Quidway® NetEngine 80E Core Router OC-192c/STM-64c RPR Optical Interface Board
Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.
http://www.huawei.com/products/datacomm/
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Quidway® NetEngine 80E Core Router
OC-192c/STM-64c RPR Optical Interface Board
Overview
The Quidway® NetEngine 80E core router (“NE80E” hereinafter) provides OC-192c/STM-64c RPR
optical interface boards for Resilient Packet Ring (RPR) networking. The boards can be plugged in
any service slots of the NE80E.
As an international standard used to establish IP ring networks, the RPR technology is a kind of
MAN networking technology that features high efficiency and high reliability. It has many
advantages over the previous ring network technologies. It provides 50ms protection switchover
and high reliability of the SDH network, and high bandwidth utilization of packet switching of the
Ethernet. Most importantly, it features low cost, simple implementation and good scalability. It is
currently one of the major technologies for IP MAN construction.
The RPR technology is mainly applied in the networks with high reliability requirements, good QoS
feature, bandwidth guarantee and bearer of multiple integrated service types. For example, it may
be applied in the backbone and access networks of IP MANs and in the dispersed government,
enterprise and campus networks.
CR52-RPR/STM64-XFP
The RPR boards are used in multiple NE80E routers or other NE routers to form a RPR ring
network. The RPR ring network is composed of an internal ring and an external ring. Currently, the
10G RPR board provided by the NE80E has only one external optical interface. At least two RPR
optical interface boards must be configured for each RPR ring: One board serves as the external
ring node, while the other board serves as the internal ring node. Therefore, RPR boards of an
even quantity must be configured for each NE80E router.
Quidway® NetEngine 80E Core Router OC-192c/STM-64c RPR Optical Interface Board
Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.
http://www.huawei.com/products/datacomm/
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Hot pluggable XFP optical modules are adopted for the OC-192c/STM-64c RPR optical interface
boards. Optical modules supporting different transmission distance s may be selected depending on
the networking requirements.
Specifications
Currently, the NE80E provides one type of OC-192c/STM-64c RPR optical interface board, whose
specifications are listed in the following table:
Module name Interface Description
CR52-RPR/STM64-XFP LC
1-port OC192/STM64 RPR optical interface board,
which may have different XFP optical modules
depending on the transmission distance
Currently the NE80E provides the following three types of 10G RPR XFP optical modules:
Interface rate 10Gbps
Transmission distance (km) 10 40 80
Center wavelength (nm) 1310 1550 1550
Min. -6.0 -1.0 0.0
Transmitting optical
power (dBm)
Max. -1.0 2.0 4.0
Receiving sensitivity (dBm) -11.0 -15.0 -24.0
Overload optical power (dBm) 0.5 -1.0 -7.0
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