PC Routers

CLIFFORD ILKAY clifford_ilkay-biY6FKoJMRdBDgjK7y7TUQ at public.gmane.org
Fri Dec 23 17:08:27 UTC 2011


On 12/22/2011 07:07 PM, Anthony de Boer wrote:
> I'm aware of at least one colo facility in the GTA that uses Cisco gear
> and buys that old chestnut.  The story as it was told to me was that
> first generation Sun and Cisco Fast Ethernet (100MB) gear didn't quite
> autonegotiate correctly and that was the workaround needed back then,
> with it subsequently hanging around like a bad superstition.
>
> With a managed switch, or mii-tool on a Linux box, you too can force
> your port to a manually-agreed-on speed and duplex and join the cargo
> cult.

I've used mii-tool to do this in another colo facility that had the same 
issue but in that case, the server was connected directly to the 
colo-supplied switch port. I was renting the server from the colo 
facility and they blamed Debian claiming that none of the Windows 
servers they were hosting or any of the other Linux servers had the same 
problem. It was only after I started dealing with the colo facility in 
Toronto that I understood the issue. Before that, it was a complete 
mystery to me as to why I had to force 100Mb/s bi-directional with 
mii-tool. I thought it was something specific to the hardware that they 
had provided and had just shrugged it off and moved on.

mii-tool made no difference in the colo facility in Toronto because 
there was an unmanaged switch in between the servers and the 
colo-supplied switch port.

> You could open a ticket with your provider asking them to properly
> enable autonegotiation on your port, reminding them that it's the 21st
> century now.

I haven't had any luck on that one with the colo facilities I've dealt with.
-- 
Regards,

Clifford Ilkay
Dinamis
1419-3266 Yonge St.
Toronto, ON
Canada  M4N 3P6

<http://dinamis.com>
+1 416-410-3326
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