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1.1 Design Principle
The lightweight manufacturing enterprise's IT project system design complies with the principle
of unified planning and standards, providing great support for rapid network information
transmission and construction of various application systems.
Network design follows the overall roadmap of high performance, standard openness,
manageability, security, flexibility, and scalability, compatibility, and cost-effectiveness to
provide high-bandwidth, highly reliable, and wired and wireless integrated infrastructure
network.
Data center design involves the enterprise's service volumes and actual equipment room space,
It is recommended to use the flexible and easy-to-deploy MicroDC solution, which deploys
firewalls in data centers and controls users' access to R&D and non-R&D services based on user
role. In addition, devices in two equipment rooms work in active/standby mode.
Communication system design fully uses internal network resources. Voice, video, and data
media information services are transmitted simultaneously to lower the enterprise's investment
costs. VoIP communication is implemented through IP private networks to reduce
communication costs. Multiple communication modes such as telephone, conference, and
Instant Messaging (IM) are integrated to improve employees' work efficiency. The service
management system interface is user-friendly and feature high ease of use, reducing the
enterprise's maintenance costs and improves employees' work efficiency.
1.2 Design Roadmap
1.
Put forth the all-member authentication solution that allows a
certain employee to access core assets through a certain network to
meet information security requirements in high-density office areas.
Specific ICT requirements for information security are as follows:
(1) Access to core R&D assets through dedicated networks
Part of the internal enterprise network must be used as R&D network
that is isolated from other networks to allow employees access core
R&D assets in the specified areas (for example, R&D area) inside the
campus.
(2) Only specified personnel can access core R&D assets
Only R&D personnel and terminals can access the R&D network and
can access the core R&D assets within the range of rights.
(3) R&D personnel cannot access wireless networks.
Wireless network coverage is unstable and has a low security level.
As a result, wireless networks only work as a supplementation for
non-R&D networks. To prevent R&D terminals (including core R&D
assets) from accessing non-R&D networks through wireless signals,
identity authentication must be performed for wireless access. R&D
users and R&D terminals must be prohibited from access wireless
networks.
2.
Put forth a highly scalable and reliable data center solution to satisfy
the customer's data center requirements.
Specific ICT requirements for a highly scalable and reliable data
center are as follows:
(1) Use the MicroDC3000H integrated data center. The customer has
two 9m² equipment rooms. The data center using traditional
architecture has devices dispersedly distributed. The space is too
small. Device installation, use, and maintenance are inconvenient.
Subsequent expansion is also a tricky problem. Huawei
MicroDC3000H is a micro data center that integrates power supply
and distribution devices, chassis, heat dissipation, network devices,
servers, security, cloud operating system, and integrated
management software. Dimensions (W x D x H) of the chassis are
42 U (2000 mm × 600 mm × 1200 mm). The chassis covers a land
area of only 0.72 m². As a result, even the 9 m² equipment room is
large enough.
(2) Key nodes work in redundancy backup mode. Core service servers,
switches, and storage devices use dual nodes and dual links. Core
services are deployed in cluster mode. Data is copied at two storage
devices simultaneously and is backed up to physical tape libraries
through the IP periodically to ensure high data security and
reliability.
(3) Use server virtualization and FC-SAN to ensure high scalability.
Server virtualization can allocate computing resources based on
user demands. FC-SAN ensures smooth capacity expansion of
storage devices.
3.
Put forth a mobile UC solution to satisfy the customer's
requirements for cost-effective and mobile UC.
Specific ICT requirements for cost-effective and mobile UC are as
follows:
(1) Voice over WLAN (VoWLAN)
Huawei eSpace client is installed on mobile terminals, and wireless
networks are used to transmit services to implement clear and smooth
IP voice communication between internal employees inside the
campus and employees outside the campus. This supplements carrier
network signals inside the campus.
(2) One number for one employee
Enterprise numbers that use wireless networks can be bound to
mobile phone numbers. Each employee has only one enterprise
number.
If one fails to call a number of an employee who works mobile office
mode inside the campus due to mobile phone signal problems, the
call will be automatically transferred to the bound number on the
wireless network to ensure the corresponding employee can be
contacted in a timely manner.
(3) Adapt to growth of the number of employees
The current number of employees in only 30, but the future number
will increase to 600 to 700 or even more. Therefore, private branch
exchanges (PBXs) must have high scalability to adapt to the growth
of the number of employees.
(4) Guarantee the quality of wireless network services
Deploy WLAN APs to enhance poor wireless network signals in
certain areas, especially closed areas without wireless signals. The
signal strength must be greater than -75 dBm. Electromagnetic
compatibility (EMC) in production areas such as the production zone
is strong, so the signal-to-noise ratio (SNR) must be greater than 10
dB.
APs are deployed every 20 m in the office area and every 50 m in the
outdoor commissioning area. AP roaming is frequent during a mobile
phone call. To ensure the phone call quality, AP roaming switchover
delay must be less than 200 ms.
A maximum of 20 users access to one AP in the office area. In
conference rooms and training rooms with a high density of users,
access of too many users results in lowered service quality of each
user (the voice service will be affected if the wireless network
bandwidth is lower than 64 kbit/s). Preferential AP access policies
must be configured to solve this problem.
