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On Mar 24, 2011, at 12:42 PM, Zaid Ali <z...@zaidali.com> wrote: > I have seen age old discussions on single AS vs multiple AS for backbone and > datacenter design. I am particularly interested in operational challenges for > running AS per region e.g. one AS for US, one EU etc or I have heard folks do > one AS per DC. I particularly don't see any advantage in doing one AS per > region or datacenter since most of the reasons I hear is to reduce the iBGP > mesh. I generally prefer one AS and making use of confederation. > > Zaid If you have good backbone between the locations, then, it's mostly a matter of personal preference. If you have discreet autonomous sites that are not connected by internal circuits (not VPNs), then, AS per site is greatly preferable. Owen
