To:
teemu.savolainen@nokia.com
cc:
dnsop@cafax.se
From:
Jim Reid <jim@rfc1035.com>
Date:
Thu, 13 Nov 2003 16:20:17 +0000
In-reply-to:
Your message of "Thu, 13 Nov 2003 17:48:50 +0200." <D338C3A6DFB6BE4EA06F1A7494CEBD4601B6BCF2@trebe004.europe.nokia.com>
Sender:
owner-dnsop@cafax.se
Subject:
Re: DNS discovery
>>>>> "teemu" == <teemu.savolainen@nokia.com> writes: teemu> So IP connections are opened many times more often than a teemu> GSM cellular phone registers to actual cellular network teemu> infrastructure (depending of course what user actually teemu> does..). Thus this RTT has to be waited every time such teemu> activity takes place and not only in powerup and when teemu> registering to a network. teemu> I do not know often average cellular phone user would get teemu> this RTT penalty in real life, but I think that avoiding teemu> this RTT would be a good design anyhow. I already said that avoiding unnecessary RTTs is a Good Thing. However I think you overlooked the point I was making. Presumably at the point when a phone opens a connection to some web proxy or joins a network or whatever there will be some sort of authentication and verification taking place. For instance to assure the operator that the customer is authorised to use the service. Locating a suitable DNS server could be part of that authentication dance and the RTT for the "find me a name server" request would be lost in the noise of the telco infrastructure deciding what to do about the connection request, who/what to invoice and log, etc, etc. #---------------------------------------------------------------------- # To unsubscribe, send a message to <dnsop-request@cafax.se>.