We have a C9300-48P switch connected to C9200CX-8UXG-2X
Switch A: 9300
- show version
Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 64 C9300-48P 16.9.4 CAT9K_IOSXE INSTALL
- sh etherchannel 4 summary
Number of channel-groups in use: 4
Number of aggregators: 4
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
4 Po4(SU) LACP Gi1/0/42(P) Gi1/0/43(s)
#show run int Gi1/0/42
Building configuration...
Current configuration : 162 bytes
!
interface GigabitEthernet1/0/42
switchport trunk allowed vlan 92,93,2211
switchport mode trunk
channel-group 4 mode active
end
#show run int Gi1/0/43
Building configuration...
Current configuration : 162 bytes
!
interface GigabitEthernet1/0/43
switchport trunk allowed vlan 92,93,2211
switchport mode trunk
channel-group 4 mode active
end
show run int po4
Building configuration...
Current configuration : 125 bytes
!
interface Port-channel4
switchport trunk allowed vlan 92,93,2211
switchport mode trunk
Switch B: 9200
- show version
Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 10 C9200CX-8UXG-2X 17.12.03 CAT9K_LITE_IOSXE INSTALL
#sh run int te1/1/1
Building configuration...
Current configuration : 163 bytes
!
interface TenGigabitEthernet1/1/1
switchport trunk allowed vlan 92,93,2211
switchport mode trunk
channel-group 31 mode active
end
#sh run int te1/1/2
Building configuration...
Current configuration : 163 bytes
!
interface TenGigabitEthernet1/1/2
switchport trunk allowed vlan 92,93,2211
switchport mode trunk
channel-group 31 mode active
end
#sh run int po31
Building configuration...
Current configuration : 124 bytes
!
interface Port-channel31
switchport trunk allowed vlan 92,93,2211
switchport mode trunk
end
CDP info
Switch A Gig 1/0/42 - SwitchB Ten 1/1/2
Switch A Gig 1/0/43 - SwitchB Ten 1/1/1
The port is constantly flapping going UP then DOWN then suspended with this log "suspended: LACP currently not enabled on the remote port",
533264: Feb 17 2025 17:19:31.643 CET: %ETC-5-L3DONTBNDL2: Gi1/0/43 suspended: LACP currently not enabled on the remote port.
533265: Feb 17 2025 17:20:00.103 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533266: Feb 17 2025 17:20:06.636 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533267: Feb 17 2025 17:20:15.055 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533268: Feb 17 2025 17:20:21.570 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533269: Feb 17 2025 17:20:24.304 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533270: Feb 17 2025 17:20:34.439 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533271: Feb 17 2025 17:20:41.670 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533272: Feb 17 2025 17:20:44.805 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533273: Feb 17 2025 17:20:54.132 CET: %ETC-5-L3DONTBNDL2: Gi1/0/43 suspended: LACP currently not enabled on the remote port.
533274: Feb 17 2025 17:21:24.862 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533275: Feb 17 2025 17:21:27.674 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533276: Feb 17 2025 17:21:31.211 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533277: Feb 17 2025 17:21:37.802 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533278: Feb 17 2025 17:21:47.530 CET: %ETC-5-L3DONTBNDL2: Gi1/0/43 suspended: LACP currently not enabled on the remote port.
533279: Feb 17 2025 17:21:51.763 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533280: Feb 17 2025 17:22:05.830 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533281: Feb 17 2025 17:22:08.164 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533282: Feb 17 2025 17:22:11.056 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533283: Feb 17 2025 17:22:19.788 CET: %ETC-5-L3DONTBNDL2: Gi1/0/43 suspended: LACP currently not enabled on the remote port.
533284: Feb 17 2025 17:22:23.254 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533285: Feb 17 2025 17:22:26.384 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533286: Feb 17 2025 17:22:35.332 CET: %ETC-5-L3DONTBNDL2: Gi1/0/43 suspended: LACP currently not enabled on the remote port.
533287: Feb 17 2025 17:22:38.745 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
533288: Feb 17 2025 17:22:41.554 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to up
533289: Feb 17 2025 17:22:48.539 CET: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/43, changed state to down
The issue is occurring on a couple of devices of the same model and version.
