Re: Router Tester [7:1479]
>Didn't find Appendix A anywhere in that document. Please advise. Ooops...it got left out again. I promise to fix it in the new BMWG versions coming out in a couple of weeks. Appendix A. Representative Scenarios A.1 Default-free interprovider peering The DUT exchanges 0.3 to 0.5 D with a small number of peers. Typically, routers in this application are limited by bandwidth rather than route processing A.2 Interprovider peering with transit The DUT exchanges 1.3 D routes with a small number of peers. A.2 Provider POP router The DUT has a large number (>10) of eBGP peers. To 10% of the peers, the DUT advertises 1.3 D. To 20% of the peers, the DUT advertises 0.3 D. To 70% of the peers, the DUT advertises default. 50% of the peers advertise an aggregate and a more-specific route to the DUT. 20% of the peers advertise 10 or more routes to the DUT. 30% of the peers advertise a single route to the DUT/ A.3 Multihomed customer router The DUT connects to 2 peers. It advertises an aggregate and a more-specific to each. > >"Howard C. Berkowitz" wrote: > > > >> ...routers are the same. A customer site multihoming router, a POP >> aggregation router, a POP edge router to the intraprovider core, an >> intraprovider core router, and an interprovider border router all >> have different needs. See appendix A of > > http://www.ietf.org/internet-drafts/draft-berkowitz-bgpcon-01.txt. >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=2118&t=1479 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Router Tester [7:1479]
Didn't find Appendix A anywhere in that document. Please advise. "Howard C. Berkowitz" wrote: > ...routers are the same. A customer site multihoming router, a POP > aggregation router, a POP edge router to the intraprovider core, an > intraprovider core router, and an interprovider border router all > have different needs. See appendix A of > http://www.ietf.org/internet-drafts/draft-berkowitz-bgpcon-01.txt. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=2106&t=1479 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Router Tester [7:1479]
Easily. It all depends how and where you look, but I'm seeing 103K right now: telnet://route-views.oregon-ix.net sh ip bgp sum And the highest is looking like: 198.32.162.18 4 4513 6942069052 443975300 6d07h 103539 -- Jason Roysdon, CCNP+Security/CCDP, MCSE, CNA, Network+, A+ List email: [EMAIL PROTECTED] Homepage: http://jason.artoo.net/ ""Chuck Larrieu"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Howard commented: > >10 million routes? Even with the growth rate of the Internet going > >exponential again, I wouldn't see that happening for several years > >yet. By then, we will have new router generations. > > Me says: I see according to the Bates report that "the internet routing > table" is now hitting 100,000 plus routes a couple of times a week. Any > takers on when the number stays over 100,000 for three solid weeks? > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=1669&t=1479 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Router Tester [7:1479]
>Howard commented: >>10 million routes? Even with the growth rate of the Internet going >>exponential again, I wouldn't see that happening for several years >>yet. By then, we will have new router generations. > >Me says: I see according to the Bates report that "the internet routing >table" is now hitting 100,000 plus routes a couple of times a week. Any >takers on when the number stays over 100,000 for three solid weeks? > The various routing table surveys (Bates, Smith, Huston) vary slightly, but they actually understate the routing table load seen by a major provider router. The reports don't include internal and customer routes that are aggregated. Guesstimates are that such routes can be 30 to 50 percent of the default free zone, for a given carrier. Also, be aware that it's more than just the "best route" to a destination. We are seeing more and more "route instances" -- different ways to reach a destination, typically different AS paths. The old rule of thumb was that a well-connected provider saw around 4 or 5 instances for each route, but more recent measurements suggest 10 is not at all uncommon. In general, AS paths are getting shorter, but there are more total route instances. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=1661&t=1479 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Router Tester [7:1479]
Howard commented: >10 million routes? Even with the growth rate of the Internet going >exponential again, I wouldn't see that happening for several years >yet. By then, we will have new router generations. Me says: I see according to the Bates report that "the internet routing table" is now hitting 100,000 plus routes a couple of times a week. Any takers on when the number stays over 100,000 for three solid weeks? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=1655&t=1479 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Router Tester [7:1479]
