Customers who purchase T1/T3 service generate more revenue for the ISP, and although the difference may not justify the administrative overhead of adding a BGP customer, most do not request this. Some organizations (BEST Internet, before Verio gobbled them up, for example) charge an additional fee for BGP. They charged 500$/Mo.
Address space is also an issue. You cannot announce blocks smaller than /24 into global BGP and expect the results you want. Some networks are still filtering announcements smaller than /19 within some ranges, SprintLink for example, as they took steps years ago to counteract routing table growth, and this remains a problem even as routers become more powerful and memory gets cheaper. I do not know how the 6BONE scenario would work. It was a shot from the hip, I'm sure you could do some research in this area, or perhaps someone else subscribed to the list can tell us how the 6BONE interoperates with the current IPv4. If you had a colocated server on a reliable IP connection you could VPN yourself a subnet from it over either of your two DSL routes. This might be sane but would cause you to incur a lot of bandwidth bills. :-) - jsw -----Original Message----- From: Mike Fedyk [mailto:[EMAIL PROTECTED] Behalf Of Mike Fedyk Sent: Saturday, May 26, 2001 4:35 PM To: Jeff S Wheeler Cc: debian-isp@lists.debian.org; debian-firewall@lists.debian.org Subject: Re: Multiple DSLs, and switching incoming route upon failure? On Fri, May 25, 2001 at 11:29:46PM -0400, Jeff S Wheeler wrote: > Are your DSL uplinks from different ISPs, or from the same IP provider? If They are different providers. DSL 1 is 384k/1.5m adsl at pacbell dsl2 is 768k sdsl landmark (lmki) > they are differing providers, there is no way you can feasably implement > BGP. If they are redundant paths to the same ISP you could ask them to What do t1 and t3 customers do? Is the only criteria for "feasibility" a need for more IPs? > issue you a reserved ASN (65512 - 65535) and announce your /28 into their > network via ebgp sessions. That makes a lot of assumptions about software > support on your router(s), and of their willingness to accomodate you, of > course. I could get a second link to pacbell, but sometimes their entire network gets unstable, and I would still need a second provider. Doing the same with the other provider would require four links, and still wouldn't fix the problem if one ISP crashing completely. > > Realistically, you aren't going to make this happen. Perhaps you could > participate in something like the 6BONE, or simply colocate your obviously > mission-critical services at your ISP. > Hmm, I wonder how exactly this would work with the 6BONE. Can you get traffic from ipv4 into the 6BONE from the "normal" internet? How would I be addressed? I probably wouldn't choose my ISP then, I'd choose a company that connects to several ISPs, and that'll be more expensive. :( > - jsw > > Mike -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
