Atm Features; Figure 6-17 Steering Protection; Table 6-4 Functions Of The Four Atm Boards - Huawei OptiX OSN 7500 Technical Manual

OptiX OSN 7500
Technical Manual - System Description

Figure 6-17 Steering protection

3.
For details about spanning tree and LCAS, refer to "6.1 Ethernet".
6.3

ATM Features

This section describes the ATM features of the OptiX OSN 7500 in terms of
functionality, application, and protection.
6.3.1 Functions
The OptiX OSN 7500 provides four different ATM processing boards: ADL4, ADQ1,
IDL4 and IDQ1. The IDL4 and the IDQ1 support inverse multiplexing for ATM (IMA).
An ADL4/IDL4 board can access and process one STM-4 ATM service and an
ADQ1/IDQ1 board can access and process four STM-1 ATM services. When working
with the PL3/PD3 board, the ADL4 board or ADQ1 board can access and process E3
ATM services. The functions of the four boards are listed in Table 6-4.

Table 6-4 Functions of the four ATM boards

Function
Front panel interface
Optical interface index
Optical interface type
Fiber cut
X
Dual-ring
Node 3
2.5 Gbit/s RPR
Traffic flow
Node 4
after switching
Spanning Tree and LCAS
Board
Huawei Technologies Proprietary
Node 2
Traffic flow before
switching
Node 1
Node 6
Node 5
ADL4/IDL4
1 x STM-4
S-4.1, L-4.1
Hot swappable LC (SFP)
6-19
6 Data Features
ADQ1/IDQ1
4 x STM-1
I-1, S-1.1, L-1.1
Hot swappable LC (SFP)