LINK AGG secondary not operating

[slaskaridis]

Question:
Shall the linkagg admin key number, be the same in both switches (CORE and Access)?
for example:
acp linkagg 1 actor admin key 1, should be "1" in both the CORE linkagg and the Access VLAN?
At this moment it is not.

[slaskaridis]

Question: Does the LACP for the first time need to see both links active to be created?

[Gleylancer]

The lacp key is just a local number to bind physical interfaces to an identifier. It does not need to be the same on both sides of the link.

You can have an lacp with a size of 8 and only 1 configured link - then add or remove links at any time you wish.

[slaskaridis]

Hi Gleylancer,
the problem is solved!!

it should be an issue on the core switches, because the command
show linkagg agg 17 port
showed only one port instead of 2
I rebooted both VC cores and after about 20 minutes all secondary links are working.

thanks a lot!