Huawei CR-E4GC User manual

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