I did a lot of research, but I have a problem finding one thing: Is auto-negotiation mandatory on 1000BaseX (i.e 1000BaseSX) interfaces? (in other words, should every 1000BaseX interface support auto-negotiation function))
I did a search through a lot of annexes of 802.3 standard (from 2004, 2005, 2006) but I can't find any sentence that actually says: Auto-negotiation function MUST be supported by every 1000BaseX
If you guys have any link to any documents that shows me autonegotiation function requirements, I would be more than thankful.
Thanks for your answer, but I have one more thing. When you look to the commands (config-if)#speed nonegotiate or (config-if)#no negotiate auto, you will see that Cisco says that these commands are not used for setting speed negotiation, but duplex/flow control and remote failures (whatever that be).
I tried to read IEEE 802.3 annex 2005 part 3 which has something like 50 pages about auto-negotiation function on 1000Base-X interfaces, but the thing is, I can't find (maybe I need new glasses) any keyword MUST, or REQUIRED to use.
So, basically, the thing is I can't find is autonegotiation function MANDATORY or OPTIONAL (and should GBIC/SPF manufacturers and/or OS manufacturers follow this standard and create auto-negotiate capable interfaces or not).
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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