Planning the 1+1 &1:N Linear MSP on Huawei Optix OSN2500

Capabilities of Supporting the 1+1 Linear MSP

When planning the 1+1 linear MSP for the OptiX OSN 2500, first consider the capabilities of
supporting the 1+1 linear MSP.
In the case of Huawei OptiX OSN 2500, the capabilities of supporting the 1+1 MSP are as follows:

• The OptiX OSN 2500 supports the 1+1 MSP at the STM-64, STM-16, STM-4, and STM-1
• levels.
• An OptiX OSN 2500 system supports a maximum of 12 1+1 linear MSP groups.
• The switching and bridging mode supports the single-ended and dual-ended switchings.
• The switching revertive mode supports the revertive mode and non-revertive mode.

Planning Principles
To rationally and effectively plan the 1+1 linear MSP, the planning principles should be
followed.

Adhere to the following principles when planning the 1+1 linear MSP.

• Do not use different optical interfaces on one multichannel optical interface board to form,1+1 protection group. Otherwise, the protection function is unavailable when the board fails.
• The switching and bridging mode should be set to the single-ended switching.The switching revertive mode should be set to the non-revertive mode.
• It is recommended that you set the B2_SD as the trigger condition of the linear MSP ring protection switching.

Capabilities of Supporting the 1:N Linear MSP
When planning the 1:N linear MSP for the OptiX OSN 2500, first consider the capabilities of
supporting the 1:N linear MSP.
The OptiX OSN 2500 supports the 1:N linear MSP at the following levels:

• 1:N (1≤N≤14) linear MSP at the STM-16 level
• 1:N (1≤N≤14) linear MSP at the STM-4 level
• 1:N (1≤N≤14) linear MSP at the STM-1 level

In the case of the OptiX OSN 2500, the capabilities of supporting the 1:N linear MSP are as
follows:

• An OptiX OSN 2500 system supports a maximum of 12 1:N linear MSP groups.
• The switching and bridging mode is the dual-ended switching.
• The switching revertive mode is the revertive.

Planning Principles
Adhere to the following principles when planning the 1:N linear MSP.

• Do not use different optical/electrical interfaces on the same multichannel optical/electrical interface board to form a 1:N protection group. Otherwise, the protection function is unavailable when the board fails.
• In the 1:N protection scheme, the protection route can carry extra services, but the extra services cannot be protected.
• It is recommended that you set the WTR time of the linear MSP ring to 600s.
• It is recommended that you set the B2_SD as the trigger condition of the linear MSP ring protection switching.