Re: Traceroute versus other performance measurement

[grisha]

FYI - there is anether program, available with source (unlike pathchar)
called pchar:

http://www.employees.org/~bmah/Software/pchar/

Grisha

Wed, 29 Nov 2000, Ping Pan wrote:

> 
> Have you tried pathchar? It's pretty much the same as traceroute, but it
> is to estimate e2e bandwidth. When it first came out, I tried it. It
> didn't give good results. I heard it had been enhanced since. Go to
> ftp://ftp.ee.lbl.gov/pathchar/
> 
> - Ping
> 
> On Wed, 29 Nov 2000, Paul Bradford wrote:
> 
> >
> > I have been reading NANOG posts for probably 2 years now.. this is my 1st post.
> >
> > I need help with a reality/sanity check.   Traceroute is a good tool for
> > checking for routing type problems (loops).  Does anyone feel it's a good tool
> > to use for testing "bandwidth"....  My obvious answer is it isn't a good tool
> > for that....  One problem I see is that the way traceroute works, if a
> > transport mixes media between say Ethernet to LANE and back to Ethernet you
> > give room for Destination unreachable responses from a trace route because you
> > have to to packet switching medias with a fast cell switched media in
> > between.... packets less than 64k (like traceroute info) are easily lost in the
> > conversion from ethernet to LANE.
> >
> > Does this sound right?
> > Thanks,
> > Paul A. Bradford
> >
> >
> 
>