DNS discovery and option 43 in DHCP which is prior

[AAES_cnrw]

We have both DNS  and Option 43  contorller discovery ways in one network but they direct to different WCL .

I just want to know which one is more aggressive to advertise the IP address of controller.

thank you in advance.

[Scott Fella]

Here is a link to the AP's selection process. Also in the link the how the AP will choose which WLC.

After the LAP completes steps 1 to 5 of the Layer 3 LWAPP WLC Discovery Algorithm, the LAP selects a WLC from the candidate WLC list and sends that WLC an LWAPP join request.

WLCs embed this important information in the LWAPP discovery response:

The controller sysName
The controller type
The controller AP capacity and its current AP load
The Master Controller flag
An AP-manager IP address

The LAP uses this information to make a controller selection, with use of these precedence rules:

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a00806c9e51.shtml#topic3

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[AAES_cnrw]

I need to know what's the procedure for LAP when looking for WLC ? which one will be the first ? DNS looking for option or DHCP option ? 

thank you

Scott Fella wrote:
Here is a link to the AP's selection process. Also in the link the how the AP will choose which WLC.

After the LAP completes steps 1 to 5 of the Layer 3 LWAPP WLC Discovery Algorithm, the LAP selects a WLC from the candidate WLC list and sends that WLC an LWAPP join request.

WLCs embed this important information in the LWAPP discovery response:

The controller sysName
The controller type
The controller AP capacity and its current AP load
The Master Controller flag
An AP-manager IP address

The LAP uses this information to make a controller selection, with use of these precedence rules:

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a00806c9e51.shtml#topic3

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[Scott Fella]

It's in the link I posted.

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[mmangat]

Hello,

Please check the following cisco doc for the procedure for LAP when looking for WLC.

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a00806c9e51.shtml