In article <xoav1wwwszyf.fsf@sun.com>,
James Carlson <james.d.carlson@sun.com> wrote:

> bill@0spam.net writes:
> > I am having a problem reaching what should be an easily reachable
> > server going through 4 ISPs. I have no problems pinging or
> > tracerouting to other hosts on the Internet. The target server is
> > reachable from just about anywhere except the DSL connection I'm going
> > through. The route goes through four ISPs: Xspedius, AT&T, Qwest, and
>
> Are you _sure_ it's a routing problem? If it is, then looks like it's
> fairly clearly within speakeasy.net, as the last working hop is there
> as are all of the hops past that point.

If traceroutes from other places to the destination host make it
successfully through speakeasy.net, it's likely to be a problem with
speakeasy's route back to the sending address.

The best way to troubleshoot problems like this is by tracing in both
directions. You need to start a trace from somewhere on the destination
network, and see how far it goes. If Speakeasy has a "looking glass" it
may be able to show you their routes for your address.

--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
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