Digital China Networks Limited DCWL-7962OT ユーザーズマニュアル

DCWL-7962OT

APs have essentially resolved this problem by using intelligent

control of terminals based on airtime fairness, ensuring that a user

can always enjoy the same joyful WLAN experience in the same

location, no matter what type of the terminal the user is holding.
The intelligent control of terminals based on airtime fairness

greatly improves the performance of both the client and the entire

network. It enables all clients with high data transmission rates

to attain strikingly higher performance while low-rate clients are

almost not affected at all. The performance will be even more

obviously higher on an open wireless network. Once high-rate

clients finish data transmission, fewer clients will be transmitting

data on the wireless network. In this case, there will be less

contention and retry on the network, thereby greatly improving

overall AP performance.

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Intelligent load balancing mechanism

In general, a wireless client will select an AP according to the

signal strength of APs. When this uncontrolled access mode is

applied, however, a large number of clients could be connected

to the same AP simply because the AP provides strong signals.

As more clients are connected to an AP, the bandwidth available

to each client will be smaller, thereby greatly affecting user

experience of the clients. DCN wireless products support

diversified intelligent load balancing means:
AP load balancing based on traffic
AP load balancing based on the number of users
AP load balancing based on frequency bands
Access control based on signal strength of terminals
Call admission control (CAC) based on the number of users

to well guarantee the access performance and bandwidths of

terminals with high-priority applications
Mandatory roaming control of terminals to direct terminals to APs

with stronger signals

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Intelligent identification of terminals

DCN smart APs may be used with DCN wireless ACs and a

unified authentication platform to intelligently identify the size,

system type, and type of each terminal; and comprehensively

support mainstream smart terminal operating systems, such as

Apple iOS, Android, and Windows. They intelligently identify the

size of a terminal and adaptively present a portal authentication

page of the corresponding size and page pattern, freeing users

from multiple times of dragging to adjust the screen and enabling

users to enjoy more intelligent wireless experience. They can also

intelligently identify the system type of each terminal and present

the system type of each terminal such as Windows, MAC OS, or

Android on the unified authentication platform, exhibiting every

detail of intelligence to users. In addition, they can intelligently

identify the type of each terminal such as the mobile phone,

tablet, or PC, and implement dynamic policy control of terminals

according to different types of the terminals, making possible

more intelligent user control at a finer granularity.

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Comprehensive support for IPv4/v6 dual-stack

networks

APs may be deployed on an IPv6 network, with IPv6 tunnels

established through auto negotiation between a wireless AC and

an AP. When the wireless AC and the AP completely operate

in IPv6 mode, the wireless AC can still correctly identify IPv4

terminals and process IPv4 packets from wireless clients.

Featuring flexible adaptability to IPv4/6, DCN smart APs cater

to complex applications involved in migration from an IPv4

network to an IPv6 network. They not only provide IPv4 service to

customers on an IPv6 network, but also enable users on an IPv4

network to log in to the network through the IPv6 protocol at ease.

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Network-wide seamless roaming

DCN wireless ACs support an advanced wireless AC cluster

technology, which enables multiple ACs to synchronize online

connection information and roaming records of all users to each

other in real time. This technology implements not only L2/L3

seamless roaming inside a wireless AC but also fast roaming

across wireless ACs. As client IP address information does not

change and re-authentication is not required in the roaming

process, the continuity of real-time mobile services is well

guaranteed.

Secure and Controllable Wireless Network
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User isolation policy

DCN wireless APs support the isolation of wireless users from

one another. If this user isolation function is enabled, two wireless

clients cannot directly communicate with each other but can only

access an upstream wired network. This further guarantees the

security of wireless network applications.

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Wireless intrusion detection and intrusion defense

DCN wireless APs support wireless intrusion detection and

intrusion defense features, such as detection of unauthorized

wireless devices, intrusion detection, blacklist, and white list,

thereby greatly improving security management of an entire

wireless network.

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Wireless user management at a fine granularity

Each AP supports a maximum of 32 WLANs to implement multi-

layer multi-service management of wireless users at a fine

granularity. Each WLAN supports access control and uplink/

downlink rate limit based on MAC or IP addresses. These

WLANs may be bound to virtual local area networks (VLANs).

In addition, different authentication and accounting policies can

be implemented. This feature is practically significant in a multi-

WLAN environment.

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Secure user admission

DCN smart APs may be used with wireless ACs to provide multiple

secure access, authentication, and accounting mechanisms for

various application environments. These mechanisms include:
802.1x authentication
Captive portal authentication, including built-in portal, external

portal, and custom portal authentication modes
MAC address authentication
LDAP authentication
WAPI encryption and authentication
Wired/wireless integrated authentication and accounting

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Wireless SAVI

DCN wireless network products support a source address

validation (SAVI) technology to deal with spoofed packet attacks

that keep emerging on today's campus networks. As users' IP

addresses are obtained through an address allocation protocol,

users access the Internet using correct addresses in subsequent

applications and cannot spoof others' IP addresses, thereby

guaranteeing the reliability of source addresses. In addition, the

SAVI technology is combined with a portal technology to further

guarantee the authenticity and security of packets of all users

accessing the Internet.

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PEAP user authentication

With the popularization and application of smart terminals,

wireless terminal users require authentication mechanisms

of higher usability and convenience. Using a mechanism that

combines portal authentication and MAC address authentication,

DCN wireless network products support Protected Extensible

Authentication Protocol (PEAP) authentication to attain better

user experience. Initially a user needs to manually perform portal

authentication and later the user gets authenticated through PEAP

in automatic mode. DCN wireless network products feature high