A modern x86 CPU and ROS v6 could do a full table in about 30 seconds (or less). On ROS v7, it should be even less.
----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ----- Original Message ----- From: dmmoff...@gmail.com To: "AnimalFarm Microwave Users Group" <af@af.afmug.com> Sent: Wednesday, April 19, 2023 10:44:37 AM Subject: Re: [AFMUG] BGP Question We have a Juniper MX10008 which is supposed to crunch a full table in about 30 seconds, but that's a half million dollar router. If you're doing it on a general purpose CPU I think 10-15 minutes doesn't sound weird. Something I've been meaning to try in the lab was having a static default route with distance 255. The hope would be traffic falls back to that when we haven't received a better route yet. Maybe I'd have two or three of those default routes with a qualified-next-hop so they're only active if the upstream connection is up. I'd adjust Juniper's protocol preference level so it'll prefer a BGP route if one exists and otherwise use the static default route. The hope would be while I'm waiting 30 seconds to receive routes that traffic still moves anyway. I haven't actually tried this experiment yet, but I think in principal it should work. There might be a Mikrotik equivalent way. -Adam -----Original Message----- From: AF <af-boun...@af.afmug.com> On Behalf Of Mark - Myakka Technologies Sent: Wednesday, April 19, 2023 11:19 AM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Subject: Re: [AFMUG] BGP Question Dennis, Using mikrotik routers. Two MaxxWave x86 i5 8 core 10 years old v6.47.9 One CCR1072 v6.47.9 Yes taking full tables. Tried BFD while back. Didn't seem that my upstream was supporting it. Never established a session. Thinking I may need to start looking at new hardware and v7. But before I go that route, what should I expect if I do get 3 brand new CCR2116-12G-4S+ running v7. -- Best regards, Mark mailto:m...@mailmt.com Myakka Communications www.Myakka.com ------ Wednesday, April 19, 2023, 11:08:45 AM, you wrote: DB> Really depends on a lot of things. DB> 1.What router are you using? DB> 2. Are you taking full tables from all of your upstreams? DB> 3. Are you not using BFD ? DB> 4. What version of RouterOS are you using? DB> V7 will be faster, 2216 will be faster than a 1036, your hold time is kinda long.. DB> Dennis Burgess, Mikrotik Certified Trainer MTCNA, MTCRE, MTCWE, DB> MTCTCE, MTCINE, MTCSE, HE IPv6 Sage, Cambium ePMP Certified Author DB> of "Learn RouterOS- Second Edition" DB> Link Technologies, Inc -- Mikrotik & WISP Support Services DB> Office: 314-735-0270 Website: http://www.linktechs.net Need to DB> Automate MikroTik Backups: https://cloud.linktechs.net Create DB> Wireless Coverage's with www.towercoverage.com DB> -----Original Message----- DB> From: AF <af-boun...@af.afmug.com> On Behalf Of Mark - Myakka DB> Technologies DB> Sent: Wednesday, April 19, 2023 9:48 AM DB> To: af@af.afmug.com DB> Subject: [AFMUG] BGP Question DB> We have two circuits coming into our NOC. We peer with 3 different providers on each circuit. If a circuit fails, BGP will do it's magic and traffic will start flowing though the surviving circuit. DB> However, we seemed to get about 5 - 10 minutes of unstable Internet while this is happening. Is this normal? If not, what can I do to speed up the process? Is it a function of my routers having to rebuild routes? Will new faster routers help? Is it a function of timers? Keep-Alive is 30s and hold is at 90s. Should I investigate BFD? DB> How fast could I expect to get this fail-over to work under best conditions? DB> Thanks, DB> Mark mailto:m...@mailmt.com DB> Myakka Communications DB> https://imsva91-ctp.trendmicro.com:443/wis/clicktime/v1/query?url=ww DB> w.Myakka.com&umid=08E7599C-F9B1-CC05-BF9C-94CA5B14AB1B&auth=079c058f DB> 437b7c6303d36c6513e5e8848d0c5ac4-1a5796e3447e2e1707012b957aa10dd6970 DB> 458d5 DB> -- DB> AF mailing list DB> AF@af.afmug.com DB> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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