BGP and convergence time

Wed May 12 15:40:29 UTC 2010

On Wed, May 12, 2010 at 11:02 AM, Matthew Walster <matthew at walster.org> wrote:
> On 12 May 2010 02:36, Scott Weeks <surfer at mauigateway.com> wrote:
>> You set the timers on your side and the two sides negotiate then select the lowest timer settings.  The BGP session automatically hard resets on some equipment when changing the timers, so be aware of that.
>
> Hold timers are negotiated in the OPEN message, I seem to remember, so
> surely you *have* to hard reset the connection to get the lower
> holdtime?

I just tested this and, yes, with Cisco to Cisco, changing the setting
won't reset the connection but you have to reset the connection to
have the value take effect.  I need to look up what happens when two
sides are set to different values and which one takes precedent.