Re: [Int-area] Packing in draft-touch-intarea-tunnels-00.txt
George Tsirtsis <tsirtsis@googlemail.com> Mon, 23 March 2009 21:10 UTC
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Date: Mon, 23 Mar 2009 14:11:29 -0700
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From: George Tsirtsis <tsirtsis@googlemail.com>
To: Joe Touch <touch@isi.edu>
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Subject: Re: [Int-area] Packing in draft-touch-intarea-tunnels-00.txt
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Yes Joe, this is exactly what I am looking for, thanks. I am somewhat concerned with taking something that is done over a single hop technology (GigE) and applying it blindly to the multi-hop Internet. e.g., one should think what this would do to packet fate-sharing and what it would mean for end nodes if/when the tunnel terminates on them etc. George On Mon, Mar 23, 2009 at 1:51 PM, Joe Touch <touch@isi.edu> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, George, > > George Tsirtsis wrote: >> Was just looking at draft-touch-intarea-tunnels-00.txt >> >> The section on "Packing (ala GigE bursting)" in this draft is a bit strange. >> Although this is under a section listing known "issues" with >> tunnels/fragmentation, it is not clear what the authors think about >> it. >> It is almost written as if the authors believe that tunnel packing is >> a "good thing", is that true or am I mis-interpretatiing? > > The point of the doc is to be objective. That means pros, cons, and > caveats. The doc isn't fully matured, though, and some sections have > more detail than others. This probably needs development, e.g.: > > It you're sending lots of 40-byte packets over a tunnel that can support > 500-byte packets, then you can do so more efficiently by using packing. > However, you do run the risk of introducing timing artifacts (bursts) > into the traffic that goes through the tunnel, and this assumes that > enough packets arrive at the tunnel ingress to be useful to pack - a > tunnel ingress shouldn't delay packets just to pack them. > > I.e., there are pros (efficiency), cons (timing effects), and caveats > (no additional queuing delay just to aggregate). > > Is that what you were looking for? is that reasonable? > > Joe > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (MingW32) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iEYEARECAAYFAknH9kQACgkQE5f5cImnZrsgNACfdrnFvtaMbS4sry2sU17iLGzH > 85oAoIUhN9OzKk6z644KdCmzjLEMuyf9 > =cPCM > -----END PGP SIGNATURE----- >
- [Int-area] Packing in draft-touch-intarea-tunnels… George Tsirtsis
- Re: [Int-area] Packing in draft-touch-intarea-tun… Joe Touch
- Re: [Int-area] Packing in draft-touch-intarea-tun… George Tsirtsis
- Re: [Int-area] Packing in draft-touch-intarea-tun… Joe Touch