how LAP work and depoly?

Unanswered Question
Apr 15th, 2008
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Hi, everyone


I have some question about LAP's depoly and configuration.


1). How are LAP connected to switch? On switch port, according to CCO, it can be configurated with static vlan port or trunk port, but trunk must be with an untagged native vlan. what is meaning of trunk must be with an untagged native vlan? And how to define the native vlan id?


2). With WLC's operation, is WLAN client's all data communication encrypted with LWAPP, or just the communication between LAP and WLC are in GRE of LWAPP?



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Istvan_Rabai Tue, 04/15/2008 - 19:26
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Hi Tao,


1).

The trunk may be configured like this (just an example):


interface fastethernet1/0

switchport

switchport trunk encapsulation dot1q

switchport trunk native vlan x (x is the vlan number you want to use for untagged traffic for the LAP)

switchport trunk allowed vlan x

switchport mode trunk


The meaning of untagged native vlan is that the frame is a normal ethernet frame.

On 802.1q trunks the vlan information is propagated using 4-byte tags inserted into the normal ethernet frames.


For the native vlan no tag information is inserted, so the frame remains a normal ethernet frame.



2).

All data is flowing in the LWAPP tunnel between the WLC and the LAP. However, in the LWAPP tunnel client data is not encryped. Management traffic between the WLC and LAP is encrypted.


Cheers:

Istvan

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