You don't need to ask your customers to change their configuration, but you do probably need to continue to pass them fulls so you need fulls from your upstreams.
To better control your 'backup' link: 1)To better control your outbound use local pref, but beware you might recieve some prefixes unique to the view of the backup provider. You'll need to do something else to cover that up or hope the usage is in the noise. 2)To better control your inbound you just need to use methods which will get the backup provider to not prefer that link and thus not advertise it to anyone else. Your AS path prepend isn't doing the job. Likely they set the customer link to have a higher local pref and the traffic you see is from the backup provider, it's customers, and probably peers(since many set local pref on peers higher than transit providers) of backup provider(who don't peer with other provider). Most providers which prefer customer links provide community structure to control advertisements use as backup.(standard customer, customer backup(customer with 2 links), customer fallback(if no other path is available)). Darrell Alejandro Acosta wrote: > > Well, In fact I have had ultil 3 simultaneos links to Internet working very > well. The idea of only have one primary link and one backup link is for > saving costs. Addionally I have many customers talking to me BGP. At this > moment I can not ask to my clients to change their BGP configutarion. > > Any idea? > > Alejandro Acosta > > > > -----Original Message----- > From: Thomas Crowe > To: [EMAIL PROTECTED] > Sent: 28/01/02 12:45 > Subject: RE: BGP and one backup link [7:33433] > > Why not just use floating static routes? With only one active exit > point, I > don't see the reason for burdening your router with the BGP routing > table, > unless you are just receiving aggregates from your provider. Even then > the > floating static's should work. > > ______________________________ > > Thomas Crowe > Senior Systems Engineer / Architect > CTS Professional Services - Atlanta > ______________________________ > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > Sent: Monday, January 28, 2002 10:36 AM > To: [EMAIL PROTECTED] > Subject: BGP and one backup link [7:33433] > > Hi all, > I have a BGP question. > In this moment we have one Internet link with just one provider, now, > we > have got a second link just for backup. I mean, we can only use it for > 180 > hrs per month. > I can easily manage my outgoing traffic (using local preferece or > weight), > however the incomming traffic in more difficult. I added many prepends > (9) > in the publication of the second link but there still few traffic on it. > There is not IBGP between my two providers. > > Any ideas? > > Thks in advanced. > > Alejandro Acosta > > [GroupStudy.com removed an attachment of type text/x-vcard which had a > name > of Thomas Crowe.vcf] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=33454&t=33433 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
