Customer have 1 new node interconnect with existing network.
No problem when perform local console for both NEs but do monitoring for remote node.
Compare DCC configuration for both sites, found 1 site configure as "HWECC" and the other site configure as "IP".
Change the "IP" configuration to "HWECC", remote console success.
Checked fiber connection, service is ok when tested with Testgear.
Check ECC by Issue "cm-get-eccroute", can't found remote NE.
DCC (D1-D3) enabled and obtained.
Always have to make sure DCC configuration for interconnect NEs is consistent.