[Scamper-dev] scamper data collection

Young Hyun youngh at caida.org
Thu Jul 29 17:27:21 PDT 2004


On Thu, 29 Jul 2004, Bradley Huffaker wrote:

Yes, at all hops and the destination.

 --Young


> I assume you would like to be able to store all this information about the
> reply(ies) from the destination as well.
>
> On Thu, Jul 29, 2004 at 10:31:13AM -0700, Young Hyun wrote:
> > For the purposes of resolving router aliases and for finger printing end
> > hosts, we may want to store more information about the TTL-expired packet
> > received at all hops (including the intermediate hops).  Currently,
> > scamper_hop has hardcoded fields for address and TTLs, but it would be
> > good if some extensible mechanism could allow the optional storage of
> > other data like TOS, ID, and flags from the IP header and the body of the
> > ICMP packet.
> >
> > This feature isn't required, but it would be very nice to have if it won't
> > be too hard to support, since at the moment, skitter is throwing away a
> > lot of potentially useful data.  A crude approximation of this feature
> > would be the optional storage of the entire TTL-expired packet at each
> > hop.


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