ADTRAN BlueSecure Controller Bedienungsanleitung PDF herunterladen (Seite 3)

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Today’s enterprise communicates wirelessly. Users now carry multiple devices that need to connect to the enterprise Wi-Fi network

from any point in the building and across the campus. These devices are mobile and are accessing applications that demand higher

bandwidth. Wireless connectivity in the enterprise has moved from the access of convenience to the access of choice. Traditional

enterprise wireless networks were designed before the explosion of Wi-Fi enabled devices and are now straining under the demand to

support more devices, more access points, wider mobility, and greater bandwidth. A more scalable, cost-effective solution has emerged

that leverages the power of virtualisation to solve the scale challenges of the enterprise wireless network.

Next Generation Wireless Solution

Bluesocket vWLAN

Network Virtualisation

One of the most signiﬁcant developments

in enterprise computing is virtualisation.

Virtualisation optimises the computing power

of an enterprise allowing for cost-effective scaling

of critical applications. Single purpose servers that

are tied to only one application or operating system

sub-optimise computing resources, and are a relic of

a past era in computing. Yet this outdated approach

is exactly the design of most conventional WLANs.

The answer from most WLAN companies was to build

bigger and bigger controllers. And with the advent

of higher data speeds and more users, the burden of

the controller only becomes greater. ADTRAN took

a different route, unshackling the wireless network

from the limitations of an expensive physical control-

ler. Rather than building a bigger, more expensive

hardware controller, ADTRAN merged the power of

virtualisation with the wireless network—creating

the next-generation enterprise wireless solution—

Bluesocket virtual Wireless LAN (vWLAN).

In conventional controller based networks,

scale comes at a high price both in terms of OPEX

and CAPEX because a single-purpose server is

required. This is not the case with vWLAN. With

vWLAN, the controller is software on a hypervisor.

The cost of this virtual controller software is zero.

Security

Virtualisation not only unlocks cost effective

scalability but also enhances the security

of enterprise wireless networks. Traditional

controller-based networks have two security

vulnerabilities. First, unwanted trafﬁc actually

enters the LAN through the thin, unintelligent

access point. Only after the trafﬁc reaches the

controller is unwanted trafﬁc discarded. Why bring

unwanted and potentially harmful trafﬁc onto the

network? With conventional WLAN architecture,

there is no other choice, but vWLAN provides a

more secure solution. vWLAN uses intelligent

access points that operate a stateful ﬁrewall.

Unwanted trafﬁc is turned away at the access

point before it enters the network and becomes

a security problem.

The Bluesocket vWLAN solution eliminates

scaling constraints imposed on the enterprise

wireless network by eliminating the hardware

controller, and virtualising the control and man-

agement of the software to run on a hypervisor

(VMware). This fundamental shift brings

extraordinary beneﬁts.

Scalability

In conventional controller-based networks, scale is

tied to a single purpose device which is the hardware

controller. Adding more users and more access points

causes the enterprise to buy a bigger controller or add

additional controllers. The introduction of 802.11n,

which increases bandwidth demand three- to ﬁve-

fold, also drives the need to buy larger controllers.

vWLAN breaks this constant upgrade cycle. Most

large hardware controllers support approximately

150 Access Points (APs) and 4,000 users. A single

software instance of vWLAN supports 1,500 APs

and 48,000 users.

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