What can we do when the WTR time of SNCMP is abnormal due to software bug?

The SNCP and SNCMP were switched due to the fiber was cut and entered the WTR state when the fiber restore, the WTR time of SNCP is normal but SNCMP is abnormal. For example , the WTR time was configed is 600s. the state of SNCP wait 600s enter normal after WTR ,but the SNCMP wait 1200s enter normal. 

Version is 5.21.18.50 

 912159      8     AU_AIS                            MJ          end         2013-06-26 12:19:52  2013-06-26 12:24:17  0×01   0×00   0×01   0xff   0xff
 912160      8     AU_AIS                            MJ          end         2013-06-26 12:19:52  2013-06-26 12:24:17  0×01   0×00   0x0c   0xff   0xff


According to analyzed the source code, i found when the SNCP and SNCMP enter the state of WTR at one time. the timer of SNCP was countdown, but the SNCMP wasn’t countdown. after the timer of SNCP was time out, the timer of SNCMP was countdown . so you will see the WTR time of SNCMP  is 1200s. 
N/A

The alarms:

  912159      8     AU_AIS                            MJ          end         2013-06-26 12:19:52  2013-06-26 12:24:17  0×01   0×00   0×01   0xff   0xff
912160      8     AU_AIS                            MJ          end         2013-06-26 12:19:52  2013-06-26 12:24:17  0×01   0×00   0x0c   0xff   0xff

After AU_AIS disappear ,SNCP enter WTR state.wait 600S,the WTR timer time out,SNCP enter IDLE state.

SNCP Switch   26-Ne Name    OptiX OSN 7500   2013-06-26 12:34:18 Source:26-Ne Name-8-T2SL64-1(SDH-1)-VC4-12-VC12:33;Sink:26-Ne Name-17-N1EFT8-1(SDH-1)-VC4-8-VC12:23;
Status: working at working channel;Switching Status: idle;working channel current status: normal;protection channel current status: normal;
SNCP Switch   26-Ne Name    OptiX OSN 7500   2013-06-26 12:24:18 Source:26-Ne Name-8-T2SL64-1(SDH-1)-VC4-12-VC12:33;Sink:26-Ne Name-17-N1EFT8-1(SDH-1)-VC4-8-VC12:23;
Status: working at protection channel;Switching Status: Wait to Restore;working channel current status: normal;protection channel current status: normal;

After AU_AIS disappear ,SNCMP enter WTR state.wait 1200S,the WTR timer time out,SNCMP enter IDLE state.

The addtional information is empty, that is the problem of NMS.
SNCP Switch   26-Ne Name    OptiX OSN 7500   2013-06-26 12:44:18
SNCP Switch   26-Ne Name    OptiX OSN 7500   2013-06-26 12:24:18 Protection Group 1,current work channel:Protection Channel 1,curent status:Normal,Working Channel:normal,Protection Channel 1:normal,Protection Channel 2:normal




Upgrade NEs of versions earlier than  R8C02SPC500 to R8C02SPC500 or a later version 
Upgrade NEs of versions earlier than R9C03SPC300 to R9C03SPC300 or a later version 

 

Thunder-link.com now have Huawei OSN series, MERO series, PTN/TRN series equipment, GPON products, datacom products and various board on promotion, more than 86% off list price, please come to visit www.thunder-link.com; or just email for inquire: sales@thunder-link.com

TwitterLinkedInGoogle+FacebookPinterestTumblrStumbleUponRedditShare

Leave a Reply

Your email address will not be published. Required fields are marked *