> > > Question: Should AS7018 on receiving the communites from AS1239 and AS701 > > set the desired local pref?? > > Why not?? > > What am I missing? > > Please advise. > >My read on it ( after checking Halabi's and Stewart's books ) is that >LOCAL_PREF is typically set on the inbound side, not with the outbound side. >LOCAL_PREF is an optional attribute. You don't want others to be able to >impose their criteria on you.
This is actually a real world scenario. In an ISP network, I want control of everything. Letting customers influence their flows (or peers or anyone for that matter other than me) makes me nervous. For these reasons, even though it may be safe to use it, I'd zero all inbound meds. However, I may want to allow a customer some controlled flexibility, so I give them a few communities to strap on routes that will influence my pref setting. This is what CN is referencing. ATT might give you 7018:90, 7018:80 and 7018:100 to use which they will honor with LPref settings on their end (of 80,90 and 100 in this case). In this way, as the ISP, you give the customer the ability to influence your exit decisions, but you do it on your terms. Pet >also - are you remembering to use the bgp send-communities switch? This, or buggy IOS that itself might have overlooked this setting would be my guess. > > > > Thank you. > > Sincerely, > > CN > > > > > > > > > > > > >_________________________________________________________________ > > Add photos to your e-mail with MSN 8. Get 2 months FREE*. > > http://join.msn.com/?page=features/featuredemail Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66002&t=66002 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
