Cisco AP's with Option 43

[Glenn Satchell]

Hi Austin

Yes, The Vendor Encapsulated Options are always dhcp option 43. They
are encoded as a set of sub-options.

See man dhcp-options and scroll down to the section titled VENDOR
ENCAPSULATED OPTIONS. You can use the Vendor Option Space as a way to
simplify encoding sub options.

regards,
-glenn

>From: "Frank Bulk" <frnkblk at iname.com>
>To: <dhcp-users at lists.isc.org>
>
>If this is TLV, then the '04' is the length of the text -- 4 characters,
>namely 10.1.3.2.
>
>Frank
>
>-----Original Message-----
>From: dhcp-users-bounces at lists.isc.org
>[mailto:dhcp-users-bounces at lists.isc.org] On Behalf Of MONTFORD, AUSTIN
>Sent: Monday, May 18, 2009 8:47 AM
>To: dhcp-users at lists.isc.org
>Subject: RE: Cisco AP's with Option 43
>
>Thanks Randy and Alan, that did it.
>
>For the F1:04:0A:01:03:02 string I was able to find how the code 241 is
>F1 in hex and the server adds the 04 and converts ip to hex so I
>understand that.  I still have one more question though.  Are the vendor
>encapsulated options always 43?
>
>Also I submitted a request on the cisco site for them to update the
>webpage for isc dhcp.  I imagine someone else has asked them to do this
>before, but it's worth a try.
>
>Thanks again,
>Austin
>
>
>Date: Fri, 15 May 2009 14:24:00 -0400
>From: Randall C Grimshaw <rgrimsha at syr.edu>
>Subject: RE: Cisco AP's with Option 43
>To: "dhcp-users at lists.isc.org" <dhcp-users at lists.isc.org>
>Message-ID:
>	
><D1ED659D5D76664389FB55EE3E3EE506204FC8C3 at suex07-mbx-01.ad.syr.edu>
>Content-Type: text/plain; charset="us-ascii"
>
>We do not make subnet distinctions as you are attempting, my config
>(sans actual address) is below. You might try placing the subclass in
>subnet definitions leaving the class outside.
>
>option space LWAPP;
>option LWAPP.controller code 241 = ip-address;
>class "LWAPP" {
>  match option vendor-class-identifier;
>}
>
>subclass "LWAPP" "Cisco AP c1130"
>{
>  vendor-option-space LWAPP;
>  option LWAPP.controller 10.20.30.40;
>}
>subclass "LWAPP" "Cisco AP c1200"
>{
>  vendor-option-space LWAPP;
>  option LWAPP.controller 10.20.30.40;
>}
>subclass "LWAPP" "Cisco AP c1240"
>{
>  vendor-option-space LWAPP;
>  option LWAPP.controller 10.20.30.40;
>}
>subclass "LWAPP" "Cisco AP c1241"
>{
>  vendor-option-space LWAPP;
>  option LWAPP.controller 10.20.30.40;
>}
>subclass "LWAPP" "Cisco AP c1140"
>{
>  vendor-option-space LWAPP;
>  option LWAPP.controller 10.20.30.40;
>}
>subclass "LWAPP" "ArubaAP"
>{
>  vendor-option-space LWAPP;
>  option LWAPP.controller 10.20.30.40;
>}
>
>Randy
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