From software 2.36 we offer the possibility to see detailed information (over time) about the LAN synchronisation.

These statistics are offered by the DECT base-station.

LAN synchronisation must be enabled for this base to see the correct information.

In the N870 web-interface go to: SETTINGS - Base stations - Synchronisation and click on the Base station name

It will open the base station web-interface, login using

  • Username: Admin
  • Password: N870 admin password

You will see the following information.

 This table shows you the: 

  • ptp-d: ptp clock delay. ptp clock offset to master clock. This value should not exceed 500ns for a longer time
  • dls-d: Measured offset of the local DECT-SYPO signal to the master DECT-SYPO signal. This is the DECT-SYNC criteria and should not exceed 1000ns for a longer time
  • ptp-pd: ptp path delay. This is an indication of the transmission path quality. The account of switches and their processing speed and queue delay's influence this value. Jitter should be as less as possible.

 The latest LAN sync output for more detailed information see this wiki page.

LAN sync log messages.

Aug 18 06:06:39.897 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      22355 | obsrv-mean[ns]:      14663 | delta[ns]:       7692 | delta-rel[%]:         52
Aug 18 06:13:21.504 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      25887 | obsrv-mean[ns]:      14629 | delta[ns]:      11258 | delta-rel[%]:         76
Aug 18 06:13:22.299 dlsd[3736]: >>> ptp-d overshot/peak detected: obsrv-act[ns]:       9534
Aug 18 06:37:51.109 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      33875 | obsrv-mean[ns]:      14653 | delta[ns]:      19222 | delta-rel[%]:        131
Aug 18 06:41:43.910 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      19208 | obsrv-mean[ns]:      14712 | delta[ns]:       4496 | delta-rel[%]:         30
Aug 18 07:09:28.720 dlsd[3736]: >>> ptp-d overshot/peak detected: obsrv-act[ns]:       9066
Aug 18 08:27:32.747 dlsd[3736]: >>> ptp-d overshot/peak detected: obsrv-act[ns]:       9611
Aug 18 08:41:11.151 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      21479 | obsrv-mean[ns]:      14668 | delta[ns]:       6811 | delta-rel[%]:         46
Aug 18 08:53:54.355 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      28681 | obsrv-mean[ns]:      14654 | delta[ns]:      14027 | delta-rel[%]:         95
Aug 18 09:07:19.959 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      21768 | obsrv-mean[ns]:      14609 | delta[ns]:       7159 | delta-rel[%]:         49
Aug 18 09:12:16.761 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      23314 | obsrv-mean[ns]:      14682 | delta[ns]:       8632 | delta-rel[%]:         58
Aug 18 09:19:56.764 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      20625 | obsrv-mean[ns]:      14677 | delta[ns]:       5948 | delta-rel[%]:         40
Aug 18 09:42:45.572 dlsd[3736]: >>> ptp-d overshot/peak detected: obsrv-act[ns]:      10983
Aug 18 10:21:23.186 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      25647 | obsrv-mean[ns]:      14685 | delta[ns]:      10962 | delta-rel[%]:         74
Aug 18 10:31:33.590 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      22286 | obsrv-mean[ns]:      14697 | delta[ns]:       7589 | delta-rel[%]:         51
Aug 18 10:31:34.389 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      22978 | obsrv-mean[ns]:      14710 | delta[ns]:       8268 | delta-rel[%]:         56
Aug 18 10:36:08.791 dlsd[3736]: >>> ptp-d overshot/peak detected: obsrv-act[ns]:      12709
Aug 18 10:40:07.993 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      20455 | obsrv-mean[ns]:      14651 | delta[ns]:       5804 | delta-rel[%]:         39
Aug 18 10:40:36.793 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      25808 | obsrv-mean[ns]:      14639 | delta[ns]:      11169 | delta-rel[%]:         76
Aug 18 10:40:37.592 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      25808 | obsrv-mean[ns]:      14658 | delta[ns]:      11150 | delta-rel[%]:         76
Aug 18 10:46:27.195 dlsd[3736]: >>> ptp-d overshot/peak detected: obsrv-act[ns]:       9385
Aug 18 10:48:08.796 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      22896 | obsrv-mean[ns]:      14659 | delta[ns]:       8237 | delta-rel[%]:         56
