Huawei CX600-X1-M Series - 3.4 Data Plane

3.4 Data Plane
3.4.1 Introduction to the Data Plane
NPUs are key parts on the CX600-X2-M16 and are responsible for network processing and data
exchange between PICs and NPUs.
The procedure for data processing is as follows:
1. The IP packets sent from PICs and NPU converge at a convergence module.
2. The NP processes the IP packets.
3. The TM module performs traffic management on the IP packets.
Figure 3-11 Data plane architecture of the CX600-X2-M16
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3.4.2 Introduction to the NPU-50
NOTE
NPU-50 must not be installed in an outdoor cabinet.
The NPU-50 has a 50-Gbit/s forwarding capability in each direction, and all subcards exchange
data through the NPU-50.
You can install two NPUs on the chassis of the CX600-X2-M16. The two NPUs can work in 1
+1 or 1:1 mode. In 1+1 mode, the NPU-50 is connected to the eight PICs. In 1:1 mode, the
NPU-120-E is connected to the sixteen PICs.
The NPU-50 consists of the following planes:
l Control and management plane
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
3 CX600-X2-M16 Hardware Description
Issue 03 (2014-04-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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