There are 3 NE.The configuration is chain.
when i try to start to configure all NE (Metro 1000),connect from NE by using NES software at OLT site, i only get 2 NE.It is lack of 1 NE.
There is no alarm indication at Metro 1000 at OLT side
The simple one is check ID for every NE.The ID can not be the same for every NE.
I found two NE has the same ID.Then i change one NE ID.
try to search NE again by using NES software.Now i can get all NE,then i configure all as ussual.and the service is normal.
There are some analyze :
1. Maybe the optical attenuation is too big.
2. Maybe there are some problem in board
3. Maybe the ID is the same
it is better for one network there are different NE ID for each NE