I don't think you could advertise 128.160.1.x to 128.160.150.x with a single route. You would have to advertise on the subnet boundary such as 128.160.0.x to 128.160.127.x and 128.160.128.x to 128.160.255.x. Then it's a fairly simple distribute list out to the respective neighbors like this: router bgp 65535 ! !<standard BGP stuff> ! neighbor 1.1.1.1 remote-as 1 neighbor 1.1.1.1 distribute-list 5 out neighbor 2.2.2.2 remote-as 2 neighbor 2.2.2.2 distribute-list 6 out ! ! ! ! access-list 5 permit 128.60.128.0 0.0.127.0 access-list 6 permit 128.60.0.0 0.0.127.0 At least that's what we do here. -----Original Message----- From: Oleh Hrynchuk [mailto:[EMAIL PROTECTED]] Sent: Monday, June 05, 2000 10:18 AM To: [EMAIL PROTECTED] Subject: Re: BGP ? Chris Allen wrote: > > Yes you can!!! I am going to assume that each AS is a different ISP??? So > the only thing keeping you from doing this would be ISP guidelines, some > ISP's might not want you to advertise like this. > > You will have to disable automatic route summarization.... > no auto-summary > OK. And, in this case, how will you advertise those two sequences of IP-addresses? I mean the "network ..." command. Since they aren't ^2-sequences... > Pros and Cons.... > > All the Pros are for you!! You get to have a network broken up and better > use of IP addresses.... > > The Cons fall on the ISP's and the Internet, they lose the abillity to > summarize routes so there is now one more route on the internet backbone. > > Chris - CCNP > > Ronnie Tootle <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Can you take a class "B" address, split it in half, and advertise each > > half from two different AS's using BGP version 4? If so, what are the > > pro's and con's? > > > > thanks > > > > > > example: > > > > 128.160.1.x to 128.160.150.x --AS 4857 > > 128.160.151.x to 128.160.255.x--AS 5898 > > > > ___________________________________ > > 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] > > --- > > ___________________________________ > 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] > --- -- Tel.(w.): +4202 96159438 Fax: +4202 96159422 Mobile: +4206 03583619 SMS: [EMAIL PROTECTED] ___________________________________ 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] ___________________________________ 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]
