Hello,
I have C93180YC-EX switches in a vPC running firmware version 9.3(10). I have a Synology NAS connected to them via mLACP, and every time I reboot the NAS, the ports on both switches transition into the errdisable state.
Initially, the Nexus switches report that LACP is not enabled on the peer device, so the port channel member (i.e., the physical port) gets suspended. See the log:
%LACP-5-LACP_SUSPEND_INDIVIDUAL: LACP port Ethernet1/11(0x1a001400) of port-channel Ethernet1/11(0x1a001400) not receiving any LACP BPDUs suspending (individual) port
%LACP-5-LACP_SUSPEND_INDIVIDUAL: LACP port Ethernet1/11(0x1a001400) of port-channel Ethernet1/11(0x1a001400) not receiving any LACP BPDUs suspending (individual) port
%ETH_PORT_CHANNEL-5-PORT_SUSPENDED: Ethernet1/11: Ethernet1/11 is suspended
Afterward, I see the following messages in the log:
%ETHPORT-5-IF_DUPLEX: Interface Ethernet1/11, operational duplex mode changed to Full
%ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/11, operational Receive Flow Control state changed to off
%ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/11, operational Transmit Flow Control state changed to off
%ETHPORT-5-SPEED: Interface port-channel111, operational speed changed to 10 Gbps
%ETHPORT-5-IF_DUPLEX: Interface port-channel111, operational duplex mode changed to Full
%ETHPORT-5-IF_RX_FLOW_CONTROL: Interface port-channel111, operational Receive Flow Control state changed to off
%ETHPORT-5-IF_TX_FLOW_CONTROL: Interface port-channel111, operational Transmit Flow Control state changed to off
%ETHPORT-5-SPEED: Interface Ethernet1/11, operational speed changed to 10 Gbps
%ETHPORT-5-IF_DUPLEX: Interface Ethernet1/11, operational duplex mode changed to Full
%ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/11, operational Receive Flow Control state changed to off
%ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/11, operational Transmit Flow Control state changed to off
%ETHPORT-5-SPEED: Interface port-channel111, operational speed changed to 10 Gbps
%ETHPORT-5-IF_DUPLEX: Interface port-channel111, operational duplex mode changed to Full
%ETHPORT-5-IF_RX_FLOW_CONTROL: Interface port-channel111, operational Receive Flow Control state changed to off
%ETHPORT-5-IF_TX_FLOW_CONTROL: Interface port-channel111, operational Transmit Flow Control state changed to off
Finally, the port transitions into the errdisable state:
%ETHPORT-5-IF_DOWN_ERROR_DISABLED: Interface Ethernet1/11 is down (Error disabled. Reason:Too many link flaps)
I am not sure:
a) Whether these two occurrences (i.e., LACP not active and “Too many link flaps”) are related in any way.
b) Whether there is a way to configure errdisable recovery per port, so that it does not have a global impact on the entire switch.
Thank you in advance for your responses. 