NEXUS 3172T: command failed: port not compatible [Capabilities speed]

[Allan Zanella]

Hello guys, 

I'm receiving this error when I try to add 2 40G interfaces in a Port-channel

SWACC10-DA2(config-if-range)# no speed
SWACC10-DA2(config-if-range)# channel-group 1 mode active
command failed: port not compatible [Capabilities speed]

Switch ver:

Nexus 3172T Chassi

kickstart: version 6.0(2)U5(2)
system: version 6.0(2)U5(2)

Show interface status

Port Name Status Vlan Duplex Speed Type
--------------------------------------------------------------------------------
----
Eth1/53 -- sfpAbsent 1 full 40G --

Eth1/54 -- sfpAbsent 1 full 40G --


SWACC10-DA2(config-if-range)# sh int status | i Po1
Po1 -- noOperMem 1 Full auto --

I tried set 'no speed' command in both ports and the port-channel but no luck.

Thanks.

[balaji.bandi]

before I address other issues, bot the ports show "sfpAbsent"   - do you have SFP?

show run inter eth 1/53

show run inter eth 1/54

show run inter port 1

show inter eth 1/53 trans

show inter eth 1/54 trans

[Allan Zanella]

Hello,

Not yet, but I could put 4 10Gigabit Ethernet ports in a port-channel without the SFP.

[balaji.bandi]

Hope this is not vPC environment - most case people use port-channel 1 for vPC

default the interface config, create port-channel 1 first, add each interface in to port-channel 1 and let us know how it goes.

[Allan Zanella]

Tks Balaji, it worked I add the ports separately. Now I can't add the speed to the Port-channel.

SWACC10-DA2(config-if)# speed 40000
ERROR: port-channel1: requested config change not allowed

[balaji.bandi]

why do you need to speed command? if you do not have any SFP installed as of now?

port-channel speed based on the physical interface joined to Etherchannel?

For example: if you add 2 x 10GB , that means 20GB, how that can be 40GB ?

[GIANRICO FICHERA]

This can happen if you try to put interfaces with different speeds in a port-channel.
For example here is a port-channel interface with a speed of 1000 Mb/s:

ITESYS-Nexus1# sh int port-channel 2 | include 1000
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec
full-duplex, 1000 Mb/s

 A port-channel interface is not physical so its speed derives from that of the member interfaces. The reason is that a 1gb interface is a port-channel member.

interface Ethernet3/2
description --- port 1 ---
switchport
switchport mode trunk
switchport trunk allowed vlan 101
channel-group 2
no shutdown

Let's see what happens if we add a second port but at 10giga to the port channel.

ITESYS-Nexus1(config)# int ethernet 4/1
ITESYS-Nexus1(config-if)# channel-group 2
command failed: port not compatible [Capabilities speed]