Juniper BGP Convergence Time

Wed May 16 00:28:01 UTC 2018

Have you checked your timeouts ?

-Ben

> On May 15, 2018, at 4:09 PM, Kaiser, Erich <erich at gotfusion.net> wrote:
> 
> Do you need full routes?  What about just a default route from BGP?
> 
> Erich Kaiser
> The Fusion Network
> erich at gotfusion.net
> Office: 815-570-3101
> 
> 
> 
> 
>> On Tue, May 15, 2018 at 5:38 PM, Aaron Gould <aaron1 at gvtc.com> wrote:
>> 
>> You sure it doesn't have something to do with 60 seconds * 3 = 180 secs of
>> BGP neighbor Time out before it believes neighbor is dead and remove routes
>> to that neighbor?
>> 
>> Aaron
>> 
>>> On May 15, 2018, at 9:10 AM, Adam Kajtar <akajtar at 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 port 20G
>>> lag. When one of the ISPs fails, it can take upwards of 2 minutes for
>>> traffic to start flowing correctly. The router has the correct route in
>> the
>>> routing table, but it doesn't install it in the forwarding table for the
>>> full 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 tried
>> Multipath)
>>>  - Any tips and tricks would be much appreciated
>>> 
>>> Thanks in Advance
>>> --
>>> Adam Kajtar
>>> Systems Administrator
>>> City of Wadsworth
>>> akajtar at wadsworthcity.org
>>> -----------------------------------------------------
>>> http://www.wadsworthcity.com
>>> 
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>> 
>> 