Chinese
English
Description of the problem
Frequent network fiber cuts, network management "four-step approach" after the sudden increase in many discrete services.
Processing
1. Check the network element pair version information:
9500:
:ver
BIOS 8.05.05T01 20060111 11:06:19 inactive
ExtBios 9.05.09T01 20070820 19:24:28 active
NeSoft(P) 5.15.05.13P01 20080902 17:03:20
Platform(D) 5.00.10.B01CD05 20080822 14:35:28
AosSoft(P) 5.99.05.01B1CP1 20080623 13:02:24
Logic (U27)200(U65)100
Dsp
NG SDH version:
:ver
BIOS 08.09.45T01 20060106 14:21:44 inactive
ExtBios 09.09.61T01 20081107 15:52:20 active
NeSoft(P) 5.21.18.12P01 20081030 20:54:48
Platform(D) 5.00.10.B01CD05 20080822 14:35:28
AosSoft(P) 5.99.05.01B1CP1 20080623 13:02:24
Logic (U2)3
2. check whether the intelligent tunnel service has been rerouted and is returnable to the tunnel service. the low-order service in the tunnel can be seen in the SDH cross management interface of the tunnel first and last nodes of the Network Element Manager with double-transmitter crossings.
3. Repair the fiber alarm on the return route of the returnable tunnel service so that it returns successfully.
Root Cause
After the returnable tunnel service is rerouted, unidirectional crossings are replicated to the old path, and when the network administrator performs a path search, it finds that these crossings are unidirectional and considers the path to be incomplete. So it is shown as a discrete service.
Solution
Circumvention solution: Set the returnable tunnel to a non-returnable tunnel.
Complete solution: Smart version upgrade to GCP V100R005C01B027 and above, corresponding to host version NG SDH: R8C02SPC200+SPH201 and above. 9500: V100R006C03SPC200+SPH202 and above.
