If you have a peer that is dropping more than others, weight them so they are the lowest priority to the world. Internally youll have a minor blip but the world is gonna do its own thing. We announce all our prefixes as /24 so we can jack around with them more granularly, so if you have a specific set of customers this is more impactful to you can weight them to the reliable peers, but at the cost of path quality
On Wed, Apr 19, 2023 at 10:04 PM TJ Trout <t...@voltbb.com> wrote: > It's related to your hold timer and your convergence time. Lower to 14/45s > and it will be much faster. > > On Wed, Apr 19, 2023, 5:31 PM Mark - Myakka Technologies <m...@mailmt.com> > wrote: > >> Trey, >> >> That is the main question. If it takes the rest of the Internet 10 mins >> to figure out my BGP dropped, does it matter if I spend $$$$$ of some super >> fast router that can build the tables in 30s? >> >> -- >> Best regards, >> Mark mailto:m...@mailmt.com >> >> Myakka Communications >> www.Myakka.com >> >> ------ >> >> Wednesday, April 19, 2023, 5:55:30 PM, you wrote: >> >> TS> You can prevent this by having a backup default route. The other >> thing is if you are n a physical interface or aggregated interface with a >> vlan on your upstream's router. If its physical it should stop routing >> traffic when it sees the interface down. If not it may keep trying to send >> traffic down that interface. BFD can help with this. It will Also depend on >> how your provider handles the traffic when the the session with you >> terminates. If it will forward it on to your other providers or not. If >> your alternate providers are connected closely to you it shouldn't take to >> long, but it can take 10-20min for the loss of the peer to propagate across >> all global routing tables. >> >> TS> On 4/19/23 9:47 AM, Mark - Myakka Technologies wrote: >> >> 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. >> >> >> >> 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? >> >> >> >> How fast could I expect to get this fail-over to work under best >> conditions? >> >> >> >> Thanks, >> >> Mark mailto:m...@mailmt.com >> >> >> >> Myakka Communications >> >> www.Myakka.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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