[AusNOG] BGP hold timer values

[David Hughes]

I gave a lightning talk about this sort of thing a while ago at an APRICOT.  I just googled to find the slides and can now see just how many years ago it was.  Gotta say I'm feeling old :)

But, it's probably still relevant although the defaults may have changed.  This reflected what we were running at the time - and we were trying to be pretty aggressive.

	http://archive.apnic.net/meetings/21/docs/sigs/routing/routing-pres-hughes-bgp.pdf

For reference I'm currently happy to run 

	eBGP	: 10 / 30
	iBGP	: 5 / 15

And I'd run this even to a single upstream.  If it fails at least you'll have something in your logs to say why you fell off the net for a while.  Silent failures are a bugger to troubleshoot.


Thanks

David
...



On 27/01/2015, at 6:47 PM, Alex Samad - Yieldbroker <Alex.Samad at yieldbroker.com> wrote:

> Hi
> 
> I'm wonder what is considered "best practice" or good/responsible hold timer values for BGP.
> 
> Currently I'm set at 3m, but I am considering lowering this to 30s and keep alive down to 20s, potentially even lower. Or if possible to use BFD & BGP, what's the uptake on BFD ?
> 
> Alex
> _______________________________________________
> AusNOG mailing list
> AusNOG at lists.ausnog.net
> http://lists.ausnog.net/mailman/listinfo/ausnog