LACP suspended port problem

[klarix]

Hello,

We have setup a LACP port between a Synology NAS & a Stack of 2 Cisco 2960x switches.

When looking at ether channel status, we see 3 ports are in correct state (P), but the fourth one is in suspended mode (s)... and we can't understand why.

>> Status : 

SW1#show etherchannel 3 summary

...
Number of channel-groups in use: 1
Number of aggregators: 1

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
3 Po3(SU) LACP Gi1/0/2(P) Gi1/0/4(P) Gi2/0/2(s)
Gi2/0/4(P)

>> Syslog message : 

Aug 23 15:26:49.653: %EC-5-L3DONTBNDL2: Gi2/0/2 suspended: LACP currently not enabled on the remote port. (SW1-2)

>> Config :

interface Port-channel3
description ### NAS_DC2 ###
switchport access vlan 13
switchport mode access
switchport nonegotiate

!

interface GigabitEthernet1/0/2
description ### NAS_DC2 ###
switchport access vlan 13
switchport mode access
switchport nonegotiate

channel-protocol lacp
channel-group 3 mode active

!
interface GigabitEthernet1/0/4
description ### NAS_DC2 ###
switchport access vlan 13
switchport mode access
switchport nonegotiate

channel-protocol lacp
channel-group 3 mode active

!

interface GigabitEthernet2/0/2
description ### NAS_DC2 ###
switchport access vlan 13
switchport mode access
switchport nonegotiate
channel-protocol lacp
channel-group 3 mode active

!
interface GigabitEthernet2/0/4
description ### NAS_DC2 ###
switchport access vlan 13
switchport mode access
switchport nonegotiate
channel-protocol lacp
channel-group 3 mode active

Any idea what we did wrong ? We are sure of the configuration on Synology side...

Many thanks in advance ! :-)

[Daniele Giordano]

Hi,

the log shows this

Aug 23 15:26:49.653: %EC-5-L3DONTBNDL2: Gi2/0/2 suspended: LACP currently not enabled on the remote port. (SW1-2)

So seems that the issue is on the remote port on the NAS.

Can you change the cable between two ports?

E.g. move the cable from giga 2/0/2 to 2/0/4 and vice versa.

In this way you can see if the issue follows the port of the switch or the port of the NAS.

If the log will be Gi2/0/4 suspended: LACP currently not enabled on the remote port. (SW1-2), the issue is on the NAS. In the opposite way, if remain on port Gi2/0/2, the issue is on the switch.

Regards.

[klarix]

Thanks for swift answer,

That was my feeling too looking at the message, but sounded strange as this was brand new NAS... 

Good idea to switch the cables, but the DC is 40 Km away, I'll give a try to this and keep you updated (can't test before monday...).

Have a nice day !