A certain system is configured with SOM, only the optical power information is in the query spectrum analysis data, and the OSNR is displayed as "---". The OSNR is abnormal at this time, the possible reason is ()?
Hqos can provide complete traffic statistics function. Network administrators can monitor the bandwidth occupied by various services, and reasonably divide the bandwidth of each service by analyzing the traffic.
The ring network of the OSN6800 equipment group was newly opened, and ODU1-SNCP/N protection was enabled. The engineer reported that a switch occurred one day and has not been restored, but there is no problem with the optical cable. There is an ODU_SNCP_PS alarm on the corresponding ND2 optical port. The possible reasons are:
The common models of Qos mainly include Best Effort model, Integrated Service model, Differentiated Service model. Which one is the Differentiated Service model described below?
When 15 VC-12 services are created on the STM-1 frame in sequence from 1 to 15, and then VC-3 services are created on the second VC-3 of this STM-1 frame, what is the result displayed by the network management system?
The optical power of one wave is 3dBm, and the optical power of the other wave is 5dBm. The total optical power after the two waves are combined is 3+5 = 8dBm
The gain of the OAU board is 23db, and 1% of the total output power of the OAU board is used for MON detection. The output optical power of the tested MON port is 8dbm, then the input optical power of the IN port of the OAU board is
Synchronization means that signals maintain a certain strict specific relationship in frequency or phase, that is, their corresponding effective instants appear at the same average rate.
A path is a transmission entity, which is connected by a pair of "one-way paths" that can simultaneously transmit information in opposite directions between their respective outputs and inputs.
GR (Graceful Restart) is one of the key technologies to provide HA. GR can make the entire system uninterrupted in the event of a failure switch, and can realize rapid network convergence under normal conditions.