Say a client gets the an single address in the response. Now what
protocol does it use? Does it just randomly try protocols seeing if
one will work? It seems like it needs to say use TFTP. Or say
something like try HTTP then TFTP or something. Just providing a
random address does not seem like it will result in any
interoperability. Particularly in the case where phones from more than
one vendor want to work on the same network with same DHCP server.
I also think it is important to mention the limitations of TFTP. The
ping time from my home across the VPN to the the tftp server my phone
reaches is around 120 ms. TFTP is a stop an wait protocol without
overlapping transactions of 512 payload bytes. So if I want to
download a 20 meg firmware image for my phone, it takes a few hours
regardless of what my bandwidth is. Note my crappy DSL connection with
the same VPN would download that same image over HTTP in well under a
minute.
Cullen <in my individual contributor role>
On Nov 25, 2008, at 10:17 AM, The IESG wrote:
The IESG has received a request from an individual submitter to
consider
the following document:
- 'VoIP Configuration Server Address Option '
<draft-raj-dhc-tftp-addr-option-04.txt> as an Informational RFC
The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to
the
ietf@xxxxxxxx mailing lists by 2008-12-23. Exceptionally,
comments may be sent to iesg@xxxxxxxx instead. In either case, please
retain the beginning of the Subject line to allow automated sorting.
The file can be obtained via
http://www.ietf.org/internet-drafts/draft-raj-dhc-tftp-addr-option-04.txt
IESG discussion can be tracked via
https://datatracker.ietf.org/public/pidtracker.cgi?command=view_id&dTag=12769&rfc_flag=0
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