Re: [mdnsext] mdnsext & SLP

Michael Sweet <msweet@apple.com> Fri, 21 June 2013 17:40 UTC

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From: Michael Sweet <msweet@apple.com>
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Date: Fri, 21 Jun 2013 13:40:08 -0400
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To: David Farmer <farmer@umn.edu>
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Cc: IETF mdnsext <mdnsext@ietf.org>, Garret Peirce <peirce@maine.edu>
Subject: Re: [mdnsext] mdnsext & SLP
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David,

On 2013-06-21, at 1:12 PM, David Farmer <farmer@umn.edu> wrote:
> ...
> I have experience running SLP in a large scale Campus/Enterprise environment, many of the things you say are a disadvantage are actually an advantage in such environments.

I don't recall saying any of this was a disadvantage, merely that it was an incomplete solution.

> I'm not sure compatibility or interpenetration with SLP is a good idea or not, but something similar to the DA architecture and the ability to tell unicast isolated client where the DA is with a DHCP option are concepts I think should be considered for the dnssdext solution space.


Absolutely.  My only points are these:

1. SLP needs a DA for scalability/performance
2. SLP needs DHCP to support arbitrary subnets
3. SLP doesn't solve the name/address resolution issues called out in the charter for home networks, although DNS can fill the gap for larger/managed networks.
4. The issues with deploying SLP look similar to those faced by mDNS + DNS-SD.

_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair