Signal Flow On The Data Plane - Huawei CX600-8 Hardware Description

HUAWEI CX600-8/16/X3/X8/X16 Metro Service Platform
Hardware Description

2.3 Signal Flow on the Data Plane

The data plane processes and forwards data packets at a high speed. The signal flow in the data
plane is primarily service data signals.
Signals on the data plane flow through a physical link, an uplink board, an SFU, a downlink
board, and another physical link.
Figure 2-3
Figure 2-3 Processing and forwarding of a signal flow on the data plane
The processing of an incoming signal flow is as follows:
1. An uplink physical interface card (PIC) provides an inbound interface for a signal flow.
Optical and electrical signals transmitted along a physical link enter the uplink PIC. The
PIC obtains the physical layer clock frequency and performs data layer link protocol
negotiation. Then the PIC encapsulates packets into Ethernet frames and sends the frames
to the uplink NP.
Issue 03 (2013-11-30)
illustrates the processing and forwarding of a signal flow on the data plane.
Packets
Uplink board
Frames
Uplink
PIC
Downlink board
Frames
Downlink
PIC
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2 Product Signal Flow Overview
MPU
Host packets
(local attack defense)
Uplink NP
Packets
Downlink NP
Packets
PIC: physical interface control
NP: network processor
TM: traffic manager
FIC: fabric interface controller
Uplink TM
Uplink FIC
Packets
Downlink TM
Downlink FIC
Packets
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Acronyms
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