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Community Member

Problem with Cisco 3925 gateway and CUCM 8.6.1

Hello all,

We are getting the message "%MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2" on our router 3925 (using IOS c3900-universalk9-mz.SPA.152-4.M4.bin) log. Does anyone know what is happing? Follow our controller config:

 

controller E1 0/0/0
 framing NO-CRC4
 line-termination 75-ohm
 ds0-group 0 timeslots 1-15,17-31 type r2-digital r2-compelled ani
 cas-custom 0
  country brazil
  metering
  debounce-time 20
  release-guard-time 1500
  seizure-ack-time 78
  double-answer
  answer-signal group-b 1
 description E1_OI_22723000
!
controller E1 0/0/1
 framing NO-CRC4
 line-termination 75-ohm
 ds0-group 0 timeslots 1-15,17-31 type r2-digital r2-compelled ani
 cas-custom 0
  country brazil
  metering
  debounce-time 20
  release-guard-time 1500
  seizure-ack-time 78
  double-answer
  answer-signal group-b 1
 description E1_OI_22723000

 

 

network-clock-participate wic 0
network-clock-participate wic 1
network-clock-select 1 E1 0/0/0
network-clock-select 2 E1 0/0/1

 

3 REPLIES
Community Member

Linkflap?Problem with cable

Linkflap?
Problem with cable?
Who working as clock source?

Execute command show controller e1.

Show results

Cisco Employee

Hi,From config I can see you

Hi,

From config I can see you are taking clocking from 2 source. 1st one is E1 0/0/0 and the backup is E1 0/0/1. So if for some reason we are not getting clocking from telco on the primary line i.e E1 0/0/0, router will automatically fall back to the second clock source which is E1 0/0/1.

So that is the reason you are seeing messages "%MARS_NETCLK-3-CLK_TRANS: Network clock source transitioned from priority 1 to priority 2".

I will suggest you to get in touch with Telco and check the lines.

You can also check for any slip errors on the controller which is caused by clocking using the command "show controller e1".

Community Member

Follow show controller E1

Follow show controller E1 result. There is no sleep. I'll get in touch with Telco to see if we are having problems with the clock on this circuits.

 

E1 0/0/0 is up.
  Applique type is Channelized E1 - unbalanced
  Description: E1_OI_22723000
  No alarms detected.
  alarm-trigger is not set
  Version info FPGA Rev: 08121917, FPGA Type: PRK4
  Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.
  International Bit: 1, National Bits: 11111
  Data in current interval (856 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Total Data (last 24 hours)
     0 Line Code Violations, 4 Path Code Violations,
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
     1 Errored Secs, 1 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
E1 0/0/1 is up.
  Applique type is Channelized E1 - unbalanced
  Description: E1_OI_22723000
  No alarms detected.
  alarm-trigger is not set
  Version info FPGA Rev: 08121917, FPGA Type: PRK4
  Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.
  International Bit: 1, National Bits: 11111
  Data in current interval (859 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Total Data (last 24 hours)
     0 Line Code Violations, 0 Path Code Violations,
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

 

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