Re: Hari and train-up sequences
Roy-
Thanks for the comment. I hope that by now you've received the next
message that I sent :-). In that message, I reinforced that I am not a
strong advocate of AN, rather that if AN must exist, the link fault
signalling component should be exploited.
JR
At 11:07 PM 11/18/99 -0600, Roy Bynum wrote:
>JR,
>
>As a network architect and implementor, I have found that AN used for link
>speed
>and duplex is the first thing that gets turned off when there is a problem
with
>initiating a link. Often turning AN off and manually setting the link speed
>and
>duplex fixes the problem. This happens even between different units from the
>same vendor. I don't know why this works out the way that it does, it simply
>does. AN is a great idea. Sometimes it works very well, sometimes it does
>not. Beyond simple link initialization for the fixed full duplex and fixed
>link
>speed of a 10gb LAN or WAN PHY I do not think that AN should be considered for
>P802.3ae.
>
>Thank you,
>Roy Bynum
>
>JR Rivers wrote:
>
>> If it didn't work, then it may not have been specified correctly. I
>> presume that most people were able to get 8b10b coding to work. I would
>> imagine that they also got other components of the autonegotiation process
>> (like link speed, duplex, etc) to work. If I'm correct, then it seems that
>> the mechanism isn't flawed, but rather its use :-)
>>
>> JR
>>
>
>