[e2e] Expected latency for a single hop

Craig Partridge craig at aland.bbn.com
Thu Aug 4 07:09:22 PDT 2005

Is l a physical link, an IPsec or IP-in-IP tunnel, or ...?

Note that if it is a tunnel, the answer is that the expectation and
variance of latency is potentially the same as any random multi-hop
Internet path....


In message <42F20F14.3000007 at web.de>, Detlef Bosau writes:

>I posted this in another context yesterday, but perhaps, I should 
>isolate the problem to state it more clearly.
>Consider an arbitrary packet-switching network.
>Consider two adjacent nodes n1, n2 with link l in between
>                l
>Consider a packet traveling the network, it´s path shall contain n1 and 
>n2 subsequently.
>Now, let
>  t1: packet´s arrival time on r1.
>  t2: packet´s arrival time on r2.
>Can we forecast expectaition and variance (if only for the _near_ 
>future!) for the "one hop latency" t2 - t1 ?
>I explicitely focus on a "best effort" context.
>For link l I assume, that expectation and variance of the transport 
>latency exist.
>Is there any work in this direction?
>Detlef Bosau
>Galileistrasse 30
>70565 Stuttgart
>Mail: detlef.bosau at web.de
>Web: http://www.detlef-bosau.de
>Mobile: +49 172 681 9937

More information about the end2end-interest mailing list