Re: [mif] Happy Eyeballs Extension for MIF
GangChen <phdgang@gmail.com> Tue, 05 April 2011 15:17 UTC
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Date: Tue, 05 Apr 2011 23:18:45 +0800
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From: GangChen <phdgang@gmail.com>
To: teemu.savolainen@nokia.com
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Subject: Re: [mif] Happy Eyeballs Extension for MIF
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Hello Teemu, Please see reply in line. Some thoughts updates have been included according to the meeting discussion. 2011/3/27, teemu.savolainen@nokia.com <teemu.savolainen@nokia.com>: > Hi, > > This is interesting work. Couple of questions: > > Is the value of I initially zero for any destination/hostname that has not > yet been connected to? [Gang] The value of I is supposed to be zero initially in preliminary algorithm proposal. > draft-ietf-mif-dhcpv6-route-option and RFC4191 allow definition of specific > routes. In the presence of specific routes it sounds, for me at least, > somewhat odd to send connection attempts via all interfaces. What about > incrementing I for a destination address that matches a more specific route? > Hence initial connection attempt would be sent over the interface that has > matching route and other interfaces would be tried only if no reply on the > preferred one? [Gang] We could take routing information into account for computing value I. Also, I have noticed there are several preconditions impacting on value I, like interface cost, higher layer service demanding, etc. All preconditions would contribute to value I computations. I guess we need to formulate a function to reflect all criteria. Multiple rules make algorithm complicated. I'm still working on modeling the different interface behavior based on several preconditions. Any suggestion about this? > How does the value of I relate to time? (i.e. if I is -1 does the node wait > 10ms before trying corresponding less-preferred interface). [Gang] How about absolute value of I*10 milliseconds which is in line with original Happy Eyeballs proposal > Why would the DNS query be sent over all interfaces? Is it because "I" for a > destination name is initially a zero? Like in routing case, if Improved DNS > Server Selection is in play, would the "I" be nonzero for those interfaces > over which DNS suffix matching the requested name has been received on? [Gang] I think that has same situation with second comments. Best Regards Gang
- [mif] Happy Eyeballs Extension for MIF GangChen
- Re: [mif] Happy Eyeballs Extension for MIF teemu.savolainen
- Re: [mif] Happy Eyeballs Extension for MIF Scott Brim
- Re: [mif] Happy Eyeballs Extension for MIF GangChen
- Re: [mif] Happy Eyeballs Extension for MIF GangChen
- Re: [mif] Happy Eyeballs Extension for MIF pierrick.seite
- Re: [mif] Happy Eyeballs Extension for MIF Ted Lemon
- Re: [mif] Happy Eyeballs Extension for MIF pierrick.seite
- Re: [mif] Happy Eyeballs Extension for MIF Ted Lemon
- Re: [mif] Happy Eyeballs Extension for MIF Ted Lemon
- Re: [mif] Happy Eyeballs Extension for MIF Fred Baker
- Re: [mif] Happy Eyeballs Extension for MIF Ted Lemon
- Re: [mif] Happy Eyeballs Extension for MIF pierrick.seite
- Re: [mif] Happy Eyeballs Extension for MIF pierrick.seite
- Re: [mif] Happy Eyeballs Extension for MIF Marc Blanchet
- Re: [mif] Happy Eyeballs Extension for MIF pierrick.seite
- Re: [mif] Happy Eyeballs Extension for MIF Ted Lemon
- Re: [mif] Happy Eyeballs Extension for MIF Andrew Sullivan
- Re: [mif] Happy Eyeballs Extension for MIF pierrick.seite
- Re: [mif] Happy Eyeballs Extension for MIF Marc Blanchet
- Re: [mif] Happy Eyeballs Extension for MIF Hui Deng
- Re: [mif] Happy Eyeballs Extension for MIF Marc Blanchet
- Re: [mif] Happy Eyeballs Extension for MIF Hui Deng
- Re: [mif] Happy Eyeballs Extension for MIF GangChen
- Re: [mif] Happy Eyeballs Extension for MIF Zuniga, Juan Carlos
- Re: [mif] Happy Eyeballs Extension for MIF Ted Lemon
- Re: [mif] Happy Eyeballs Extension for MIF Hui Deng
- Re: [mif] Happy Eyeballs Extension for MIF Ted Lemon
- Re: [mif] Happy Eyeballs Extension for MIF Hui Deng