Hi All,
I was having some problems connecting to a broadcom NIC with the following settings,
Scenario 1:
NIC: 100/full
Switchport: 100/full
The interface does not come up. However then i configured "set interface X/X/X ether-options no-auto-negotiation" the interface is up and running.
This information is discussed in the "Junos Enterprise Switching - O'Reilly" book, pg 148-149
But just wondering:
1) Why is auto-negotiation need to be disabled when we fixed the speed/duplex? Is there any situation when we need to set auto-negotiate and speed/duplex is fixed? I feel that the no-auto-negotiation is redundant in Scenario 1
2) In Cisco switches, once auto-negotiate is disabled, auto-mdix on the switchport does not work. In Juniper switches , does it also turn off the auto-mdix function on the switchport once no-auto-negotiation is configure? If yes, that at least we can answer my first question.
Anyone experience this situation before, please share. Thanks.