To meet the customer's ICT requirements, the mobile UC solution
will be designed in details from the aspects of voice communication,
One Number Link You (ONLY), wireless network, and logical
networking in chapter 8.
4.
Put forth an IP-based infrastructure network solution that adapts to
service changes and features functional equivalence based on the
preceding IT system construction requirements.
Transmitting the lightweight manufacturing enterprise's R&D design,
production and manufacturing, administration, and campus management
services, the infrastructure network is the foundation of the entire
enterprise's operations. Specific ICT requirements for the
infrastructure network are as follows:
(1) Network isolation: Build a campus backbone network. The
enterprise's R&D design system, production and manufacturing
system, administration system, and campus management system can
assess the network in a unified manner. Each service system is
isolated from another service system and can access another service
system through the DMZ. R&D personnel can access the R&D
design system and the administration system. Production personnel
can access the production and manufacturing system as well as the
administration system. Administrators can access only the
administration system. Campus management personnel can access
the administration system and the campus management system.
Different personnel cannot access each other but only communicate
with each other using email and UC systems.
(2) R&D and production personnel can access the R&D design system,
production and manufacturing system through wired networks that
transmit the enterprise's operation data including R&D 3D design
drawing (common files: 10 to 100 MB; advanced rendering files: >
200 MB), production plan, procurement, logistics, purchase order
(PO), and goods demanding order. These data must be preferentially
transmitted by the core network. Based on the customer's
expectation, bandwidth for uploading and downloading 3D graphic
files (> 200 MB) must be higher than 1000 Mbit/s to reduce
transmission delay and prevent network congestion. 50% of the
R&D design personnel must be able to perform operations
concurrently. According to the existing number of access switch
ports, upstream bandwidth must be higher than 24,000 Mbit/s, that
is, 48 (number of access switch ports) x 50% x 1000 Mbit/s (access
bandwidth). Therefore, two 10 Gbit/s upstream links are used to
build a backbone network.
(3) Network SLA: Employees can access the administration system
through wired and wireless networks that transmit data, voice, video,
and multimedia services. The customer plans to deploy advanced
video conference systems in conference rooms in the R&D building
and offices of three executives to conduct video conferences with
other institutes across the globe. The customer requires that the
video conference system provide an immersive experience and clear
and smooth images. Based on the one-channel Telepresence HD
video format (1080p/60 fps), bandwidth must meet the requirement
of 8 Mbit/s in optimal situations. Quality of service (QoS) must
meet Type-A standards: delay ≤ 100 ms, jitter ≤ 10 ms, packet loss
ratio ≤ 0.5%. The customer requires concurrent use of all video
conference systems. The customer also requires that, on the premise
of not changing the network architecture, the video conference
system process concurrent service traffic of 700 users. In addition,
the customer may introduce video services of a higher definition,
requiring that the network should not be replaced within 3 to 5
years.
(4) WLAN: The customer urgently needs a stable, clear, and
cost-effective mobile communication system that satisfies the voice
communication requirements inside and outside the campus.
Therefore, WLAN coverage must be implemented. The customer
requires full coverage of the campus and ubiquitous and rapid
access to the WLAN. The VoIP must be clear and smooth, and users
must not be aware of the cross-area VoIP experience. In addition,
the customer requires mobile office services inside the campus be
implemented. Based on bandwidth requirements of VoIP and most
mobile office services, the lowest WLAN bandwidth for a single
user should be 2 Mbit/s, and the inter-AP roaming delay should be
approximately 100 ms.
1.3 Overall Solution Design
Figure 1-1 Solution architecture
High-density
office
Non-R&D PC
Non-R&D
mobile terminal
R&D PC
Executive's
office
R&D PC
Non-R&D zone
R&D PC
R&D zone
Internet
WAN
Enterprise
Intranet
Room1
Server Storage
Power
Air
Switch
conditioningdistribution
cabinet
Distributed Deployment cabinet
Room N
Server Storage
Switch
Power
Air
conditioningdistribution
cabinet
Distributed Deployment cabinet
Outdoor commissioning
area/production area
Multiple dispersedly
distributed equipment rooms
The lightweight manufacturing enterprise IT solution consists of infrastructure network solution,
information security solution, data center solution, and mobile UC solution. Each system
connects to the infrastructure network.
Infrastructure network solution: Infrastructure network is the transmission network of the entire
IT system of the enterprise. Reliability, openness, security, scalability, and cost-effectiveness must
be ensured to provide high-bandwidth, high-reliability, and wired and wireless infrastructure
network.
Information security solution: This solution solves information security problems in high-density
office areas. Security, advancement, and cost-effectiveness must be ensured. The R&D network
must be isolated from the non-R&D network. In addition, high work efficiency must be ensured.
Data center solution: The data center bears all application systems of the entire IT system and
data storage and backup. Security, scalability, and openness must be ensured to adapt to the
enterprise's continuous service growth.
Mobile UC solution: This solution solves the mobile communication problems and enterprise
phone call cost problems inside the campus. Advancement, reliability, and ease of use, and
cost-effectiveness must be ensured to reduce enterprise phone call cost and improve work
efficiency.