HUAWEI TECHNOLOGIES CO., LTD.

One Net GreenCampus Network Solution

Background

According to Kyoto Protocol and Copenhagen Accord, countries all

around the world must aim to curb their high energy consumption

and CO2 emissions. Countries have carefully considered their

environmental protection plans and created governmental policies.

Additionally, many industries now have their own environment

protection rules and protocols. Energy saving and emission

reduction is the obligation of all modern enterprises.

According to industrial statistics, the power consumption of IP and

IT devices is 12% of the total power consumption of an enterprise.

Therefore, reducing energy consumption of these devices helps an

enterprise reduce the Total Cost of Ownership (TCO).

According to the statistics provided by Global e-Sustainability

Initiative (GeSI), in 2020, the CO2 emissions reduced by Information

and communications technology (ICT) will be five times of the CO2

emissions produced by ICT itself. Green communication is a common

objective for people worldwide to unite behind.

Huawei One Net Green Campus Solution

Reducing energy consumption of a single device cannot reduce

the total energy consumption of a campus network; therefore,

Huawei provides an end-to-end energy saving solution:

The network structure is simple and allows for efficient data �

forwarding. Redundant devices and links bring unnecessary

power consumption.

All devices support smart energy saving, without affecting �

services.

Power consumption of IT devices is managed intelligently. �

As an industry-leading solution provider, Huawei has created

the One Net green campus network solution to reduce energy

consumption for enterprises.

Efficient and Simple Network Structure

Traditional campus networks use Layer 2 technologies such as

VLAN to isolate services and users. However, after the network

scale increases, VLANs may not meet service requirements

because the total number of VLANs is limited. In this case, more

devices and links must be added to the network to physically

isolate services and users. These added devices increase a

network's energy consumption and may even create the need

for larger equipment rooms.

Huawei One Net solution uses the vertical and horizontal

virtualization technologies. The vertical virtualization technology,

Figure 1 Vertical Virtualization

Egress

Core

Aggregation

Access

Virtual network 1

Virtual network 2

Virtual network N

Service logicalisolationServices of different rightsare isolated and shared.

Access controlAccess users are verified.

Resource isolationA user only accessesthe specified resources.

A physicalnetwork is divided

into logicalnetworks for

network resourceshare andisolation

as shown in Figure 1, integrates Layer 2 and Layer 3 technologies and uses large forwarding tables to divide a physical network into

multiple logical networks, thus isolating services and users.

By utilizing the cluster and stack technologies and horizontal virtualization technology, as shown in Figure 2, device performance and

link efficiency is significantly improved without adding devices.

Smart Energy Saving

Large and medium-scale campus networks require huge power

and energy. Legacy devices cannot adjust power according

to network traffic. Regardless of whether their workloads are

heavy or light, they consume the same energy. A lot of energy is

wasted and more cooling devices are required in the equipment

room. Smart emission reduction will be a key performance

indicator of all network devices, and Huawei already has the

ability to support this performance indicator.

Huawei One Net green campus solution uses industry-leading smart

energy saving technologies to reduce devices' power consumption,

without compromising the customers' service experience.

The smart energy saving technologies:

Reduce power consumption of the heat dissipation system �

by 63% and noise by up to 10 db.

Figure 2 Horizontal Virtualization

CSS

LAG

CSS/iStack

iStack

Dept. A Other zone Dept. A Dept. BDept. B Other zone

Egress

Core

Aggregation

Access

Use patented power supply modules and monitoring modules �

to increase the power conversion efficiency by 5% to 10%.

Use Energy Efficient Ethernet (EEE) technology to improve �

the port energy efficiency ratio by 30%.

Use innovative traffic volume-based energy saving �

technology to reduce energy consumption by 8% without

causing packet loss.

Power Management for IT Devices

IT devices consume a lot of energy on campus networks. Some IT

devices such as IP phones and APs do not need to operate after

work hours. Huawei PoE provides intelligent controls for when

IT devices are powered. Devices can be set to only be powered

during specified times, reducing total power consumption.

Benefits to Customers

Huawei One Net green campus solution uses innovative and

industry-leading technologies to help enterprises:

Take the lead in complying with industry wide energy �

saving standards, thereby enhancing their reputation

concerning environmental protection.

Lower their TCO by reducing power consumption of IP �

and IT devices.

Reduce the manpower they need. �

Why Huawei?

"Green communication, green Huawei, green world" is

the vision of Huawei. In addition to providing the industry-

leading device energy saving capability, Huawei is actively

promoting the technology that manages the energy of

enterprises' IT devices.

As a leading end-to-end solution provider, Huawei has the

ability to accelerate the innovation in green communications

and help customers reduce their energy consumption.

Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved.

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without limitation, statements regarding the future financial and operating results,

future product portfolio, new technology, etc. There are a number of factors

that could cause actual results and developments to differ materially from those

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Version No.: M3-142160203-20111207-C-2.0

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