernet interface..(?)
> 192.168.10.1 -> 192.168.1.248: ping request reaches the cipe interface on
> 248 but reply fails.
> So, there must be a problem between the cipe interface and the ethernet
> interface on 192.168.1.248, related to routing or the firewall blocks ICMP
> reply packets..
>
>
> Hans Steegers
>
> -----Original Message-----
> From: David A. Osborn <david.osborn,AT,mchsi,DOT,com>
> To: cipe-l,AT,inka,DOT,de <cipe-l,AT,inka,DOT,de>
> Date: Sunday, August 31, 2003 6:35 PM
> Subject: Ping problem
>
>
> I am still having issues getting CIPE working.  It looks like it is close,
> but my ping is acting a little weird.  The two machines have Ip address
> 192.168.10.1 and 192.168.1.248, I do a "tcpdump -i cipcb0"  on both
machines
> and do a ping and I get the following:
>
> ping from 192.168.1.248 to 192.168.10.1:
> both tcpdumps display:
> 192.168.1.248 > 192.168.10.1: icmp: echo request (DF)
> 192.168.10.1 > 192.168.1.248 icmp: echo reply
>
> This would tell me that the ping should be completing fine, but the actual
> Ping command fails on every attempt.
>
> ping from 192.168.10.1 to 192.168.1.248
> both tcpdumps display
> 192.168.10.1 > 192.168.1.248: icmp: echo request (DF)
>
> neither display the echo reply and of course the Ping fails.
>
> Any ideas?
>
>
>
>
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