[ILUG] Traceroute giving request timeout on Fedora Core3

[Anil Kamath]

Thanks for your response it works with ICMP but i checked with a friend of
mine and he says it works with UDP too. Any specific reason as to why the
request time out error occurs. why are the UDP packets dropped ??

with ICMPis as follows:

 traceroute -I yahoo.com
traceroute: Warning: yahoo.com has multiple addresses; using 66.94.234.13
traceroute to yahoo.com (66.94.234.13), 30 hops max, 38 byte packets
 1  192.168.1.1 (192.168.1.1)  2.675 ms  0.792 ms  0.955 ms
 2  59.92.128.1 (59.92.128.1)  14.346 ms  11.694 ms  14.111 ms
 3  218.248.249.6 (218.248.249.6)  41.812 ms  39.246 ms  39.282 ms
     MPLS Label=399 CoS=6 TTL=1 S=1
     MPLS Label=522 CoS=0 TTL=2 S=0
 4  218.248.255.9 (218.248.255.9)  39.562 ms  39.265 ms  38.415 ms
     MPLS Label=522 CoS=6 TTL=1 S=1
 5  218.248.255.10 (218.248.255.10)  38.987 ms  38.756 ms  38.032 ms
 6  202.54.185.250 (202.54.185.250)  43.133 ms  44.102 ms  43.179 ms
 7  mum-chn-1st-stm1.Bbone.vsnl.net.in (202.54.2.221)  66.410 ms  66.757 ms
67.404 ms
 8  nny-mum-1st-stm1.Bbone.vsnl.net.in (202.54.2.18)  258.385 ms  271.959ms
273.878 ms
 9  219.64.229.1.mpls-vpn-ny.static.vsnl.net.in (219.64.229.1)  317.847 ms
323.749 ms  308.085 ms
10  UNKNOWN-216-115-97-198.yahoo.com (216.115.97.198)  322.065 ms  318.711ms
319.312 ms
11  ge-4-0-0-p451.msr2.scd.yahoo.com (216.115.106.207)  313.446 ms
ge-4-0-0-p441.msr1.scd.yahoo.com (216.115.106.203)  310.828 ms  320.447 ms
12  ten-1-3-bas2.scd.yahoo.com (66.218.82.219)  319.509 ms  310.471 ms
318.195 ms
13  w2.rc.vip.scd.yahoo.com (66.94.234.13)  321.353 ms  319.181 ms  318.430ms


With UDP default option of traceroute the response is as follows:

[root at vivek ~]$ traceroute yahoo.com
traceroute: Warning: yahoo.com has multiple addresses; using 66.94.234.13
traceroute to yahoo.com (66.94.234.13), 30 hops max, 38 byte packets
 1  192.168.1.1 (192.168.1.1)  2.280 ms  1.055 ms  0.943 ms
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * *

what might be the real issue



On 2/18/06, Snowbat <snowbat at oceanfree.net> wrote:
>
> On Thursday 16 February 2006 15:43, Anil Kamath wrote:
>
> > On 2/16/06, John Reilly <jr at inconspicuous.org> wrote:
> > > On Wed, 2006-02-15 at 18:55 +0530, Anil Kamath wrote:
> > > > I am unable to use traceroute on fedora core3 I am using vmware ws 4
> > > > the
> > > >
> > > > tracert works fine on winxp sp2 but on fedora it just goes thru the
> > >
> > > first
> > >
> > > > hop and later gives a request timeout.
> > >
> > > Is that fedora inside of vmware running on the XP box?  or are both
> > > fedora & winxp running in VMs?
> > >
> > > Anyway, keep in mind that traceroute and tracert are not exactly the
> > > same.  tracert send icmp echo packets whereas traceroute uses udp.
> > >
> > > You could also try mtr or xmtr on fedora which uses icmp echo.
>
> > thanks john the mtr worked fine.
> > but can the normal traceroute progam be put to use . any flags which i
> must
> > have missed ?
>
> Use traceroute -I to trace using ICMP.
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--
Thanks & Regards,
Anil M Kamath
mobile:9880037400