nanog mailing list archives
Re: Juniper BGP Convergence Time
From: Eric Sieg <eric.sieg () gmail com>
Date: Thu, 17 May 2018 11:19:44 -0400
You shouldn't need to contact your ISP on the lowered BGP timers as BGP should establish based on the lowest value. That said, they may have a value limit where anything lower than that, is set at your own risk. You can look at running BFD over the BGP session as well. Technically it has nothing to do with convergence, but it can quickly detect a down issue and drop BGP right away. On Wed, May 16, 2018 at 9:22 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 when it comes to Voice and VPN traffic). I wasn't using per-packet load balancing. I believe juniper default is per IP. 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 single MX104 the 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 = 180secsofBGP neighbor Time out before it believes neighbor is dead and removeroutesto that neighbor? AaronOn May 15, 2018, at 9:10 AM, Adam Kajtar <akajtar () wadsworthcity org>wrote:Hello: I'm running two Juniper MX104s. Each MX has 1 ISP connected running BGP(full routes). iBGP is running between the routers via a two port20Glag. When one of the ISPs fails, it can take upwards of 2 minutes for traffic to start flowing correctly. The router has the correct routeintherouting table, but it doesn't install it in the forwarding table forthefull 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>
Current thread:
- Re: Juniper BGP Convergence Time, (continued)
- 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 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)
- Re: Juniper BGP Convergence Time Olivier Benghozi (May 24)
- Re: Juniper BGP Convergence Time Vincent Bernat (May 24)
- Re: Juniper BGP Convergence Time Olivier Benghozi (May 24)