From: huang gang (bgv@ggv.com.cn)
Date: Tue Aug 05 2003 - 03:44:43 GMT-3
Scott and Biondino:
you are right! i am sorry for my mistake.but i think there are different method to achiving TRACEROUTE.maybe ICMP is another way?
thanks!
huangg
----- Original Message -----
From: "Biondino, Joseph" <joseph.biondino@au.unisys.com>
To: "huang gang" <bgv@ggv.com.cn>; "Scott Morris" <swm@emanon.com>; "Tom Young" <gitsyoung@yahoo.co.jp>; <ccielab@groupstudy.com>
Sent: Tuesday, August 05, 2003 1:37 PM
Subject: RE: could ping but couldn't traceroute
> Huang,
>
> I agree with Scott, it does use UDP. Take this as evidence:
>
> bbg-tafe-br1#trace
> Protocol [ip]:
> Target IP address: 1.1.1.1
> Source address: 10.19.67.254
> Numeric display [n]:
> Timeout in seconds [3]:
> Probe count [3]:
> Minimum Time to Live [1]:
> Maximum Time to Live [30]:
> Port Number [33434]:
> Loose, Strict, Record, Timestamp, Verbose[none]:
> Type escape sequence to abort.
> Tracing the route to 1.1.1.1
>
> 1 192.168.219.54 60 msec 40 msec 36 msec
> 2 * *
>
> http://www.cisco.com/warp/public/63/ping_traceroute.html#traceroute
>
>
> Kind regards,
>
> Joseph Biondino
> Network Specialist
> UNISYS
> Network Command Centre
>
> 115 - 117 Wicks Rd
> North Ryde NSW 2113
> Phone: 02 9857 3149
> Group: 02 9390 1107
> Fax: 02 9857 3122
>
> -----Original Message-----
> From: huang gang [mailto:bgv@ggv.com.cn]
> Sent: Tuesday, 5 August 2003 3:16 PM
> To: Scott Morris; Tom Young; ccielab@groupstudy.com
> Subject: Re: could ping but couldn't traceroute
>
> hi,scott:
> i think i can not agree with you.i think tracert is also using icmp echo.you
> can sniffer it using netxray or deb ip pac det on the router.
> thx
> huangg
> email: bgv@ggv.com.cn
> Tel: 010-62984668-3912
> ----- Original Message -----
> From: "Scott Morris" <swm@emanon.com>
> To: "'Tom Young'" <gitsyoung@yahoo.co.jp>; <ccielab@groupstudy.com>
> Sent: Monday, August 04, 2003 9:56 PM
> Subject: RE: could ping but couldn't traceroute
>
>
> > Traceroute uses high port udp as the transport. Ping uses ICMP.
> >
> > Access list or firewall rules in between permitted one but not the
> > other.
> >
> > Scott
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Tom Young
> > Sent: Monday, August 04, 2003 5:28 AM
> > To: ccielab@groupstudy.com
> > Subject: could ping but couldn't traceroute
> >
> >
> > Hi, group
> >
> > A very strange question, for a global address, I
> > could ping it, but couldn't traceroute it. WHY ?
> > I really confused.
> >
> > Thanks alot
> >
> > User Access Verification
> >
> > Password:
> > office01>en
> > Password:
> > office01#trace
> > office01#traceroute 210.178.28.2
> >
> > Type escape sequence to abort.
> > Tracing the route to 210.158.218.2
> >
> > 1 202.248.86.129 0 msec 0 msec 4 msec
> > 2 133.160.0.1 12 msec 8 msec 12 msec
> > 3 133.160.239.34 8 msec 12 msec 8 msec
> > 4 133.160.191.133 20 msec 20 msec 20 msec
> > 5 133.160.224.51 24 msec 16 msec 12 msec
> > 6 133.160.30.32 16 msec 20 msec 20 msec
> > 7 133.160.240.254 16 msec 16 msec 16 msec
> > 8 133.160.12.74 21 msec 16 msec 12 msec
> > 9 210.171.224.49 12 msec 12 msec 12 msec
> > 10 158.205.192.197 16 msec 12 msec 12 msec
> > 11 158.205.192.150 16 msec 20 msec 16 msec
> > 12 158.205.224.46 16 msec 16 msec 16 msec
> > 13 158.205.235.69 16 msec 16 msec 16 msec
> > 14 158.205.200.74 36 msec 36 msec 28 msec
> > 15 * * *
> > 16 * * *
> > 17 * * *
> > 18 * * *
> > 19 * * *
> > 20 * * *
> > 21 * * *
> > 22 * * *
> > 23 * * *
> > 24 * * *
> > 25 * * *
> > 26 * * *
> > 27 * * *
> > 28 * * *
> > 29 * * *
> > 30 * * *
> > office01#ping 210.178.28.2
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 210.158.218.2, timeout
> > is 2 seconds:
> > !!!!!
> > Success rate is 100 percent (5/5), round-trip min/avg/max
> > = 12/14/16 ms
> > office01#
> >
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