告警信息

CP_TEL-PATH_MIS
B站点告警参数如下：
Path=5,Board=7,Port=1,Local path state=10,and remote path state=0；

C站点告警参数如下：
Path=5,Board=12,Port=1,Local path state=10,and remote path state=0；

Processing

According to the alarm parameters, you can get the following information:
1. Port 7-1 of site B is docked with port 11-1 of site A. The VC4:5 time slot state of port 7-1 at the local end of site B is local path state=10 (i.e., static occupancy), and the remote path state of port 11-1 at the opposite end is remote path state=0 (i.e., idle). 2. Port 12-1 of site C is in the same state as port 12-1 of site B, and the remote path state of port 12-1 of site C is remote path state=0 (i.e., idle).
2. Site C port 12-1 is docked with site D port 8-1, site C local port 12-1 VC4:5 time slot state Local path state=10 (i.e., static occupancy), and the opposite end site D port 8-1 VC4:5 time slot state is remote path state=0 (i.e., idle).

Second, through the network management again to view the service layer in the customer side of the business, found that the silver service layer tunnel without any VC12 service, consulting the customer to learn that the path of the business for the temporary scheduling business, channel use is completed above the VC12 service has been deleted.

Since the customer first establishes a silver-level service layer tunnel from A to D when establishing the VC12 service from site A to site D, and deletes all the lower-order services in the tunnel after the service scheduling is completed but does not delete the corresponding service layer tunnels, the VC4-level bidirectional crossover is automatically generated at sites B and C when establishing the service layer tunnels from site A to site D. Therefore, the customer deletes only the VC12-level services after the VC4-level crossings at sites B and C remain, which causes sites B and C to generate the CP_TEL_PATH_MIS (Channel Status Inconsistency at Both Ends of the TE Link) alarm.

After the intelligent service layer tunnels corresponding to the alarms are removed, the CP_TEL_PATH_MIS alarms at sites B and C disappear, and the problem is solved.

根因

TE链路两端通道状态不一致，可能原因如下：
1. 预留资源操作不完整，一端预留，另一端空闲；
2. 资源配置或释放操作不完全，一端为占用，另一端预留或空闲；
3. 业务转换过程不充分，一端为静态业务，另一端为智能业务；

Solution

Recommendations and Summary

When deleting tunnel services in Smart Domain, you must pay attention to the completeness of the released resources, otherwise it is very easy to generate alarms due to the inconsistency of the time slots of the TE links at both ends due to the cross-residue.