[c-nsp] The myths of autonegotiate vs forced

[Jim Getker (getker)]

The 6K gigabit copper ports support speed auto 10 100.

Jim


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Peter Rathlev
Sent: Friday, August 20, 2010 3:45 AM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] The myths of autonegotiate vs forced

On Fri, 2010-08-20 at 09:34 +0200, Mikael Abrahamsson wrote:
> In case of having to force, do use "speed auto / duplex full" if your 
> equipment supports it.

And on a side note, if one needs to provide less-than-linerate speeds
(e.g. a 100 Mbps customer on a gigabit interface) it's much better to
use "speed auto 100" than "speed 100". Not all devices/modules support
it (by far), but it will give you the benefits of autonegotiate while
still "locking" the interface at a lower speed.

The 3560G supports it, most 6500 modules seem not to AFAICT. Let's see
if 100 Mbps disappears before this will be generally implemented.

-- 
Peter


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