CES.TDM.PWClockStateChg

Description

The Adaptive Clock Recovery recovers TDM service clock based on the CES pseudo-wire packet arrival rate and it has the following operational states: Freerun: This state indicates that the clock recovery has not started. This condition occurs when the CES pseudo-wire configured for clock recovery has not yet received packets from the remote end of the CES pseudo-wire. Holdover: This state indicates that the clock recovery is in holdover mode and not active. In this state, the last stable recovered service clock is used as the clock source. This condition occurs when the CES pseudo-wire configured for clock recovery has switched to LOSY state. Converge: This state indicates that the clock recovery has begun and the recovered service clock is being stabilized. This condition occurs when the CES pseudo-wire configured for clock recovery starts receiving remote CES pseudo-wire packets without significant loss. Normal: This state indicates that the clock recovery has reached stable state in recovering service clock from the CES pseudo-wire packet stream. This condition occurs when the CES pseudo-wire configured for clock recovery keeps receiving remote CES pseudo-wire packets without significant loss. Active: This state indicates that the clock recovery is actively stabilizing the recovered service clock that has deviated due to temporary loss in the CES pseudo-wire packet stream. This condition occurs when the CES pseudo-wire configured for packet recovery switches to LOSY state. When the LOSY state of the CES pseudo-wire prolongs, the clock recovery switches to Holdover when failed to stabilize the recovered service clock.

Remedy

No action required - Informational message only.

Severity

Info

Message Text

CES %cesName% %clockType% clock recovered from %peerAddr% changed state to %clockState%

Message Parameters

Name Type
cesName String
clockType String
peerAddr String
clockState String

Applicable Platforms

  • Summit family switches
  • I386 virtual machine switch simulator