[40808] in North American Network Operators' Group

home help back first fref pref prev next nref lref last post

Re: Measuring PoP to PoP latency--tools to use?

daemon@ATHENA.MIT.EDU (Jake Khuon)
Wed Aug 22 20:55:03 2001

Message-Id: <200108230052.f7N0qsXN024413@Espresso.NEEBU.Net>
From: "Jake Khuon" <khuon@GBLX.Net>
To: k claffy <kc@ipn.caida.org>
Cc: nanog@nanog.org
In-reply-to: k claffy's message of Wed, 22 Aug 2001 17:38:25 -0700.
	     <20010822173825.B16777@caida.org> 
Reply-To: khuon@GBLX.Net (Jake Khuon)
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Wed, 22 Aug 2001 17:52:23 -0700
Errors-To: owner-nanog-outgoing@merit.edu


### On Wed, 22 Aug 2001 17:38:25 -0700, k claffy <kc@ipn.caida.org> casually
### decided to expound upon nanog@nanog.org the following thoughts about
### "Re: Measuring PoP to PoP latency--tools to use?":

kc> how many ISPs use this and [how] do they
kc> find it helps them operationally?

I don't know any ISPs that us it.  I imagine some enterprise networks do.  I
played around with it in anticipation for using it to measure jitter but
found it of limited usefulness because if you have to deploy a box to do
localised collection of the data anyways you may as well run a better jitter
probe from that unix box.


kc> it has been around for years, during which time
kc> i have heard no actual data wrt its operational utility,
kc> reckon that cisco would be responsive
kc> to ISP suggestions for improvements to it

I thought I read somewhere that Cisco was planning on dropping RTR from the
featuresets.  Then again, I may have just imagined that.


kc> (if other router vendors have similar functionality
kc> they should probably speak up;
kc> we can put such features in the caida tool taxonomy)

Seconded...


kc> maybe a nanog panel on provider experiences/caveats
kc> on any of such vendor-provided functionality 
kc> is not a terrible idea.
kc> mod all the anxiety involved in sharing such experiences

I remember at one time that on-the-router measurement features were kinda
frowned upon.  At least that's the general feeling I got from people.  Has
this attitude reversed?


--
/*====================[ Jake Khuon <khuon@GBLX.Net> ]======================+
 | Chief Global Data Network Management Architect      /~_ |_ () |3 /-\ |_ |
 | VOX: +1 (425) 391-2262  Fax: +1 (425) 391-6772      \_| C R O S S I N G |
 +=============[ 900 4th. Ave., Floor 12, Seattle, WA  98164 ]=============*/



home help back first fref pref prev next nref lref last post