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Nexus 3048 interface speed-duplex setting not working

ajtm
Beginner
Beginner

I have two Nexus 3048 switches with different NX-OS versions - 7.0(3)I7(6) and 9.2(1 ) - but the same symptoms: when I set the speed/duplex to 100Full it operates at 100Half even it the remote end at 100Full to. It seems auto-negotiation is always on.


# show system internal ethpm info interf ethernet 1/1

[...]

Admin Config Information:
state(up), mode(access), speed(100 Mbps), duplex(Full), medium_db(0), fec(auto), port-type(not-fabric)
layer(L2), dce-mode(edge), description(), transmit-reset-skip(0)
auto neg(on), auto mdix(on), beacon(off), num_of_si(0)
config auto neg(on) openflow(0) switchport_isolated(0)

[...]

Operational (Runtime) Information:
state(up-1), mode(access), speed(100 Mbps), duplex(Half), fec(auto)
state reason(None), error(no error-2)

[...]

1 Accepted Solution

Accepted Solutions

ajtm
Beginner
Beginner

It seems I have to insert the command "no negotiate auto" in interface config. This command is not available in 7.0(3)I7(6) and 9.2(1 ) but it works in 9.2(4).

 

Problem solved !

View solution in original post

3 Replies 3

marce1000
VIP Mentor VIP Mentor
VIP Mentor

 

                  >...even it the remote end at 100Full to it.

 - Can you elaborate on this phrase, I find it confusing.

 M.

balaji.bandi
VIP Guru VIP Guru
VIP Guru

Adding to another post, what is the distance between the end device and nexus 3K? what kind of cable is this?

 

Cat5 ? or Cat5E ?

 

BB

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ajtm
Beginner
Beginner

It seems I have to insert the command "no negotiate auto" in interface config. This command is not available in 7.0(3)I7(6) and 9.2(1 ) but it works in 9.2(4).

 

Problem solved !

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