I do have access to a CCR doing full table BGP. It's a disaster. You don't need a $50k Juniper. You just need a $500 server with some 10G cards.
By traffic flows, I mean Netflow, IPfix, etc. No, they don't. ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ----- Original Message ----- From: "Darin Steffl" <[email protected]> To: "AnimalFarm Microwave Users Group" <[email protected]> Sent: Tuesday, September 24, 2019 6:35:10 PM Subject: Re: [AFMUG] Running MPLS Mike, Unless you run CCR for your bgp routers, you can't say they don't work. We've been running bgp on our network for 3+ years with CCR's and it works. Convergence time is slower than a $50k Juniper sure but it doesn't affect us badly. Traffic flows smoothly and the only time it really takes time to converge is when we update firmware on the Tiks twice a year during our maintenance windows. When it's not downloading full tables the other 99.99% of the year, they move plenty of traffic happily without any performance issues. On Tue, Sep 24, 2019, 3:56 PM Mike Hammett < [email protected] > wrote: Anyone that says CCRs work fine with full routes doesn't know what they're talking about. ;-) Always take full tables so you have proper information for your traffic flows, uRPF, etc. ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP From: "Steve Jones" < [email protected] > To: "AnimalFarm Microwave Users Group" < [email protected] > Sent: Tuesday, September 24, 2019 3:52:47 PM Subject: Re: [AFMUG] Running MPLS for now we take full bgp tables from each, and default route. then ospf distributes default if connected. We run rb1100ahx2 at all sites but the edges. those are ccr1072, i dont care what anybody says, theyve been handling the tables just fine for over a year even with the one core pegged when taking the tables. The 1100s are sufficient for what we are doing, but id like to put 1072s wherever there are redundant paths. bringing the full or aggregated tables in would be nice. thats what i was asking about, if mpls would be what i needed to hop over the 1100s since the underlying network is ospf On Tue, Sep 24, 2019 at 3:45 PM Seth Mattinen < [email protected] > wrote: <blockquote> On 9/24/19 1:21 PM, Cassidy B. Larson wrote: > Dont bother importing all the 760k routes learned from your upstream > providers into your core. Having that many routes is only going to > impact your egress traffic to the Internet, which is probably a drop in > the bucket compared to your ingress traffic loads (Netflix, CDNs, etc). > Just advertise a default route into the core from both providers and > your core can figure out which way to go to get to the Internets. If you're multihoming you really should consider a full feed, depending on how much you like to sleep. A couple weeks ago, a carrier POP that I and some of my customer use had an issue where their transport carrier died in a way that took down all transports. The carrier's POP router was still up, as was BGP and interfaces, but if you looked at the BGP neighbors there were only a handful of routes coming from them. Relying on a default route effectively sending your traffic into a black hole, whereas if you'd been routing based on prefixes you'd stop sending traffic as the prefixes withdrew when it became islanded. I didn't even notice until the carrier called me on the emergency number and said hey we can't reach our equipment, and I was like that's odd because your interface+BGP is still up but I'm only seeing a few prefixes from you, at which point the larger transport issue was discovered. ~Seth -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com </blockquote> -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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