A large number of optical fibers cut in the ASON network of an abroad customer, and some ASON services were interrupted because they failed to be rerouted.
1.When the TCEVENT message is blocked, the following information is displayed:
RSVP TCEVENT INFO
INGRESS EGRESS INDEX TOTAL_INPUT INPUT_TYPE PKT_TYPE TOTAL_TC &TC_ACTION SIZEOF(TC) TC_ACTION_TYPE TC_UNDERWAY
192.168.10.4 192.168.10.3 202 66 0x21840007 0 1 0x07c2ebd8 0x00000058 0x01 0x01
192.168.10.4 192.168.10.3 217 67 0x2184000b 0 3 0x07c2d120 0x00000058 0x01 0x01
192.168.10.4 192.168.10.3 224 65 0x21840001 0 1 0x079381b0 0x00000058 0x01 0x01
Total records: 3
2.Disable the anti-contention mechanism by running the following command:
3.ASON service was able to be reroute, and service restored
1.The TCEVENT message is blocked in this ASON NE. Consequently, these services fail to be rerouted and then interrupted. In addition, the operations such as
optimizing or deleting the services fail or partially fail.
3.Blocking of the TCEVENT message occurs when the anti-contention mechanism of ASON services is applied to a special scenario.
4.R&D engineer reproduces the live-network problem in the laboratory. The anti-contention mechanism, which is a function developed for a special scenario of a carrier, aims to rapidly and successfully reroute certain services when a large
number of fibers are cut and when network resources become insufficient.
5.The customer can work around the TCEVENT blocking problem by disabling the anti-contention mechanism.
If there is no special request for anti-contention mechanism, please disable it.