Anyone interested in setting up his own IP SLA probes by hand and then collect the measurements into a database, can use a Perl tool we developed at 2005:
http://sourceforge.net/projects/saa-collector It's rather old (SAA got renamed into IPSLA in the meantime) and, in retrospect, the code is a little rough around the edges, but it's nevertheless usable. Regards, Athanasios On Wed, Mar 11, 2009 at 10:20 PM, Andreas, Rich < rich_andr...@cable.comcast.com> wrote: > I have found that Cisco IPSLA is heavily used in the MSO/Service > Provider Space. Juniper has equivalent functionality via RPM. > > Rich > > > -----Original Message----- > From: Saqib Ilyas [mailto:msa...@gmail.com] > Sent: Saturday, March 07, 2009 6:12 AM > To: nanog@nanog.org > Subject: Re: Network SLA > > I must thank everyone who has answered my queries. Just a couple more > short questions. > For instance, if one is using MRTG, and wants to check if we can meet > a 1 Mbps end-to-end throughput between a couple of customer sites, I > believe you would need to use some traffic generator tools, because > MRTG merely imports counters from routers and plots them. Is that > correct? > We've heard of the BRIX active measurement tool in replies to my > earlier email. Also, I've found Cisco IP SLA that also sends traffic > into the service provider network and measures performance. How many > people really use IP SLA feature? > Thanks and best regards > > On Mon, Feb 23, 2009 at 1:19 PM, Zartash Uzmi <zart...@gmail.com> wrote: > > As I gather, there is a mix of answers, ranging from "building the > resources > > according to requirements and HOPE for the best" to "use of arguably > > sophisticated tools and perhaps sharing the results with the legal > > department". > > > > I would be particularly interested in hearing the service providers' > > viewpoint on the following situation. > > > > Consider a service provider with MPLS deployed within its own network. > > > > (A) When the SP enters into a relation with the customer, does the SP > > establish new MPLS paths based on customer demands (this is perhaps > similar > > to "building" based on requirements as pointed out by David)? If yes, > > between what sites/POPs? I assume the answer may be different > depending upon > > a single-site customer or a customer with multiple sites. > > > > (B) For entering into the relationship for providing X units of > bandwidth > > (to another site of same customer or to the Tier-1 backbone), does the > SP > > use any wisdom (in addition to MRTG and the likes)? If so, what > scientific > > parameters are kept in mind? > > > > (C) How does the customer figure out that a promise for X units of > bandwidth > > is maintained by the SP? I believe customers may install some > measuring > > tools but is that really the case in practice? > > > > Thanks, > > Zartash > > > > On Fri, Feb 20, 2009 at 1:16 AM, Stefan <netfort...@gmail.com> wrote: > > > >> Saqib Ilyas wrote: > >> > >>> Greetings > >>> I am curious to know about any tools/techniques that a service > provider > >>> uses > >>> to assess an SLA before signing it. That is to say, how does an > >>> administrator know if he/she can meet what he is promising. Is it > based on > >>> experience? Are there commonly used tools for this? > >>> Thanks and best regards > >>> > >>> > >> Not necessarily as a direct answer (I am pretty sure there'll be > others on > >> this list giving details in the area of specific tools and > standards), but I > >> think this may be a question (especially considering your end result > >> concern: *signing the SLA!) equally applicable to your legal > department. In > >> the environment we live, nowadays, the SLA could (should?!? ... > >> unfortunately) be "refined" and (at the other end - i.e. receiving) > >> "interpreted" by the lawyers, with possibly equal effects (mostly > financial > >> and as overall impact on the business) as the tools we (the technical > >> people) would be using to measure latency, uptime, bandwidth, jitter, > etc... > >> > >> Stefan > >> > >> > > > > > > -- > Muhammad Saqib Ilyas > PhD Student, Computer Science and Engineering > Lahore University of Management Sciences > > > >
