Re: BGP study question

[Nigel Taylor]

OK, Let's see if my reading serves me correctly.  Using the MED attribute cannot be used here for the simple fact that there is only one connection between  each pair of ASs. Yes, the MEDs is non-transitive but it's real/only use is between a pair of AS that are directly connected in more than one place.  Now knowing that you would prefer that routerB to use routerC this preference can be set using your LOCAL-PREF. Of course the result is that the higher the value the more preferred the route. The point to note here is that this preference could be established through an E-BGP, IGP, or a static configuration.   HTH'd, it sure helped me clear up some areas in my thought process.  The CertificationZone has a 3 part paper on BGP written by Howard B.(The BGP Master) as Priscilla pointed out in an earlier post.  A subscription there will only aide in your battle to master this beast as well it's the only way you'll get the luxury of being able to read all three Papers.     *hint, hint*   Nigel..  - CZ subscriber..!      ----- Original Message ----- From: John Kaberna To: [EMAIL PROTECTED] Cc: Kristopher B. Climie Sent: Friday, September 15, 2000 8:28 AM Subject: Re: BGP study question Its pretty simple actually.  Basically they both accomplish the same thing.  But the local pref is exactly that.  Local to the AS.  MED values are carried in to the next AS.  But, when an AS receives a MED value it does not propogate that value to other AS's.  Maybe someone else can explain it a little better.        John     Kristopher B. Climie <[EMAIL PROTECTED]> wrote in message news:B5E6AFD0.28AB%kris@climiecc... > Here is a question I am just going to throw out there: > > > Look at the example below.  Router B has two connections out of its network > to router D, one through router A and router C.  All are running eBGP.  What > is the best way to get Router B to use Router C, using the MED or the > Local_Pref?  Why? > > > >           <D> -------------- <C> >            |                            | >            |                            | >            |                            | >           <A>---------------<B> > > **NOTE: New CCNA/CCDA List has been formed. For more information go to > http://www.groupstudy.com/list/Associates.html > _________________________________ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]