Do you know how the Slots DistributionHuawei on Huawei OptiX OSN 6800 Subrack

Subracks are the basic working units of Huawei OptiX OSN 6800. The subrack of the OptiX OSN 6800 has an independent power supply.

1. Indicator and interface area
2. Board area
3. Fiber cabling area
4. Fan tray assembly
5. Air filter
6. Fiber spool
7. Mounting ear

• Indicators: indicate the running status and alarm status of the subrack.
• Board area: All service boards are installed in this area. 21 slots are available.
• Fiber cabling area: Fiber jumpers from the ports on the front panel of each board are routed to the fiber cabling area before being routed on a side of the open rack. The mechanical VOA is also installed in this area.
• Fan tray assembly: Fan tray assembly contains ten fans that provide ventilation and heat dissipation for the subrack.
• Air filter: The air filter protects the subrack from dust in the air and requires periodic cleaning.
• Fiber spool: Rotable fiber spools are on two sides of the subrack. Extra fibers are coiled in the fiber spool on the open rack side before being routed to another subrack.
• Mounting ears: The mounting ears attach the subrack in the cabinet.
• Interface area: The interface area provides functional interfaces, such as management interface, inter-subrack communication interface, alarm output and cascading interface, alarm input and output interface. It is behind the subrack indicator panel.

Slot Description

The board area of the subrack has 21 slots, labeled IU1 to IU21 from left to right.

• houses service boards and supports service cross-connections.
• IU15 and IU16 are also available for the STG. IU9 IU10 is the cross-connect slots.
• Pair slots refer to a pair of slots whose resident boards' overhead can be processed by the buses on the backplanes. OptiX OSN 6800 supports pair slots.
  • At a site where OSC signals pass through, two OSC boards must be configured in paired slots.
  • When line boards or OTU boards function as regeneration boards, ESC signals need to pass through the boards. In this scenario, the two line boards or OTU boards must be configured in paired slots.
  • Paired slots among slots IU1 to IU8 and IU11 to IU16 support distributed service grooming.