one day we prepare to upload a new WDM link without OSC but ESC to each site, we can direct reach Gateway NE through IP, but the other NE which allocated to this Gateway NE are not reachable, the ECC route of this Gateway NE is Null, checked through :cm-get-eccroute
1. check the ECC status on Gateway NE with commandline :cm-get-bdinfo, the result displayed the channel status are ok.
2. site commissioner login to the Non-gateway NE by local, and check with :cm-get-eccroute, now we can reach all the other NE. except this Gateway NE,
3. compare the ecccrc setting on Non-gateway NE and Gateway NE with :cm-get-ecccrc, and we found the function on Gateway NE was opened, but Non-gateway NE are not opened,
4. close this function on Gateway NE throgh :cm-set-ecccrc:close, the the ESC channel communication are restored.
normal ECCcrc function was close by default, if we want to use this function, we must make sure both sides have the same status. both open or close. mismatch configuration with cause the ESC communication fails.