|
North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: metric 0 vs 'no metric at all'
On Tue, 3 Jan 2006, Alexander Koch wrote: > I was wondering if someone had done any or some research on this before... > basically I am not sure with all the many implementations of BGP and all the > vendors if and what those will do when they see a metric of 0 and no metric. I > am not an expert knowing the actual protocol's messages exchanged, but I see > some routes with nothing in the metric field on the various show commands, and > some have explicit '0' metric. > > I do not trust all the BGP implementations around, and we consider changing > the default outbound, with MEDs of course still available on request. i had this some time ago, cant remember where but i found some answers... basically no metric is undefined, and can be handled either as all-zero or all-ones or anything you want really the best practice was to set med manually to ensure the expected behaviour occurred. Steve
|