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Cisco Bug: CSCua99959 - Nexus 3000 vPC: LACP timed out or failed on Hot-Standby Link

Last Modified

Mar 06, 2018

Products (4)

  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 3064 Switch
  • Cisco Nexus 3016 Switch
  • Cisco Nexus 3048 Switch

Known Affected Releases

5.0(3)U3(2)

Description (partial)

Symptom:
When connecting a hot-standby LACP connection through a vPC the following log messages are seen:
 
012 Jul  3 09:23:50 ETH_PORT_CHANNEL-3-RSP_TIMEOUT  Component MTS_SAP_LACP timed out on response to opcode:MTS_OPC_PCM_PROTOCOL_UP (for:Ethernet1/26)
2012 Jul  3 09:23:50 ETH_PORT_CHANNEL-3-LACP_ERROR  LACP Misconfiguration on Ethernet1/26
2012 Jul  3 09:23:50 ETHPORT-5-IF_SEQ_ERROR  Error ("LACP timed out or failed") communicating with MTS_SAP_ETH_PORT_CHANNEL_MGR for opcode MTS_OPC_ETHPM_PORT_BRINGUP (RID_PORT: Ethernet1/26) - Ethpm didn't receive a Link UP from the driver on time or had an internal error, check Port Client  and Ethpm 
2012 Jul  3 09:23:50 ETHPORT-2-IF_DOWN_ERROR_DISABLED  Interface Ethernet1/26 is down (Error disabled. Reason:LACP timed out or failed)
 
After these log messages are seen, the related ports go into 'err-disabled' mode.

Conditions:
A device running LACP in hot-standby mode connecting via vPC.
This issue has only been observed on the Nexus 3000 platform
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