True, getting a AS for a /27 could be quiet a challenge, and even harder trying to convince your bgp peers to advertise that. Fortunatley, I know play with a /16 and a /19. BUt when I was contracting for another compnay, I managed to get an AS for a /24, and get our peers to advertise it (was factored into out monthly bandwidth charges though).
I know that there are some "hacks" out there that increase the intelligence of DNS servers, so that may still be an option. It depens on what SLA's you have to meet. Obviously the more strict your SLA requirements, the more cricital services are, and more likely the higher your budget. Anyways, moving away from the if and whens etc, lets look at possible solutions. Initially I thought what about NAT, but you can't have a many-to-one inbound nat, so we can't really do much with NAT. The only other option I can think of, (cheaply) ...see if you can get a /30 from each of the providers and use this for your WAN links to them, (of see if they would support IP unnumbered, although personally I am not a fan. This would mean that you could have both /27's for use on your "internal" ethernet, just as you suggested having one as a primary and the other a secondary. Hope this makes sense? Andrew Dorsett wrote: > > On Wed, 5 Mar 2003, Mark W. Odette II wrote: > > > Can you even obtain an AS for BGP without a full Class C > block of your > > own?? > > Mark - > It doesn't matter how much IP Space you have to get an ASN. > You have to > meet ARIN guidelines. Those are > 1. A unique routing policy. > 2. A multi-homes site. > http://www.arin.net/policy/asn.html > > But, you do have to convince your peers to advertise your small > routes. > That's the hard part. A lot of places don't like carrying /27 > blocks > around in their tables. > > Andrew > --- > > http://www.andrewsworld.net/ > ICQ: 2895251 > Cisco Certified Network Associate > > "Learn from the mistakes of others. You won't live long enough > to make all of them yourself." > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=64587&t=64469 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
