2.4 and PPPoE problem

2.4 and PPPoE problem

[Martin Hicks]

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Hello,

I'm using PPPoE with an i586 machine running 2.4.2.

The machine connects fine and allows network traffic to pass
through the link.

However, certain websites seem to choke.
(notable ones are www.chapters.ca and www.hp.com)

Using Lynx or Netscape I get the same results, a few bytes of
traffic are received and then nothing (eventually the connection
times out).  

The same does not happen in windows.  (ugh)

I have not encountered any machine that I have telnet/ftp/ssh
access to that breaks in this way so I can only confirm that http traffic 
is not working.

This gateway machine does masquerading, and internal machines and the external
machine react the same way.

TIA
mh


Here is some useful info:

mort@galileo:~$ uname -a
Linux galileo 2.4.2 #4 Thu Feb 22 14:13:23 EST 2001 i586 unknown

mort@galileo:~$ /sbin/ifconfig ppp0
ppp0      Link encap:Point-to-Point Protocol  
          inet addr:209.217.122.37  P-t-P:209.217.122.1  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1480  Metric:1
          RX packets:1272056 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1476697 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:430171737 (410.2 Mb)  TX bytes:1260803415 (1202.3 Mb)


mort@galileo:~$ /sbin/route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
magma           *               255.255.255.255 UH    0      0        0 ppp0
192.168.69.0    *               255.255.255.0   U     0      0        0 eth0
default         magma           0.0.0.0         UG    0      0        0 ppp0




-- 
Martin Hicks   || mort@bork.org    
Use PGP/GnuPG  || DSS PGP Key: 0x4C7F2BEE  
Beer: So much more than just a breakfast drink.

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Re: 2.4 and PPPoE problem

[Jeremy Jackson]

Martin Hicks wrote:

> Hello,
>
> I'm using PPPoE with an i586 machine running 2.4.2.

are you using the kernel pppoe or the user-space one (rp-pppoe, etc)?
did it work on other kernels?

>
>
> The machine connects fine and allows network traffic to pass
> through the link.
>
> However, certain websites seem to choke.
> (notable ones are www.chapters.ca and www.hp.com)
>
> Using Lynx or Netscape I get the same results, a few bytes of
> traffic are received and then nothing (eventually the connection
> times out).
>
> The same does not happen in windows.  (ugh)
>
> I have not encountered any machine that I have telnet/ftp/ssh
> access to that breaks in this way so I can only confirm that http traffic
> is not working.
>
> This gateway machine does masquerading, and internal machines and the external
> machine react the same way.

are you positive the external (2.4.2 machine, right?) acts this way?

you can send me a tcpdump trace of a session or two that chokes.

>
>
> TIA
> mh
>
> Here is some useful info:
>
> mort@galileo:~$ uname -a
> Linux galileo 2.4.2 #4 Thu Feb 22 14:13:23 EST 2001 i586 unknown
>
> mort@galileo:~$ /sbin/ifconfig ppp0
> ppp0      Link encap:Point-to-Point Protocol
>           inet addr:209.217.122.37  P-t-P:209.217.122.1  Mask:255.255.255.255
>           UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1480  Metric:1
>           RX packets:1272056 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:1476697 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:3
>           RX bytes:430171737 (410.2 Mb)  TX bytes:1260803415 (1202.3 Mb)
>
> mort@galileo:~$ /sbin/route
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
> magma           *               255.255.255.255 UH    0      0        0 ppp0
> 192.168.69.0    *               255.255.255.0   U     0      0        0 eth0
> default         magma           0.0.0.0         UG    0      0        0 ppp0
>
> --
> Martin Hicks   || mort@bork.org
> Use PGP/GnuPG  || DSS PGP Key: 0x4C7F2BEE
> Beer: So much more than just a breakfast drink.
>
>   ------------------------------------------------------------------------
>    Part 1.2Type: application/pgp-signature

Re: 2.4 and PPPoE problem

[Martin Hicks]

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Yes...my MTU on ppp0 was to high.  Thanks.

mh

On Mon, Mar 12, 2001 at 10:06:15PM +0200, mulix wrote:
> hi, 
> 
> you might want to check your mtu and mru values on both the external
> interface (i assume you are using an ADSL modem, from your usage of
> PPPoE, so that will be eth0) and the internal interface (ppp0). the mtu
> and mru values on the internal interface should be a bit less than those
> on the external interface, to work around modem bugs. 
> 
> here in israel, an MTU value of 1500 for the external interface and 1452
> for the internal (1452) seems to work fine and solve a problem which
> sounds exactly like yours. 
> 
> On Mon, 12 Mar 2001, Martin Hicks wrote:
> 
> > The machine connects fine and allows network traffic to pass
> > through the link.
> > 
> > However, certain websites seem to choke.
> > (notable ones are www.chapters.ca and www.hp.com)
> > 
> > Using Lynx or Netscape I get the same results, a few bytes of
> > traffic are received and then nothing (eventually the connection
> > times out).  
> 
> -- 
> mulix
> http://www.advogato.com/person/mulix
> 
> linux/reboot.h: #define LINUX_REBOOT_MAGIC1 0xfee1dead
> 

-- 
Martin Hicks   || mort@bork.org    
Use PGP/GnuPG  || DSS PGP Key: 0x4C7F2BEE  
Beer: So much more than just a breakfast drink.

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