Re: BGP AFI or SAFI for advertising BFD status

[Mark Tinka <mark@tinka.africa>]

On 12/22/24 14:15, Nick Hilliard wrote:

> As a separate issue, hold timers should generally be of a comparable 
> order of magnitude to the non-availability effect they're attempting 
> to mitigate. Inter-domain routing convergence is often measured in 
> minutes rather than seconds. So even if the protocol layer worked at 
> IXPs without causing control plane meltdown, it's still a mechanism 
> which which has a trigger timer two orders of magnitude faster than 
> the general case of DFZ reconvergence. I can't see that this would 
> help overall inter-domain routing stability.

I think this is the fundamental question.

BGP is stable and scales well given its global scope, not only because 
it turns like a tanker, but because we accept that it turns like a tanker.

Now, in a world of TikTok Brain and Uber Eats where we are used to 
getting what we want instantly, imposing that on to BGP, even if 
sneakily, is probably not something we want. At least not at a global scale.

Mark.