LACP issues

[Jason_Hilt]

I have some 450G2 switches that I can not get LACP LAG to work on. Core 670 switch is grouping ports 19 and 20. Sh lacp lag displays:
Member Port Rx Sel Mux Actor Partner
Port Priority State Logic State Flags Port
--------------------------------------------------------------------------------
19 0 Current Selected Collect-Dist A-GSCD-- 1049
20 0 Current Selected Attached A-GS---- 2049
================================================================================
Actor Flags: A-Activity, T-Timeout, G-Aggregation, S-Synchronization
C-Collecting, D-Distributing, F-Defaulted, E-Expired

Remote switch shows:
Member Port Rx Sel Mux Actor Partner
Port Priority State Logic State Flags Port
--------------------------------------------------------------------------------
1:49 0 Current Selected Collect-Dist A-GSCD-- 1019
2:49 0 Defaulted Unselected Detached A-G---F- 0
================================================================================
Actor Flags: A-Activity, T-Timeout, G-Aggregation, S-Synchronization
C-Collecting, D-Distributing, F-Defaulted, E-Expired

I have tried moving the fiber cable to different pairs. removed and added the grouping. Disabled ports, renabled ports, all with no affect. Link lights are on both switches.

What can be wrong?

Not sure if this is a connected issue or not, but all of my network switches are also showing a loop detected on the uplink port from the core. ELRP is active on edge switches with the uplink ports excluded.
Slot-1: [CLI:vlan:2] LOOP DETECTED : 846382 transmitted, 9114521 received, ingress slot:port (1:49) egress slot:port (1:49)

Fairly new to Extreme switching so bear with me.

[Jason_Hilt]

So here is the trouble port after a SFP reseat, fiber pair change, and disable/enable.

Member Port Rx Sel Mux Actor Partner
Port Priority State Logic State Flags Port
--------------------------------------------------------------------------------
2:49 0 Defaulted Unselected Detached A-G---F- 0
Up : Yes
Enabled : Yes
Link State : Up
Actor Churn : True
Partner Churn : True
Ready_N : No
Wait pending : No
Ack pending : No
LAG Id:
S.pri:0 , S.id:00:00:00:00:00:00, K:0x0000, P.pri:0 , P.num:0
T.pri:0 , T.id:00:00:00:00:00:00, L:0x0000, Q.pri:0 , Q.num:0
Stats:
Rx - Accepted : 0
Rx - Dropped due to error in verifying PDU : 0
Rx - Dropped due to LACP not being up on this port : 0
Rx - Dropped due to matching own MAC : 0

Tx - Sent successfully : 128
Tx - Transmit error : 0
================================================================================
Actor Flags: A-Activity, T-Timeout, G-Aggregation, S-Synchronization
C-Collecting, D-Distributing, F-Defaulted, E-Expired

Here is the core side of the link

Member Port Rx Sel Mux Actor Partner
Port Priority State Logic State Flags Port
--------------------------------------------------------------------------------
11 0 Current Selected Attached A-GS---- 2049
Up : Yes
Enabled : Yes
Link State : Up
Actor Churn : False
Partner Churn : True
Ready_N : Yes
Wait pending : No
Ack pending : No
LAG Id:
S.pri:0 , S.id:00:04:96:9b:37:50, K:0x03f3, P.pri:0 , P.num:1011
T.pri:0 , T.id:02:04:96:9b:02:c4, L:0x0419, Q.pri:0 , Q.num:2049
Stats:
Rx - Accepted : 268
Rx - Dropped due to error in verifying PDU : 0
Rx - Dropped due to LACP not being up on this port : 0
Rx - Dropped due to matching own MAC : 0

Tx - Sent successfully : 13
Tx - Transmit error : 0
================================================================================
Actor Flags: A-Activity, T-Timeout, G-Aggregation, S-Synchronization
C-Collecting, D-Distributing, F-Defaulted, E-Expired

Going to try a different SFP next.

[Erik_Auerswald]

Hi Jason,

with "show lacp member-port 1:49 detail" you get counters regarding sent and received LACP PDUs, and the LACP system IDs.

I would expect that port 2:49 does not receive LACP PDUs.

Erik

[Jason_Hilt]

sh edp port 1:49,2:49 shows correct remote ports on the core.
Port Neighbor Neighbor-ID Remote Age Num
Port Vlans
=============================================================================
1:49 FC-Core-670 00:00:00:04:96:9b:37:50 1:12 9 15
2:49 FC-Core-670 00:00:00:04:96:9b:37:50 1:11 5 15
=============================================================================

sh lacp lag 1:49 after a disable/enable on port 2:49. RX state went to expired before going to Defaulted.

Member Port Rx Sel Mux Actor Partner
Port Priority State Logic State Flags Port
--------------------------------------------------------------------------------
1:49 0 Current Selected Collect-Dist A-GSCD-- 1012
2:49 0 Defaulted Unselected Detached A-G---F- 0
================================================================================

Going to try reseating the optics...again and maybe a different fiber pair.

[Erik_Auerswald]

Hi Jason,

did you verify the cabling with e.g. "show edp port 19,20" resp. "show edp port 1:49,2:49"?

You can use the command "show lacp member-port detail" for more info regarding LACP on the ports.

Erik

[Ty_Kolff]

I have others running just fine on 21.1.1 as well as 21.1.2, but we discovered this issue while doing bench testing before putting these switches into production.