I'm not certain on this one but assuming the same logic I'd say that the advertisement for the prefix with the metric of next-hop changing would take place once, it would trigger a 10 minute countdown, and if there is another change in the metric within the countdown it would send new advertisement with the new metric at the end of the 10 minute interval.
>From BGP Command reference: This command will cause BGP to advertise a MED that corresponds to the IGP metric associated with the next hop of the route. This command applies to generated, IBGP-, and EBGP-derived routes.If this command is used, multiple BGP speakers in a common autonomous system (AS) can advertise different MEDs for a particular prefix. Also, note that if the IGP metric changes, BGP will readvertise the route every 10 minutes. ""cebuano"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Henry, > Thanks for the verification. Although I'd like to add another command > to the picture --- "set metric-type internal". > The documentation says "if the IGP metric changes, BGP will readvertise > the route every 10 minutes". > There is no mention how long BGP will readvertise the affected > routes. Any ideas? > > Thanks. > Elmer > ----- Original Message ----- > From: "Henry D." > To: > Sent: Monday, May 20, 2002 12:04 PM > Subject: Re: BGP's neighbor advertisement-interval command [7:44521] > > > > You're correct, however if there are route changes happening constantly > > you don't want the router to keep sending updates as it might exhaust the > > peers. > > The interval is used so there is a limit of how often the updates are sent > > regardless > > of how often the routes actually change. > > > > ""cebuano"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > Hi ,all. > > > Can someone give a better explanation about this BGP command > > > "neighbor advertisement-interval"? I know you can change the default > > > values of 30 sec for external and 5 sec for internal peers. > > > But I always thought that BGP sends routing updates ONLY when > > > something about the route changes, either an UPDATE or WITHDRAWN > > > message. Any explanation better than CCO or Parkhurst's is greatly > > > appreciated. > > > > > > Elmer Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44551&t=44521 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
