Nexus 5000 - Lacp

[opnineopnine]

Hello

I have create a new vpc, but when I a "show port-channnel summary" why I see Po50 with Protocol NONE and 10 and 30 with Protocol LACP?

--------------------------------------------------------------------------------
Group Port- Type Protocol Member Ports
Channel
--------------------------------------------------------------------------------
10 Po10(SU) Eth LACP Eth116/1/2(P) Eth116/1/3(P)
30 Po30(SU) Eth LACP Eth123/1/1(P) Eth123/1/2(P)
50 Po50(SD) Eth NONE Eth2/1(D) Eth2/2(D)

Thanks. 

[Reza Sharifi]

Hi,

NONE usually indicates that you did not enable any protocols (in this case LACP) under the interface.

Can you post the config?

sh run int e2/1 and 2/2

sh run int po50

Also, the physical ports are currently down.

HTH

[opnineopnine]

Hello 

interface port-channel50
switchport mode trunk
switchport trunk allowed vlan 20
vpc 50

interface Ethernet2/1
switchport mode trunk
switchport trunk allowed vlan 20
channel-group 50

interface Ethernet2/2
switchport mode trunk
switchport trunk allowed vlan 20
channel-group 50

Thanks. 

[Mark Malone]

should be......channel-group 50 mode active

[opnineopnine]

Hello Mark & Reza,

Thanks both for your answer, can you tell me when I have to use the different modes of lacp and with the actual configuration , can i have any spanning-tree issue?

thanks. 

[Reza Sharifi]

Hi,

With Nexus, the mode is usually active/active. 

As for STP, this is a Portchannel and both links logically look as one aggregated interface. So, there should not be any STP issues, as neither one of the interfaces should be blocking.

HTH

[opnineopnine]

Hello,

But in the case I have for the Port50 I have that lacp is not active, can I still have spanning-tree issues? 

Thanks. 

[Reza Sharifi · Accepted solution]

Hi,

No, even though you don't have LACP, the Portchannel operates as mode on. So, no STP issue.

HTH

[pafcio84]

Yes this is right. But to do this you have to remove portchannel 50 and make for instance portchannel 40 and reasign to eth2/2 and eth 2/1

[Reza Sharifi]

channel-group 50

This is mode on. For lacp you need to add

channel-group 50 mode active

HTH

[pafcio84]

Hi,

You have to crate new port-channel and then add settings again for phisical interfaces: channel group X mode active. When you see only "channel group 10" than you have status NONE. You just have to Recrate port channel.