Ping sends an ICMP echo request, tracert may send ICMP
echo request or it may send a UDP packet. If the
tracert you are using is sending UDP (with increasing
TTLs), then an access list or firewall could be
reponsible for what you are seeing.
Ping works off of ICMP echo request/echo replies.
Tracert works off of the TTL value, it starts off with
a TTL of 1, then sends with TTL of 2 etc.. The router
that kills the packet sends an ICMP TTL expired back
to the sending host, so that's how it learns the path.
The outbound packet type is really irrelevant (it's
discarded), so empty UDP will work instead of an echo
request.
--- tayta <[EMAIL PROTECTED]> wrote:
> can MTU sizes be set differant for your Ping and
> Tracert utilities?
>
> Jose Luis Canillas
> <[EMAIL PROTECTED]> schrieb in im
> Newsbeitrag:
>
05E4D396A23E801E*/c=US/admd=400net/prmd=abnamro/o=notes/s=Canillas/g=Jose-Lu
> [EMAIL PROTECTED]
> > Hi all,
> >
> > Can someone tell me why is it that I can
> traceroute to a NT server on e0,
> > and when I ping it I get time outs?
> >
> > Thanks in advance..
> >
> > Jose Luis
> >
> > ___________________________________
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