Hello,
I'm certainly NOT a network expert but I'm working right now on
network with mixed 100 and 10 mbps stations, connected with a switch
and I don't see any problem in such setup. IMHO any decent switch
should be able to handle speed differences. At home I had a similar
problem which turned out to be wrong MTU. So I suggest you check the
ADSL Howto and verify that you have lowered MTU on all workstations or
implemented the iptables fix if you have 2.4 kernel.
Haim.
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of fredy
> Sent: Thursday, June 07, 2001 1:02 PM
> To: Aviram Jenik; Shaul Karl
> Cc: linux ILUG
> Subject: RE: ADSL problems with 10/100 NICs
>
>
> Unlike a 10/100 hub a switch will not automatically handle
> differences in
> communication speeds.
> I never used 3com switches but they all have one thing in
> common - the
> direct cable connection, some even a telnet connection.
> All you have to do is enter the interface and configure the
> switch, I belive
> that bye seperating the switch into "semi-subnets" you will
> solve the
> problem.
> for example, lets say its a 16 port switch, just make the
> first 8 10MBit and
> the last 8 100MBit, the switch then will use logic to
> transfer packets
> between the two "subnets".
> another thing you should do while inside the interface is
> check the port
> status, i belive you should see many collisions and packet
> timeouts which
> were caused by the missconfiguration of the switch and they
> are the reason
> your sessions broke up.
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On
Behalf Of Aviram Jenik
Sent: Thursday, June 07, 2001 8:48 AM
To: Shaul Karl
Cc: linux ILUG
Subject: Re: ADSL problems with 10/100 NICs
> > My guess is that those machines are sending packets in 100mbps
whereas
the
> > Linux machine uses a 10mbps card and loses packets, which results
in a
> > broken connection.
>
> I was under the impression that a good dual-speed switch should
handle
those speed differences by itself, transparently. What is the model of
your
switch?
>
Yes, I thought so too. Note that network communication is working, but
occasionally web pages are not displayed and e-mail download gets
broken.
The switch is a 3COM OfficeConnect Dual speed switch.
- Aviram
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