Preview Tool

Cisco Bug: CSCur64955 - CFM invalid level CCMs taking too long to time out, delay in show cmds

Last Modified

Jul 30, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases


Description (partial)


On a Cisco IOS-XR router with Ethernet CFM configuration. When a local MEP is receiving CCMs containing the wrong maintenance domain level from a peer MEP, the following symptoms may be seen:
 - When CCMs with the wrong level are first received from the peer, a timeout notification may follow shortly (e.g. via SNMP trap or logging), even though CCMs with the wrong level are still being received from the peer
 - When CCMs stopped being received from the peer, the peer MEP may not be marked as timed out as quickly as it should be.
 - When querying CFM local or peer MEPs operational state, either by the cli (e.g. <CmdBold>show ethernet cfm local meps<noCmdBold>) or XML, up to a 5 second delay may be seen before results are returned.


The Symptom is only seen when there is Ethernet CFM configuration, with at least one local MEP configured, the local MEP's CCM processing is offloaded to software/hardware (this can be checked by running <CmdBold>show ethernet cfm local meps detail<noCmdBold>), and the local MEP is receiving wrong level CCMs from at least one peer MEP.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.