nanog mailing list archives
Re: consistent policy != consistent announcements
From: David Schwartz <djls () gate net>
Date: Thu, 13 Mar 1997 15:55:05 -0500 (EST)
Consider the case where a customer has two AS numbers and uses one for his East Coast operations and one for his West Coast operations. Since he only purchases transit, he can use his Internet connections to back up his coast-to-coast link, which he normally prefers. Suppose he has connections to a particular backbone on both coasts and wishes nearest exit to be used. At MAE-E, this backbone will prefer the East Coast AS to reach his IPs. At MAE-W, this backbone will prefer the West Caost AS to reach his IPs. The BGP advertisements this backbone will make to its peers will be 'inconsistent' but also 'optimal'. DS On Thu, 13 Mar 1997, Henry Kilmer wrote:
Vince Fuller writes:I can see why you present inconsistant routes to us but I'm not sure that I understand why you'd prefer a customer prefix via a direct connection to them at one point in your network but via a connection to another provider at a different point in your network. That would seem internally inconsistant to me. Is this deliberate behavior to do shortest-exit within your network toward your customer?We have some customers that have specifically requested this sort of arrangement. -Hank
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Current thread:
- Re: consistent policy != consistent announcements, (continued)
- Re: consistent policy != consistent announcements John W. Stewart III (Mar 13)
- Re: consistent policy != consistent announcements Vadim Antonov (Mar 13)
- Re: consistent policy != consistent announcements Tony Barber (Mar 13)
- Re: consistent policy != consistent announcements Randy Bush (Mar 13)
- Re: consistent policy != consistent announcements Tony Li (Mar 16)
- Re: consistent policy != consistent announcements Sean Donelan (Mar 13)
- Re: consistent policy != consistent announcements Randy Bush (Mar 13)
- Re: consistent policy != consistent announcements John Scudder (Mar 13)
- Re: consistent policy != consistent announcements Vince Fuller (Mar 13)
- Re: consistent policy != consistent announcements Henry Kilmer (Mar 13)
- Re: consistent policy != consistent announcements David Schwartz (Mar 13)
- Re: consistent policy != consistent announcements the Riz (Mar 13)
- Re: consistent policy != consistent announcements Henry Kilmer (Mar 13)
- Re: consistent policy != consistent announcements Vince Fuller (Mar 13)
- Re: consistent policy != consistent announcements Henry Kilmer (Mar 13)
- Re: consistent policy != consistent announcements Vince Fuller (Mar 13)
- Re: consistent policy != consistent announcements David Schwartz (Mar 13)
- Re: consistent policy != consistent announcements Alan Barrett (Mar 13)
- Re: consistent policy != consistent announcements Randy Bush (Mar 14)
- Re: consistent policy != consistent announcements Alan Barrett (Mar 14)
- Re: consistent policy != consistent announcements John Scudder (Mar 14)
- Re: consistent policy != consistent announcements David Schwartz (Mar 13)
- Re: consistent policy != consistent announcements David Schwartz (Mar 14)