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PTP Clock out of Sync on IE3000 Series Switch

Andreas Jaeger
Level 1
Level 1

Hi!

I configured an IE300-Series-Switch to use an ntp server as time source and ptp to at as a boundary clock.

Syncing the internal clock to the NTP time works as expected, but the ptp clock stays completely out of sync.

So my question is how to sync the PTP clock with the intenal clock and/or the NTP time source.

IOS Version is 15.0(2)SE2 IES-LANBASEK9-M

ptp-test-cisco#sh ntp statu

Clock is synchronized, stratum 2, reference is 1.1.1.1

nominal freq is 119.2092 Hz, actual freq is 119.2078 Hz, precision is 2**17

reference time is D569ACF8.27490A93 (15:42:48.153 UTC Mon Jun 17 2013)

clock offset is -0.1309 msec, root delay is 0.91 msec

root dispersion is 17.79 msec, peer dispersion is 10.86 msec

loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000011974 s/s

system poll interval is 512, last update was 402 sec ago.

ptp-test-cisco#sh ptp cl

PTP CLOCK INFO

  PTP Device Type: Boundary clock

  Clock Identity: 0x2C:3F:38:FF:FE:4:D:80

  Clock Domain: 0

  Number of PTP ports: 10

  Priority1: 128

  Priority2: 128

  Clock Quality:

        Class: 248

        Accuracy: Unknown

        Offset (log variance): N/A

  Offset From Master: 0

  Mean Path Delay: 0

  Steps Removed: 0

  Local clock time: 23:57:00 UTC Mar 13 1993

ptp-test-cisco#sh clock

15:50:01.058 UTC Mon Jun 17 2013

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