Siemens WiPS-200 Series Instrukcja Użytkownika Pobierz pdf (Strona 3)

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owsandcontroladmissiononaperuserandperSSIDbasis.With

the ﬂexibility to provision services and enforce policies at the AP,

wireless trafﬁc can be bi-directionally limited to user-deﬁned thresholds,

ﬁltered, and locally switched without the need to tunnel it back to the

controller.Inbothcases,unwantedtrafcdoesnottraversecostlyWANs

or aggregating switches before being dropped at the controller. This

isachievedbytheuniqueabilitytoperformpacketinspectionatthe

AP,wheretherequestedserviceanddestinationisidentiedandthen

used to ﬁlter, switch, or rate limit accordingly. The result is optimized

responsiveness and performance for users and services. Easily adapted

to diverse customer network conﬁgurations whether they comprise single

building, local campus or routed remote ofﬁces, the Enterasys Wireless

solutions-oriented architecture simpliﬁes deployment and reduces

implementation costs.

Survivable Branch Ofﬁce

Administrators can cost-efﬁciently deliver WLAN services for users at

remote sites without the need to purchase or manage a local controller.

Combining built-in user-based policy management and captive portal

capabilities, branch users, including guests experience premium

performancewithdirectaccesstolocalresourcessuchasInternet,

printers and other specialized services. Trafﬁc ﬁltering, rate limiting,

and exception handling of unauthorized users continues even when

connection to the controller is lost.

Dynamic Radio Management (DRM)

Each Enterasys Wireless Access Point supports DRM. Although DRM is

centrally managed and conﬁgured by the controller, DRM functions as a

fully distributed system managing channels and transmit power allowing

theWLANinfrastructuretoadapttoRFinterference(802.11and

others), heavy channel utilization, and AP failures.

Flexible Client Access (FCA)

FlexibleClientAccessisanaccesstechniquethatcansignicantly

improvethethroughputfor802.11nclientsinmixeda/b/gandn

environments.FCAoperatesbyensuringequalairtimeforallclientsin

environmentswithamixof802.11nand802.11a/b/gdevices.Network

administrators can step-wise adjust this capability on a per WLAN service

basis to improve responsiveness for all users and to maximize overall

throughput across the wireless link.

Full RF Survivability

To ensure uninterrupted access, Enterasys Wireless Access Points

automatically adjust their settings to continue to optimally service clients

when adjacent APs fail or when the link back to the controller is lost.

Inaddition,EnterasysWirelessAPscanbeconguredtodynamically

redirect trafﬁc to a secondary wireless controller if the primary wireless

controller fails. When the failover mode is enabled, APs automatically

availability of the WLAN service and robustness for real-time applications

Security

Enterasys Wireless APs provide strong encryption and authentication with

the use of 802.11istandardsandcaptiveportal.

Enterasys Wireless APs can be conﬁgured as part time or full time

sensors to detect rogue APs or to detect and contain security threats with

theWirelessManagementSuite(WMS)WirelessIntrusionPrevention

System(WIPS).

Inaddition,eachAPcanbeconguredwithacerticateenablingtheAP

to authenticate to the wired network. The network is then fully protected

against attempted re-use of the Ethernet port by unplugging the AP and

connecting directly to the Ethernet cable, as a point of entry into the

corporate network.

Quality of Service (QoS)

Enterasys Wireless APs support extensive functionality to ensure the

best service for all multimedia applications. Enterasys Wireless APs use

IPDiffServ/Precedence/TOSand802.11eWMMtodifferentiateand

prioritizewirelesstrafc.Onthewiredside,IPDiffServ/Precedence/TOS,

and802.1pareusedtodifferentiateandprioritizetrafc.

For802.11trafc,EnterasysWirelessAPssupportadditionalQoS

featuresincluding802.11eTSPEC(CallAdmissionControl)andU-APSD

(automaticpowersave)toensurehighqualityandpowerefcient

services for voice, video, and data applications.

Inaddition,theoriginalpacketIPprioritizationcanbemaintainedon

both the wireless and wired networks by enabling the Adaptive QoS

mechanism. This feature allows tunneled and wireless packets to retain

theirIPprioritizationvalueend-to-end.Furthermore,EnterasysWireless

APsallowITmanagerstodenecustommappings of different types of

prioritization schemes to ensure that user trafﬁc is properly differentiated

when entering the wired network.

Bandwidth Control and Prioritized Service Delivery

Enterasys Wireless provides administrators with the means to control

bandwidthutilizationandprioritizeservicedelivery.Unique,granular

packet inspection capabilities at the AP continuously monitor and assess

user and service destinations. Based on topology, ﬁlter rules and data

rate thresholds deﬁned in the user policy, a packet may be tunneled back

to the controller, switched at the AP, or dropped. A user who violates a

ratelimitpolicyattributecould,forexample,bedirectedtoaquarantine

segment attached to local AP or further rate limited.

Enterasys RoamAbout Access Point Investment Protection

Previous investments in the Enterasys RoamAbout

4102AccessPoints

can be leveraged through software upgrades that enable Enterasys

Wireless operation.

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