--On 07 June 2004 17:50 -0400 Valdis.Kletnieks@vt.edu wrote:
Well, either you have one per POP (and that, as Randy Bush points out, can be quite the headache in itself), which is still a single point of failure for that POP, or you're advocating that the routers be reachable from the magic box at *any* POP (which is right back into the "large number of machines" issue....)
Well the way we did it, all routers were accessible from 2 (large) POPs, two being in the NOC, and one being elsewhere (now you mention it, it was a datacenter & POP combined). So the "large" number of machines was 3. I am sure we could have scaled this to (say) 4 without substantial difficulty. I agree one in every POP would be both painful and pointless. But that wasn't what I meant. Alex