On Wed, 3 Dec 2008, Anders Lindbäck wrote:
Mtr is even less usefull then that, in its default mode it does a traceroute
and then proceeds to ICMP Ping flood each IP in the list generated by the
traceroute, the result is usually completly useless on WAN topologies due to
asym-routing, ICMP node
On 4 dec 2008, at 14.05, Pekka Savola wrote:
On Wed, 3 Dec 2008, Anders Lindbäck wrote:
Mtr is even less usefull then that, in its default mode it does a
traceroute and then proceeds to ICMP Ping flood each IP in the
list generated by the traceroute, the result is usually completly
On 4 dec 2008, at 17.49, Daniel Hagerty wrote:
=?ISO-8859-1?Q?Anders_Lindb=E4ck?= [EMAIL PROTECTED] writes:
According to the 0.75 sorcecode ICMP is still the default prot
used, =20
and the definition of MTR from bitwizards homepage disagress with
you:
Have you considered checking an
On Wed, 3 Dec 2008, Pekka Savola wrote:
FWIW, Mtr measures latency/delay and loss based on ICMP messages heard back
from the routers on path. As a result, in almost all cases, the real
hop-by-hop latency of actual end-to-end data packets is better than it can
report.
mtr has a recently
Lee, Steven (NSG Malaysia) schrieb:
Hi all, do you have any recommended tools that can measure
latency/delay hop by hop basis? Preferable the tools can measure the
running (live) traffic.
Try Smokeping for long-term latency stats: http://oss.oetiker.ch/smokeping/
Fredy
On Tue, 2 Dec 2008, Antonio Querubin wrote:
On Wed, 3 Dec 2008, Pekka Savola wrote:
FWIW, Mtr measures latency/delay and loss based on ICMP messages heard
back from the routers on path. As a result, in almost all cases, the real
hop-by-hop latency of actual end-to-end data packets is better
]
Sent: Tuesday, December 02, 2008 11:26 PM
To: Andrew Mulholland; nanog@nanog.org
Subject: Re: Recommendation of Tools
At 11:23 PM 02-12-08 -0500, Andrew Mulholland wrote:
On Tue, Dec 2, 2008 at 10:47 PM, Lee, Steven (NSG Malaysia)
[EMAIL PROTECTED] wrote:
Hi all, do you have any
Mtr is even less usefull then that, in its default mode it does a
traceroute and then proceeds to ICMP Ping flood each IP in the list
generated by the traceroute, the result is usually completly useless
on WAN topologies due to asym-routing, ICMP node protections by
carriers and punting
, and then record the path change (time/date and
the differences in latency on the new path)?
Mike
-Original Message-
From: Anders Lindbäck [mailto:[EMAIL PROTECTED]
Sent: Wednesday, December 03, 2008 10:02 AM
To: Pekka Savola
Cc: nanog@nanog.org
Subject: Re: Recommendation of Tools
Mtr
AM
To: Pekka Savola
Cc: nanog@nanog.org
Subject: Re: Recommendation of Tools
Mtr is even less usefull then that, in its default mode it does a
traceroute and then proceeds to ICMP Ping flood each IP in the list
generated by the traceroute, the result is usually completly useless
on WAN topologies
On Wed, Dec 3, 2008 at 11:01 AM, Anders Lindbäck [EMAIL PROTECTED] wrote:
And using UDP will not really provide better results due to the same thing,
and IIRC Cisco from 12.0 has a standard setting of no more then 1 ICMP
Unreach per 500ms..
then connect to a udp service with something like
Lee, Steven (NSG Malaysia) wrote:
Hi all, do you have any recommended tools that can measure latency/delay
hop by hop basis? Preferable the tools can measure the running (live)
traffic.
Tools like smokeping, mtr, traceroute and all that will give you highly
skewed results, whose accuracy will
The problem is return path ICMP time exceeded from intermediate hops, and not
the response from the final destination.
– S
-Original Message-
From: Andre Gironda [EMAIL PROTECTED]
Sent: Wednesday, December 03, 2008 16:35
To: nanog@nanog.org nanog@nanog.org
Subject: Re: Recommendation
On Wed, Dec 3, 2008 at 3:54 PM, Nick Hilliard [EMAIL PROTECTED] wrote:
If you want to do this properly, you will need to install dedicated
measurement hosts hanging off each router and measure response times to
them instead. RIPE TTM boxes are pretty good for this:
http://www.ripe.net/ttm/
Lee, Steven (NSG Malaysia) wrote:
Hi all, do you have any recommended tools that can measure latency/delay
hop by hop basis? Preferable the tools can measure the running (live)
traffic.
One other freeware/open-source tool you might want to look at is pchar
which attempts to characterize
Am 04.12.2008 um 01:56 schrieb Antonio Querubin:
Lee, Steven (NSG Malaysia) wrote:
Hi all, do you have any recommended tools that can measure latency/
delay hop by hop basis? Preferable the tools can measure the
running (live) traffic.
One other freeware/open-source tool you might want to
Hi all, do you have any recommended tools that can measure latency/delay hop by
hop basis? Preferable the tools can measure the running (live) traffic.
Regards,
Steven Lee
On Tue, Dec 2, 2008 at 10:47 PM, Lee, Steven (NSG Malaysia)
[EMAIL PROTECTED] wrote:
Hi all, do you have any recommended tools that can measure latency/delay
hop by hop basis? Preferable the tools can measure the running (live)
traffic.
mtr ? - http://www.bitwizard.nl/mtr/
its an ncurses
perfSONAR is another, more long term solution for performance
monitoring (if that's what you happen to be looking for).
http://www.internet2.edu/performance/pS-PS/
--
Brad Fleming
Network Engineer
Kansas Research and Education Network
Office:785-856-9800 x.222
Moblie: 785-865-7231
NOC:
I don't know if it helps, but anyways. There is another tool called Iperf (
http://sourceforge.net/projects/iperf ). It's usually used to report
bandwidth between two hops which you define, but it can be also used to
measure jitter, datagram loss, and a lot of other things, one in all it's
very
On Tue, 2 Dec 2008, Andrew Mulholland wrote:
On Tue, Dec 2, 2008 at 10:47 PM, Lee, Steven (NSG Malaysia)
[EMAIL PROTECTED] wrote:
Hi all, do you have any recommended tools that can measure latency/delay
hop by hop basis? Preferable the tools can measure the running (live)
traffic.
mtr ? -
On Dec 3, 2008 1:52am, Pekka Savola [EMAIL PROTECTED] wrote:
On Tue, 2 Dec 2008, Andrew Mulholland wrote:
On Tue, Dec 2, 2008 at 10:47 PM, Lee, Steven (NSG Malaysia)
[EMAIL PROTECTED] wrote:
Hi all, do you have any recommended tools that can measure latency/delay
hop by hop basis?
At 11:23 PM 02-12-08 -0500, Andrew Mulholland wrote:
On Tue, Dec 2, 2008 at 10:47 PM, Lee, Steven (NSG Malaysia)
[EMAIL PROTECTED] wrote:
Hi all, do you have any recommended tools that can measure latency/delay
hop by hop basis? Preferable the tools can measure the running (live)
traffic.
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