Gregory, sorry but administrator can't force anything. sFlow will show what it see in the packet, without any treatment. May be you can use some tool to do that but I don't know one.
On Wed, Jan 14, 2009 at 5:42 PM, <greg...@is.naist.jp> wrote: > Renan, > > thank you for your diligence. > Well, I do understand how the AS path is built but, sorry for the long > sentences I made in the previous mail, I just wanted to know if sFlow had a > say in whether to represent this AS path as a set (unordered) or as a > sequence (ordered). In the latter case, it may possible for the sFlow > administrator to force the representation of this AS path. > Isn't it? > > Gregory > > ----- Original Message ----- > From: Renan M Alves <renanmal...@gmail.com> > Date: Thursday, January 15, 2009 4:29 am > Subject: Re: [sFlow] AS sets and sequences > > > Gragory, > > > > the order of ASs in a AS path is totaly determined by the routing > > protocol,commonly BGP, and represent the best path between two > > points (ASs). > > Sflow can't do anything about this, it just show what BGP decide. > > > > > > > > > > On Wed, Jan 14, 2009 at 3:29 PM, <greg...@is.naist.jp> wrote: > > > > > Hello, > > > > > > I may have missed something in the RFC, but I was not able to > > determine why > > > the destination AS path can sometimes be represented as a set > > (unordered set > > > of ASs) or sometimes as a sequence (ordered set of ASs). Is it > > bound to the > > > proximity of the destination? For example, in a case where the > > packet is > > > sampled far from its destination and there are still many ASs to > > cross, not > > > ordering the ASs in the destination AS path may save processing > > time (?). > > > Or is there a totally different reason to this distinction? > > > Moreover, is it possible to force the AS path to be either one or > > the other > > > in some sampling device implementations, especially routers? I > > can not > > > recall anywhere to configure the way the AS path is exported on > > the devices > > > I use. So I was wondering if it was automatically determined by an > > > algorithm. > > > > > > Well, my reasoning is way too long. Sorry. > > > > > > Thanks for the answer, > > > > > > Gregory.
