Capwap Mailing List: Re: need clarification on UDP ports

[Margaret Wasserman (margaret]

Hi Puneet,

> To summarize, it seems that you are proposing that there be two UDP
> ports reserved for CAPWAP:
>
> A) CAPWAP Control Port: All discovery and capwap control messages flow
> on this UDP port. There is a new shim (control mux) header added  
> between
> the UDP Header and the following header (where the following header
> could be DTLS if encrypted or CAPWAP Hdr if non-encrypted ). The  
> control
> mux would specify if the packet is DTLS encrypted or not. I didn't  
> want
> to use the "Control Header" for the new shim as section 4 already  
> talks
> about a "Control Header".
>
> B) CAPWAP Data Port: All CAPWAP Data messages flow on this UDP  
> port. It
> is a property of the UDP tunnel whether the payload in encrypted or  
> not.
> If the tunnel is encrypted, then a DTLS header follows the UDP Header.
> If the tunnel is not encrypted, then a CAPWAP Header follows the UDP
> Header. Note that there is no "control mux" after the UDP header.
>
> Is the above interpretation correct?

Yes, this interpretation is correct.  And, I agree with you that we  
shouldn't
call the new header a "control header", as that would be ambiguous.

Thanks,
Margaret