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Posted by on June 19, 2008, 8:21 am
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Hello,
I need to know how much time the Auto-Negotiation process can take in
1000Base-T networks. I have already looked into the IEEE 802.3
standard, but there is no maximum period specified directly. Maybe I
have missed somehting... I also have to admit that I didn't READ the
whole thing ;-)
In the 802.3u document, there is this "Link Test Fail state exit
condition" of "autoneg_wait_timer expired and either RD = active or
consecutive link test pulses = 3 min., 10 max". Since the link test
pulses have a much shorter interval, this would mean that 1000 ms is
the maximum.
But there are also other timers which sound like they may be somehow
related to the maximum auto-negotiation time:
- autoneg_wait_timer 500 ms to 1000 ms
- break_link_timer 1200 ms to 1500 ms
- link_max_timer_done
Any help would be appreciated!
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