Problem Description

An OSN7500 in a bureau's ASON network suddenly fails to configure services on the network administrator, prompting that a cross-connection already exists.

Alarm message

Cross-connection already exists, error code: 38702

Processing

1、Command line configuration found that the configuration can be successful

2、Synchronize the cross with the four-part method and find the same frequency timeout

3., engineers using their own computer network management found that different network management version of the problem phenomenon is consistent, T2000R6 and R7 version of the same can not configure the business.

4. Query network management to confirm the error code returned by the device.

5, return to the database and the first line of business comparison found cfg-get-xc present network than the laboratory less than 20 entries, and itgXC consistent.

6, compared cfg-get-allxc found business one to, part of the business for the tunnel-xc state.

7. 918 3 9 1 19 15 1 5 1 vc12 active tunnelxc NORMAL

919 3 9 1 20 15 1 5 2 vc12 active tunnelxc NORMAL

920 3 10 1 19 15 1 5 3 vc12 active tunnelxc NORMAL

921 3 10 1 20 15 1 5 4 vc12 active tunnelxc NORMAL

2177 15 4 3 34 15 1 5 5 vc12 active tunnelxc NORMAL

2178 15 4 3 35 15 1 5 6 vc12 active tunnelxc NORMAL

2195 15 4 3 36 15 1 5 7 vc12 active tunnelxc NORMAL

2196 15 4 3 37 15 1 5 8 vc12 active tunnelxc NORMAL

2289 15 4 3 38 15 1 5 9 vc12 active tunnelxc NORMAL

2290 15 4 3 39 15 1 5 10 vc12 active tunnelxc NORMAL

2412 15 4 3 40 15 1 5 11 vc12 active tunnelxc NORMAL

2413 15 4 3 41 15 1 5 12 vc12 active tunnelxc NORMAL

2414 15 4 6 36 15 1 5 13 vc12 active tunnelxc NORMAL

2415 15 4 6 37 15 1 5 14 vc12 active tunnelxc NORMAL

2416 15 4 6 38 15 1 5 15 vc12 active tunnelxc NORMAL

2417 15 4 6 39 15 1 5 16 vc12 active tunnelxc NORMAL

2418 15 4 6 40 15 1 5 17 vc12 active tunnelxc NORMAL

2419 15 4 6 41 15 1 5 18 vc12 active tunnelxc NORMAL

2420 15 4 6 42 15 1 5 19 vc12 active tunnelxc NORMAL

2421 15 4 6 43 15 1 5 20 vc12 active tunnelxc NORMAL

Use :cfg-ason-setowner:xcid,xc to convert all the above tunnelxc type services to xc

e.g.

:cfg-ason-setowner:918,xc

:cfg-ason-setowner:919,xc

8. Confirm that the reason for not being able to configure the service is that the network management assigns the crossings to actually exist on the network element, and these crossings are transient. It is caused by tunnel optimization or failure after rerouting.

Root Cause

1. Network management issues;

2、Equipment problems;

Suggestions and Summary

When ASON network network quality is not good, it is easy to re-route frequently, tunnel optimization, it is recommended that maintenance engineers regularly use the four-step method to synchronize data has to keep ASON network security.