LACP failing between 2 C9500-16X switches

[Damon2021]

Hi,

I have 2 C9500-16X with 2 cables connecting each other. I would like to configure the interlinks as port channel LACP. I am getting below error:

%ETC-5-L3DONTBNDL2: Te1/0/14 suspended: LACP currently not enabled on the remote port.

Here are the configs:

Cat9500-SW1:

!

interface Port-channel1
switchport trunk allowed vlan 10,20,30
switchport mode trunk
switchport nonegotiate
dampening
bandwidth 10000000
load-interval 30
carrier-delay msec 0
end

!

interface TenGigabitEthernet1/0/14
switchport trunk allowed vlan 10,20,30
switchport mode trunk
switchport nonegotiate
dampening
bandwidth 10000000
load-interval 30
carrier-delay msec 0
channel-protocol lacp
channel-group 1 mode active
end

interface TenGigabitEthernet1/0/15
switchport trunk allowed vlan 10,20,30
switchport mode trunk
switchport nonegotiate
dampening
bandwidth 10000000
load-interval 30
carrier-delay msec 0
channel-protocol lacp
channel-group 1 mode active
end




Cat9500-SW2:

!

interface Port-channel1
switchport trunk allowed vlan 10,20,30
switchport mode trunk
switchport nonegotiate
dampening
bandwidth 10000000
load-interval 30
carrier-delay msec 0
end

!
interface TenGigabitEthernet1/0/14
switchport trunk allowed vlan 10,20,30
switchport mode trunk
switchport nonegotiate
dampening
bandwidth 10000000
load-interval 30
carrier-delay msec 0
channel-protocol lacp
channel-group 1 mode active
end

!
interface TenGigabitEthernet1/0/15
switchport trunk allowed vlan 10,20,30
switchport mode trunk
switchport nonegotiate
dampening
bandwidth 10000000
load-interval 30
carrier-delay msec 0
channel-protocol lacp
channel-group 1 mode active
end

Thanks

[MHM Cisco World]

in which SW you receive this message, in that SW only

shut/no shut

the Port channel and it will work normally.

[Damon2021]

I see it in logs on both switches. When I do show int status, it shows this on both switches:

Te1/0/14 suspended trunk full 10G SFP-10GBase-LR
Te1/0/15 notconnect trunk full 10G SFP-10GBase-LR

Po1 notconnect trunk auto auto N/A

I tried

shut and no shut

on Po1 on both switches but no luck.

[balaji.bandi]

%ETC-5-L3DONTBNDL2: Te1/0/14 suspended: LACP currently not enabled on the remote port.

what happends when you

shut and no shut

(is that works ?)

Do you have VLAN created both the end ?

Can you post both the sides:

show etherchannel 1 summary

show interface TenGigabitEthernet1/0/14

show interface TenGigabitEthernet1/0/15

[marce1000]

                       - FYI : https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwa53721

 M.

[Damon2021]

Workaround: configure lACP on the peer or remove LACP config from the affected interface.

Thats super helpful  lol

[David Ruess]

Hello,

Try deleting the port channel and the interface configs. (copy to clipboard)

Configure like this:

configure terminal

interface range TenGigabitEthernet1/0/14-5

channel-group 1 mode active




exit




interface Port-channel1

switchport trunk allowed vlan 10,20,30
switchport mode trunk
switchport nonegotiate
dampening
bandwidth 10000000
load-interval 30
carrier-delay msec 0

***^^ try that exact config on both switches. Also make sure those are the exact interfaces that are plugged in and physically working first and then add the "channel-protocol lacp" if it still doesn't come up.

Hope that helps

-David

[Damon2021]

I will try the above.

I even wiped all the configs and only put this on both switches:

interface Port-channel1


interface TenGigabitEthernet1/0/14
channel-group 1 mode active

interface TenGigabitEthernet1/0/15
channel-group 1 mode active

It still went in the suspended state.

[MHM Cisco World]

OK, workaround 
config the Port channel as your original post, 
then try add port one by one (ONE by ONE), this will give us some hint if there is L1 issue.
try add Te1/0/14 
then add Te1/0/15

[Damon2021]

I tried that as well before and it was still suspending.

L1 should be good as if I enable ports without lacp, it shows connected and I can see cdp nei.

For testing, I changed the mode to pagp and it come up but as standalone.

interface Port-channel1


interface TenGigabitEthernet1/0/14
channel-group 1 mode desirable

interface TenGigabitEthernet1/0/15
channel-group 1 mode desirable

Ports are shows connected. Here is etherc summ output:

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SD) PAgP Te1/0/14(I) Te1/0/15(I)

[David Ruess]

Never create the port channel first. Delete the port channel and go into an interface and delete any configs in it (including the channel-group you just made) that is up/up and then create the channel group again under that and let the port channel "create itself". Then under the port channel that's created put your interface configs.

-David

[Damon2021]

I ran below 2 commands and port went into suspended:

interface range TenGigabitEthernet1/0/14-15

channel-group 1 mode active

It created a port-channel 1 automatically and then went into suspended.

[David Ruess]

Can you show the output of these commands?

debug etherchannel all

debug lacp all

Also try 2 things:

1. setting one side as passive just to try.

2. Once the port channel is created just configure it as trunk hard coded. Both sides. Form your show int output it looks like it reverted to auto auto. That might be the trunk status and just being weird.

-David

[MHM Cisco World]

I follow other Post we discuss the command 

no port-channel standalone-disable

and it effect on port-channel management traffic (I think LACP is also list under management traffic), 
this command prevent the port from deny all traffic included management and hence make both peer don't see LACP message and remain in suspend. 

SO TRY PLEASE ADD THIS COMMAND AND SEE RESULT 

[Damon2021]

With your command, the ports are now showing connecting but LACP members are in standalone (I):

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SD) LACP Te1/0/14(I) Te1/0/15(I)