Quidway® NetEngine 80 Core Router Switching Network Board
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Quidway® NetEngine 80 Core Router
Switching Network Board
Overview
The Switching Network Board (NETB) of the Quidway
®
NetEngine 80 core router (abbreviated to
NE80) not only realizes fast switching of data packets of fixed length on ports, but also provides
system level-3 synchronous clock.
The NE80 has 20 slots, of which two are for NETBs. One or two NETBs are required for each NE80.
Two NETBs are recommended to implement redundancy backup to improve the reliability of the
system.
CR-NETB
The NETB realizes switching network functions.
z
Adopt the switching mode of dynamic output buffer sharing.
z
Realize non-blocking and self-routing data switching.
z
Provide 16 input and output ports, achieving a total capacity of 128 Gbps.
z
Have hardware flow control and back-pressure mechanism.
z
Provide a temperature sensor for ambient temperature detection, collection, reporting and
alarming of the network board.
The NETB of the NE80 adopts a Virtual Output Queuing (VOQ) design to eliminate head of line
(HOL) blocking: setting output queues on the Line Processing Units(LPU) uplink to implement
shared buffer, and deploying a greater Buffer on the LPU downlink to receive data from the
switching network.
The NETB also provides level-3 clock.
