Network Clock State Change on Pseudo-wired E1 (CEM)

Unanswered Question
Jun 24th, 2010

Hi,


Good day.


Just want to what do these logs mean or happened to the network to have these kinds of logs.


Jun 22 15:34:56.058 UTC: %TOP_MODULE-6-CLK_STATUS_CHANGE: Recovered clock status changed to HOLDOVER
Jun 22 15:34:56.058 UTC: %NET_CLK_SEL-6-NETCLK_STATE_CHANGE: Network clock state change to HOLD OVER (Packet Timing)
Jun 22 15:34:56.086 UTC: %TOP_MODULE-6-CLK_STATUS_CHANGE: Recovered clock status changed to ACQUIRING
Jun 22 15:49:57.720 UTC: %NET_CLK_SEL-6-NETCLK_HOLDOVER_TIMEOUT: Network clock holdover timeout exceeded for reference 1
Jun 22 15:49:57.720 UTC: %NET_CLK_SEL-6-NETCLK_STATE_FREE_RUN: Network clock commanded to free run.
Jun 22 15:55:23.999 UTC: %TOP_MODULE-6-CLK_STATUS_CHANGE: Recovered clock status changed to FREQ LOCK
Jun 22 15:55:25.731 UTC: %NET_CLK_SEL-6-NETCLK_STATE_CHANGE: Network clock state change to SELECTED (Packet Timing)
Jun 22 15:55:40.715 UTC: %NET_CLK_SEL-6-NETCLK_STATE_CHANGE: Network clock state change to LOCK (Packet Timing)


Thanks and regards,

Eugene

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Giuseppe Larosa Sat, 07/03/2010 - 10:53

Hello Eugene,


the system missed the master clock for several minutes


un 22 15:34:56.058 UTC: %TOP_MODULE-6-CLK_STATUS_CHANGE: Recovered clock status changed to HOLDOVER
Jun 22 15:34:56.058 UTC: %NET_CLK_SEL-6-NETCLK_STATE_CHANGE: Network clock state change to HOLD OVER (Packet Timing)
Jun 22 15:34:56.086 UTC: %TOP_MODULE-6-CLK_STATUS_CHANGE: Recovered clock status changed to ACQUIRING
Jun 22 15:49:57.720 UTC: %NET_CLK_SEL-6-NETCLK_HOLDOVER_TIMEOUT: Network clock holdover timeout exceeded for reference 1
Jun 22 15:49:57.720 UTC: %NET_CLK_SEL-6-NETCLK_STATE_FREE_RUN: Network clock commanded to free run.
Jun 22 15:55:23.999 UTC: %TOP_MODULE-6-CLK_STATUS_CHANGE: Recovered clock status changed to FREQ LOCK


you should check what is the reference clock in the system: if it is an external link, it might have experienced problems during this time window


Hope to help

Giuseppe

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