Re: MPLS VPNs or not?

At one time, UUNET's traffic was simply outrunning the ability of L3 routers to keep up. Their choices were to:

That does invite a companion observation: at one time, I could reasonably guess that their traffic was outrunning the ability of Layer 2 ATM switches to keep up, as ATM switch vendors have lagged well behind the curve in OC48 and OC192 trunk capability, and IP router vendors haven't even put OC48 ATM linecards on the market. -travis