Re: few big monolithic PEs vs many small PEs

hey,

For availability I think it is best approach to do many small edge devices.

This is also great for planned maintenance. ISSU has not really worked out for any of the vendors and with two small devices you can upgrade them independently. Great for aggregation, enables you to dual-home access devices into two separate PEs that will never be down at the same time be it failure or planned maintenance (excluding the physical issues like power/cooling but dual-homing to two separate sites is always problematic for eyeball networks). -- tarko