D-Link DWC-1000 User Manual - Page 279

AP Failure Status Timeout, MAC Authentication Mode, Detected Clients Status Timeout, Tunnel IP MTU

Page 279 highlights

Wireless Controller User Manual AP Fai l ure S tatus Ti meout: Th is v alu e d et ermin es h o w lo n g t o keep an en t ry in t h e A P A u t h enticatio n Failu re St at us lis t . Each en t ry in t h e s t at us lis t s hows an ag e, an d wh en t h e ag e reaches t h e v alue y ou co nfig ure in t h e t imeo u t field , t h e en t ry is d e le t e d . MAC Authenti cati on Mode : Select t h e g lo b al act io n t o t ake o n wireles s clien t s in the white-lis t: Select this option to s pecify that any wireles s clients with MAC ad d res ses t h at are s p ecified in t h e Kn o wn Clien t d at ab as e, an d are n o t exp licit ly denied access, are granted access. If the MA C addres s is not in t he databas e then the acces s to the client is denied. Detected Cl i ents S tatus Ti meout : Th is v alu e d et ermin es h o w lo n g t o keep an entry in t h e Det ect ed Clien t St at u s lis t . Each en t ry in t h e s t at u s lis t s h o ws an ag e, an d wh en t h e ag e reach es t h e v alu e y o u co n fig u re in t h e t imeo u t field , t h e en t ry is d e le t e d . Tunnel IP MTU S i ze : Select t h e maximu m s ize o f an IP p acket h an d led b y t h e n et wo rk. Th e M TU is en fo rced o n ly o n t u n n eled VA Ps . W hen IP packets are tunneled between the APs and the Unified W ireles s controll er, t h e p acket s ize is in creas ed b y 20 b y t es d u rin g t ran s it . Th is mean s t h at clien t s co n fig u red fo r 1500 b y t e IP M TU s ize may exceed t h e maximu m M TU s ize o f exis t in g n et wo rk in fras t ructure wh ich is s et u p t o co n t ro ller an d ro u t e 1518 (1522 - t ag g ed ) b yt e fra mes . If y o u in crease t h e t u nn el IP M TU s ize, y o u mu s t als o in crease the phys ical MTU of the ports on which the traffic flows . Note: f any of the following conditions are true, you do not need to increas e the tunnel IP MTU s ize: The wireles s network does not use L3 t u n n elin g . Th e t u n n elin g mo d e is u s ed o n ly fo r v o ice t raffic, wh ich t y p ically h as s mall p acket s .Th e t u nn elin g mo d e is u s ed o n ly fo r TCP b as ed p ro t o co ls , s u ch as HTTP. Th is is b ecau s e t h e A P au t o mat ically red u ces t h e maximu m s eg men t s ize fo r all TCP connections to fit within the tunnel. Clus ter Priority: Specify the priority of this controller for the Clus ter Controller elect io n . Th e co n t ro ller wit h h ig h es t p rio rit y in a clu s t er b eco mes t h e Clu s t er Co n t ro ller. If t h e p rio rit y is t h e s ame fo r all co n t ro llers , t h en t h e co n t ro ller wit h lo wes t IP ad d res s b eco mes t h e Clu s t er Co n t ro ller. A p rio rit y o f 0 mean s t h at t h e co n t ro ller can n o t b eco me t h e Clu s t er Co n t ro ller. Th e h ig h es t p o s s ib le p rio rit y is 255. AP Cl i ent QoS : En ab le o r d is ab le t h e clien t Qo S feat u re. If A P Clien t Qo S is d is ab led , t h e Clien t Qo S co n fig u ratio n remain s in p lace, b u t an y A CLs o r DiffServ policies applied to wireles s traffic are not enforced. 277

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Wireless Controller
User Manual
277
AP Failure Status Timeout
: This value determines how long to keep an entry in
the AP Authentication Failure Status list. Each entry in the status list shows an age,
and when the age reaches the value you configure in the timeout field, the entry is
deleted.
MAC Authentication Mode
: Select the global action to take on wireless clients in
the white-list: Select this option to specify that any wireless clients with MAC
addresses that are specified in the Known Client database, and are not explicitly
denied access, are granted access. If the MAC address is not in the database then
the access to the client is denied.
Detected Clients Status Timeout
: This value determines how long to keep an entry
in the Detected Client Status list. Each entry in the status list shows an age, and
when the age reaches the value you configure in the timeout field, the entry is
deleted.
Tunnel IP MTU Size
: Select the maximum size of an IP packet handled by the
network.
The
MTU
is
enforced
only
on
tunneled
VAPs.
When IP packets are tunneled between the APs and the Unified Wireless controller,
the packet size is increased by 20 bytes during transit. This means that clients
configured for 1500 byte IP MTU size may exceed the maximum MTU size of
existing network infrastructure which is set up to controller and route 1518 (1522-
tagged) byte frames. If you increase the tunnel IP MTU size, you must also increase
the physical MTU of the ports on which the traffic flows. Note: f any of the
following conditions are true, you do not need to increase the tunnel IP MTU size:
The
wireless
network
does
not
use
L3
tunneling.
The tunneling mode is used only for voice traffic, which typically has small
packets.The tunneling mode is used only for TCP based protocols, such as HTTP.
This is because the AP automatically reduces the maximum segment size for all
TCP connections to fit within the tunnel.
Cluster Priority
: Specify the priority of this controller for the Cluster Controller
election. The controller with highest priority in a cluster becomes the Cluster
Controller. If the priority is the same for all controllers, then the controller with
lowest IP address becomes the Cluster Controller. A priority of 0 means that the
controller cannot become the Cluster Controller. The highest possible priority is
255.
AP Client QoS
: Enable or disable the client QoS feature. If AP Client QoS is
disabled, the Client QoS configuration remains in place, but any ACLs or DiffServ
policies
applied
to
wireless
traffic
are
not
enforced.