I just ran into a problem where I troubles getting link to come up. I have a
10/100 card configured for auto-negotiate connected to a switch. When the
switch port was configured as fixed 100/full duplex link would not come up.
When the switch port configured for auto then I did get link to come up at
100. Since policy is that switch ports are configured for specific speeds
and duplex values we could not leave the switch port set to auto.
I fixed the problem by power cycling the system the card was in.
My question is what could cause the card to fail to detect the speed of the
switch when it was set to a fixed speed but to still auto-negotiate
correctly and why would a power cycling fix the problem?
Serendipity is a function of bandwidth