nanog mailing list archives
Re: Juniper BGP Convergence Time
From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Sat, 26 May 2018 18:14:17 +0200
Add a static default route on both routers. This will be invalidated as soon the interface goes down. Should be faster than relying on the BGP process on withdrawing the route. Also does not require any config changes at your upstreams. Regards Baldur ons. 16. maj 2018 18.52 skrev Adam Kajtar <akajtar () wadsworthcity org>:
Erich, Good Idea. I can't believe I didn't think of that earlier. Simple and effective. I will go ahead and request the defaults from my ISP and update the thread of the findings. Thanks! On Wed, May 16, 2018 at 10:03 AM Kaiser, Erich <erich () gotfusion net> wrote:A last resort route (default route) could still be good to take from your ISP(s) even if you still do full routes, as the propagation is happeningonthe internet side, you should at least have a path inbound through the other provider. The default route at least would send the traffic out if it does not see the route locally. Just an idea. On Wed, May 16, 2018 at 8:22 AM, Adam Kajtar <akajtar () wadsworthcity org> wrote:I could use static routes but I noticed since I moved to full routes I have had a lot fewer customer complaints about latency(especially whenitcomes to Voice and VPN traffic). I wasn't using per-packet load balancing. I believe juniper default isperIP. My timers are as follows Active Holdtime: 90 Keepalive Interval: 30 Would I be correct in thinking I need to contact my ISP to lower these values? An interesting note is when I had both ISPs connected into a singleMX104the failover was just a few seconds. Thanks again. On Tue, May 15, 2018 at 8:42 PM Ben Cannon <ben () 6by7 net> wrote:Have you checked your timeouts ? -BenOn May 15, 2018, at 4:09 PM, Kaiser, Erich <erich () gotfusion net>wrote:Do you need full routes? What about just a default route from BGP? Erich Kaiser The Fusion Network erich () gotfusion net Office: 815-570-3101On Tue, May 15, 2018 at 5:38 PM, Aaron Gould <aaron1 () gvtc com>wrote:You sure it doesn't have something to do with 60 seconds * 3 = 180secs ofBGP neighbor Time out before it believes neighbor is dead andremoveroutesto that neighbor? AaronOn May 15, 2018, at 9:10 AM, Adam Kajtar <akajtar () wadsworthcity orgwrote:Hello: I'm running two Juniper MX104s. Each MX has 1 ISP connectedrunningBGP(full routes). iBGP is running between the routers via a twoport20Glag. When one of the ISPs fails, it can take upwards of 2 minutesfortraffic to start flowing correctly. The router has the correctrouteintherouting table, but it doesn't install it in the forwarding tableforthefull two mins. I have a few questions if anyone could answer them. - What would a usual convergence time be for this setup? - Is there anything I could do speed this process up? (I triedMultipath)- Any tips and tricks would be much appreciated Thanks in Advance -- Adam Kajtar Systems Administrator City of Wadsworth akajtar () wadsworthcity org ----------------------------------------------------- http://www.wadsworthcity.com Facebook <http://www.facebook.com/cityofwadsworth>* |* Twitter <https://twitter.com/CityOfWadsworth> *|* Instagram <https://www.instagram.com/cityofwadsworth/> *|* YouTube <https://www.youtube.com/channel/UCymlH-AZgvxTaHtgp3-AmDQ>-- Adam Kajtar Systems Administrator, Safety Services City of Wadsworth Office 330.335.2865 Cell 330.485.6510 akajtar () wadsworthcity org ----------------------------------------------------- http://www.wadsworthcity.com Facebook <http://www.facebook.com/cityofwadsworth>* |* Twitter <https://twitter.com/CityOfWadsworth> *|* Instagram <https://www.instagram.com/cityofwadsworth/> *|* YouTube <https://www.youtube.com/channel/UCymlH-AZgvxTaHtgp3-AmDQ>-- Adam Kajtar Systems Administrator, Safety Services City of Wadsworth Office 330.335.2865 Cell 330.485.6510 akajtar () wadsworthcity org ----------------------------------------------------- http://www.wadsworthcity.com Facebook <http://www.facebook.com/cityofwadsworth>* |* Twitter <https://twitter.com/CityOfWadsworth> *|* Instagram <https://www.instagram.com/cityofwadsworth/> *|* YouTube <https://www.youtube.com/channel/UCymlH-AZgvxTaHtgp3-AmDQ>
Current thread:
- Re: Juniper BGP Convergence Time, (continued)
- Re: Juniper BGP Convergence Time Ruairi Carroll (May 15)
- Re: Juniper BGP Convergence Time Aaron Gould (May 15)
- Re: Juniper BGP Convergence Time Kaiser, Erich (May 15)
- Re: Juniper BGP Convergence Time Ben Cannon (May 15)
- Re: Juniper BGP Convergence Time Adam Kajtar (May 16)
- Re: Juniper BGP Convergence Time Kaiser, Erich (May 16)
- Re: Juniper BGP Convergence Time Adam Kajtar (May 16)
- Re: Juniper BGP Convergence Time Mike Hammett (May 17)
- Re: Juniper BGP Convergence Time Adam Kajtar (May 17)
- Re: Juniper BGP Convergence Time Hugo Slabbert (May 17)
- Re: Juniper BGP Convergence Time Kaiser, Erich (May 15)
- Re: Juniper BGP Convergence Time Baldur Norddahl (May 26)
- Re: Juniper BGP Convergence Time Adam Kajtar (May 30)
- Re: Juniper BGP Convergence Time Saku Ytti (May 31)
- Re: Juniper BGP Convergence Time Thomas Bellman (May 16)
- Re: Juniper BGP Convergence Time Aaron Gould (May 16)
- Re: Juniper BGP Convergence Time Eric Sieg (May 17)
- Re: Juniper BGP Convergence Time Phil Lavin (May 21)
- Re: Juniper BGP Convergence Time Adam Kajtar (May 16)
- Re: Juniper BGP Convergence Time Mark Tinka (May 22)
- Re: Juniper BGP Convergence Time Adam Kajtar (May 23)
- Re: Juniper BGP Convergence Time Vincent Bernat (May 24)