Aug 18 11:04:50.402 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      22032 | obsrv-mean[ns]:      14680 | delta[ns]:       7352 | delta-rel[%]:         50
Aug 18 11:07:23.203 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      24862 | obsrv-mean[ns]:      14649 | delta[ns]:      10213 | delta-rel[%]:         69
Aug 18 11:10:40.808 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      21071 | obsrv-mean[ns]:      14676 | delta[ns]:       6395 | delta-rel[%]:         43
Aug 18 11:16:15.206 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      21107 | obsrv-mean[ns]:      14687 | delta[ns]:       6420 | delta-rel[%]:         43
Aug 18 11:30:12.011 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      25950 | obsrv-mean[ns]:      14695 | delta[ns]:      11255 | delta-rel[%]:         76
Aug 18 11:33:17.612 dlsd[3736]: >>> ptp-d overshot/peak detected: obsrv-act[ns]:       9880
Aug 18 11:33:53.612 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      19179 | obsrv-mean[ns]:      14667 | delta[ns]:       4512 | delta-rel[%]:         30
Aug 18 11:34:27.212 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      23773 | obsrv-mean[ns]:      14722 | delta[ns]:       9051 | delta-rel[%]:         61
Aug 18 11:40:52.015 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      39693 | obsrv-mean[ns]:      14705 | delta[ns]:      24988 | delta-rel[%]:        169
Aug 18 12:10:52.825 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      19384 | obsrv-mean[ns]:      14668 | delta[ns]:       4716 | delta-rel[%]:         32
Aug 18 12:11:28.025 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      21920 | obsrv-mean[ns]:      14693 | delta[ns]:       7227 | delta-rel[%]:         49
Aug 18 12:16:36.028 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      26588 | obsrv-mean[ns]:      14645 | delta[ns]:      11943 | delta-rel[%]:         81
Aug 18 13:02:13.642 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      37474 | obsrv-mean[ns]:      14694 | delta[ns]:      22780 | delta-rel[%]:        155
Aug 18 13:04:04.843 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      20349 | obsrv-mean[ns]:      14653 | delta[ns]:       5696 | delta-rel[%]:         38
Aug 18 13:08:55.245 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      23086 | obsrv-mean[ns]:      14632 | delta[ns]:       8454 | delta-rel[%]:         57
Aug 18 13:16:19.247 dlsd[3736]: >>> ptp-d overshot/peak detected: obsrv-act[ns]:      14193
Aug 18 13:16:20.046 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      30554 | obsrv-mean[ns]:      14668 | delta[ns]:      15886 | delta-rel[%]:        108
Aug 18 13:41:58.456 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      27882 | obsrv-mean[ns]:      14717 | delta[ns]:      13165 | delta-rel[%]:         89
Aug 18 13:41:59.255 dlsd[3736]: >>> ptp-d overshot/peak detected: obsrv-act[ns]:      11366
Aug 18 14:02:40.863 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      21270 | obsrv-mean[ns]:      14680 | delta[ns]:       6590 | delta-rel[%]:         44
Aug 18 14:43:32.079 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      34205 | obsrv-mean[ns]:      14681 | delta[ns]:      19524 | delta-rel[%]:        132
Aug 18 14:52:52.880 dlsd[3736]: >>> ptp-pd overshot/peak detected: obsrv-act[ns]:      26703 | obsrv-mean[ns]:      14671 | delta[ns]:      12032 | delta-rel[%]:         82

The network load statistics

The network statistics

eth0      Link encap:Ethernet  HWaddr 7C:2F:80:C7:32:60  
          inet addr:10.150.170.21  Bcast:10.150.170.255  Mask:255.255.255.0
          inet6 addr: fe80::7e2f:80ff:fec7:3260%71/64 Scope:Link
          inet6 addr: fd0e:c149:5cb3::1%71/64 Scope:Global
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1317938 errors:0 dropped:38231 overruns:0 frame:0
          TX packets:115093 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:139068950 (132.6 MiB)  TX bytes:10949298 (10.4 MiB)
          Interrupt:25 Base address:0x8000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1%71/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:733 errors:0 dropped:0 overruns:0 frame:0
          TX packets:733 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:21257 (20.7 KiB)  TX bytes:21257 (20.7 KiB)