SDH MUX - Network Level Protection

:::SDH MUX - Network Level Protection:::
The network level protection includes MSP protection, SNCP protection and DNI protection.-

1. Linear MSP
-- The linear MSP supported by the equipment are 1+1 single ended switching, 1+1 dual ended switching and 1:N dual ended switching MSP.

2. MSP Ring
-- The MSP rings supported by the equipment are four fiber MSP ring and two fiber MSP ring.

3. SNCP
-- The subnet connection protection schemes are SNCP, SNCMP and SNCTP.

4. DNI
-- The DNI network topology protection scheme effectively enhances the reliability of inter ring services. The DNI realizes the protection of services between two rings, which are networked
by the equipment from different vendors and adopt different protection schemes. The DNI provides protection in the case of fiber failure and node failure.

5. Fiber Shared Virtual Trail Protection
-- When the fiber shared virtual trail protection is used, an STM 64, STM 16, STM 4 or even STM 1 optical channel is logically divided into several lower order or higher order channels.
These channels are then connected to other links at the channel layer to form rings. In the case of the rings at the channel layer, protection schemes such as the MSP, SNCP and
non protection can be set accordingly.

6. Optical Path Shared MSP
-- In the optical path shared MSP scheme, an optical interface can be configured into multiple MSP groups, so multiple MSP rings can share the same fiber and optical interface.

7. RPR Protection
-- The RPR protection schemes are Wrapping and Steering.

8. VP Ring/VC Ring Protection
-- The protection scheme at the ATM layer is VP Ring/VC Ring.
-------------------------------------------------------------------
thats it, I will share more next, but before that I have to study more .
Thanks