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Subject: Re: win32-cipe large packet problem.
From: Dong Liu <dliu,AT,research,DOT,bell-labs,DOT,com>
Date: Tue, 22 May 2001 04:36:26 +0200
In-reply-to: <3B084497.8060403@research.bell-labs.com>

It looks like it has something to do with the linux firewall code. After
I switched from ipchains to iptables on the linux box. "cat /etc/termcap"
does not freeze the telnet connection any more. But mozilla still freezes
over some web site. This was what I got when I did a tcpdump on the linux
box.

17:59:42.104811 207.200.89.195.http > 192.168.2.203.1869: S 
3404413140:3404413140(0) ack 1484433835 
win 34704 <nop,nop,sackOK,mss 1446> (DF)
17:59:42.105837 192.168.2.203.1869 > 207.200.89.195.http: . 1:1(0) ack 1 win 
17352 (DF)
17:59:42.106209 192.168.2.203.1869 > 207.200.89.195.http: P 1:319(318) ack 1 
win 17352 (DF)
17:59:42.191308 207.200.89.195.http > 192.168.2.203.1869: . 1:1(0) ack 319 
win 34704 (DF)
17:59:42.192774 207.200.89.195.http > 192.168.2.203.1869: P 1:149(148) ack 
319 win 34704 (DF)
17:59:42.308499 192.168.2.203.1869 > 207.200.89.195.http: . 319:319(0) ack 
149 win 17204 (DF)
17:59:44.732136 192.168.2.203 > 207.25.71.29: icmp: ip reassembly time 
exceeded
17:59:44.732146 192.168.2.203 > 207.25.71.29: icmp: ip reassembly time 
exceeded
17:59:44.732154 192.168.2.203 > 207.25.71.29: icmp: ip reassembly time 
exceeded
17:59:44.732162 192.168.2.203 > 207.25.71.29: icmp: ip reassembly time 
exceeded

Dong

Dong Liu wrote:

> Hi
> 
> I'm running cipe-1.5.2 on linux kernel 2.4.4. If the remote side was also
> linux cipe 1.5.2, it worked beautifully. But if the remote side was 
> win32 cipe
> 2.0-pre9, I encountered a problem that it seemed the tcp connection got
> frozen over large packet. I can telnet to a remote site over the cipe
> interface. Commands which produced small output worked just fine. But 
> command
> which produced large output (such as "cat /etc/termcap") just froze the 
> connection.
> 
> Thanks.
> 
> Dong
> 





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