Huawei CR-E4GC Manuale utente

Quidway® NetEngine 80 Core Router GE Optical Interface Board

Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.

http://www.huawei.com/products/datacomm/ 1

Quidway® NetEngine 80 Core Router

GE Optical Interface Board

Overview

The GE optical interface board of the Quidway®NetEngine 80 core router (abbreviated to NE80)

consists of the PIC Gigabit Ethernet (GE) interface and the Line Processing Unit (LPU).

The LPU implements processing and encapsulation of link layer protocols, data flow classification

and packet filtering, data forwarding and control packet processing. The PIC GE interface

implements Gigabit Ethernet MAC layer processing functions and Physical Medium Dependent

(PMD) sub-layer functions, and provides such functions as loopback and environment monitoring.

CR-E4GC

The GE optical interface board of the NE80 is mainly applied in Ethernet interconnection, reaching

a rate up to 1000 Mbps. Different GBIC modules can be chosen for different transmission

distances.

Specifications

Currently, the NE80 provides one type of Gigabit Ethernet optical interface board: CR-E4GC.

Module name Interface type Description

CR-E4GC SC 4-port Gigabit Ethernet optical interface board: Different

GBIC modules can be chosen for different transmission

distances.

Quidway® NetEngine 80 Core Router GE Optical Interface Board

Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.

http://www.huawei.com/products/datacomm/ 2

The NE80 supports the following six types of GBIC modules:

Interface rate 1000 Mbps

Maximum transmission

distance 550 m 10 km 40 km 60 km 80 km 100 km

Center wavelength 850 nm 1310 nm 1310 nm 1550 nm 1550 nm 1550 nm

Min. -9.5 dBm -9.5 dBm –4 dBm –2 dBm 0 dBm –2 dBm

Transmitting

optical power Max. -3.5 dBm -3 dBm 3 dBm 3 dBm 5 dBm 5 dBm

Receiving sensibility -17 dBm -14.4 dBm -23 dBm -23 dBm -24 dBm -29 dBm

Overload optical power -3 dBm -3 dBm -3 dBm -3 dBm -3 dBm -10 dBm

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