Vct Technology; Sfp Dom; Sflow - Zte ZXR10 5900E Product Description

ZXR10 5900E Product Description
3.2.8

VCT Technology

VCT (Virtual Cable Test) is a cable fault testing function based on hardware. It uses TDR
(Time Domain Reflector) to implement cable diagnosis. It can provide cable error state
such as open circuit, short circuit, un-matching impedance, normal cable etc. It can
provide cable fault point distance.
3.2.9

SFP DOM

DOM (Digital Optical Monitoring) is a part of optical module. The optical module
supporting DOM service can get temperature, voltage, current and the power
consumption in processing traffic. In addition, each optical module is set with some
threshold in operation (including alarm threshold and warning threshold). After initiating
DOM service, the operating status can be polled via 12C bus of the optical module, and
compare the status with the preset threshold. When the value exceeds the threshold,
syslog and SNMP trap modes can be used to send warnings.

3.2.10 SFlow

With the increasing development of network services in commercial environment, the
existing network becomes bigger and bigger. As there are more and more devices and
traffics in the network, the cost in carrying out network maintenance is higher and higher.
So how to manage network equipment efficiently and how to implement real-time traffic
monitoring and analysis have become more and more important to carriers. Currently,
vendors provide multiple network traffic monitoring technologies respectively. But most of
these traffic monitoring technologies are private or build based upon hardware. sFlow
currently is the standard traffic monitoring technology listed by IETF, it requires simpler
hardware, less resource and more universal technology, as a result, it has been
implemented by many vendors.
sFlow services are mainly composed by three parts: sFlow message sampling unit,
sFlow proxy unit, and sFlow analyzer. Usually, the sampling and proxy units of sFlow are
integrated in network device, and sFlow analyzer is built at the exterior of the system,
analyzing multiple sFlow proxy messages in the network. The entire system is basically
as shown in the following Figure:
38 ZTE Confidential Proprietary