>Hi, > >I just wanted to know your opinion as a expert of router. >When I choose a core/edge router (72xx/75xx/12xx, Mx series) in what part I >must considered carefully. >Probably, in forwarding capacity, cpu/routing engine utilization, how can >the router manage router flappings, how can I push the router over his limit >...injecting 10.000.000 bgp routes and see what would be happened in that >router:) >Just let me know your opinion ...please >Thanks for you opinion > >Regards >Sipitung Well, speaking as an expert, I first try to come up with a fairly specific definition of the way the router is going to be used. Don't feel bad about this -- it's an exercise I constantly go through with my internal product groups, pointing out to them that not all BGP routers are the same. A customer site multihoming router, a POP aggregation router, a POP edge router to the intraprovider core, an intraprovider core router, and an interprovider border router all have different needs. See appendix A of http://www.ietf.org/internet-drafts/draft-berkowitz-bgpcon-01.txt. Knowing the ultimate breakdown limits of a router isn't necessarily going to help tell you how the router will behave in your application. Take your example of 10,000,000 routes. What if you are evaluating a POP aggregation router with 1000 customer interfaces? On most of these, you will receive less than 10 prefixes, and it's good operational design to use prefix-limit to be sure you don't receive more than 100 routes per peer. In the other direction, towards the customer, only a small fraction will want full routes. Many will want just your customer routes, which certainly is smaller than the default-free table. So the POP router may not even need a full table, but the 30-50% of it that comprises customer routes. 10 million routes? Even with the growth rate of the Internet going exponential again, I wouldn't see that happening for several years yet. By then, we will have new router generations. What are you trying to understand about what happens when the router goes over its limits? It may be possible to understand that simply from detailed understanding of the protocols and other mechanisms involved, without hands-on tests. > > >-Original Message- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of >Howard C. Berkowitz >Sent: Saturday, April 21, 2001 10:16 PM >To: [EMAIL PROTECTED] >Subject: Re: Router Tester [7:1479] > > >>Hi groups, >> >>Does anyone have clues,comments about the best router tester which can >>simulates traffics, routes, route damping and so on. >>I have heard Agillent, Smartbits, GN Nettest but still can't decided which >>one the best. >>Any helps, clues, suggestion will be appreciated. >> >> >>Regards >>sipitung > >What problem are you trying to solve in your router testing? > >Are you trying to measure the forwarding capacity? The convergence >characteristics with and without policy? (see >http://www.ietf.org/internet-drafts/draft-berkowitz-bgpcon-01.txt) > >Are you trying to verify the correctness of the protocol implementation? > >How do you define "best?" If a given tester cost twice as much as >another, but could impose 95% of line rate rather than 75% of line >reate, is this important? > >What kind of reports do you expect the tester to give you? How much >programming are you willing to do to analyze test results? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=1600&t=1479 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Router Tester [7:1479]
>Hi groups, > >Does anyone have clues,comments about the best router tester which can >simulates traffics, routes, route damping and so on. >I have heard Agillent, Smartbits, GN Nettest but still can't decided which >one the best. >Any helps, clues, suggestion will be appreciated. > > >Regards >sipitung What problem are you trying to solve in your router testing? Are you trying to measure the forwarding capacity? The convergence characteristics with and without policy? (see http://www.ietf.org/internet-drafts/draft-berkowitz-bgpcon-01.txt) Are you trying to verify the correctness of the protocol implementation? How do you define "best?" If a given tester cost twice as much as another, but could impose 95% of line rate rather than 75% of line reate, is this important? What kind of reports do you expect the tester to give you? How much programming are you willing to do to analyze test results? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=1483&t=1479 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
