Huawei CR-R1UL User manual

Quidway® NetEngine 80 Core Router OC-48c/STM-16c RPR Optical Interface Boards
Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.
http://www.huawei.com/products/datacomm/ 1
Quidway® NetEngine 80 Core Router
OC-48c/STM-16c RPR Optical Interface Boards
Overview
The Quidway®NetEngine 80 core router (abbreviated to NE80) provides OC-48c/STM-16c RPR
optical interface boards to realize RPR networking.
Resilient Packet Ring (RPR) is an international standard for establishing IP ring networks, offering a
highly efficient and reliable MAN networking technology. Compared with previous ring network
technologies, it features numerous unique advantages. Integrating the 50-ms protection switchover
and high reliability of SDH network and the packet switching and high bandwidth utilization of
Ethernet, and featuring low cost, easy realization and excellent scalability, RPR is one of the major
networking solutions for IP MANs.
CR-R1UL
RPR is mainly applied in networks that require high reliability, have better QoS feature and
bandwidth guarantee, and bear multiple integrated services. For example, RPR can be applied in
backbone and access of IP MANs, and in scattered government networks, enterprise networks and
campus networks.
The RPR board is used to form a RPR network between multiple NE80 core routers or between
other NE routers. The RPR network consists of the inner ring and outer ring. Currently, the 2.5G
RPR board provided by the NE80 has only one external optical interface, so at least two RPR
optical interface boards are required for each RPR to form inner and outer ring nodes. Thus, each
NE80 must be configured with an even number of RPR boards.
The OC-48c/STM-16c RPR optical interface board uses fixed optical modules and reaches a rate
up to 2.5 Gbps. You can choose the RPR boards with different transmission distances according to
networking requirements.

Quidway® NetEngine 80 Core Router OC-48c/STM-16c RPR Optical Interface Boards
Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.
http://www.huawei.com/products/datacomm/ 2
Specifications
The NE80 provides 1-port OC-48c/STM-16c RPR optical interface boards. The board can be
further categorized into the following types based on transmission distances.
Module name Interface type Description
CR-R1UZ LC 1-port 2.5G RPR single-mode optical interface board: The
maximum transmission distance is 2 km, and the center
wavelength is 1310 nm.
CR-R1US LC
1-port 2.5G RPR single-mode optical interface board: The
maximum transmission distance is 15 km, and the center
wavelength is 1310 nm.
CR-R1UL LC
1-port 2.5G RPR single-mode optical interface board: The
maximum transmission distance is 40 km, and the center
wavelength is 1310 nm.
CR-R1UV LC
1-port 2.5G RPR single-mode optical interface board: The
maximum transmission distance is 70 km, and the center
wavelength is 1550 nm.