On Thursday 13 March 2008, Amos Rosenboim wrote: > The exception to that is when the customer access circuit > is Ethernet based (and we see more and more of this). > In such situation what we do is put a layer 2 switch to > connect customer circuits, and connect two edge routers > to this switch. Then we either configure the customer > with two bgp sessions (one for each router) or do vrrp > between the edge routers and ask the customer to point > his 0.0.0.0/0 to the virtual address.
Right - this achieves Layer 3 redundancy, but not Layer 1 or 2. That notwithstanding, yes, it's better than nothing. Terminations not-of-an-Ethernet-persuasion are, however, left in a quagmire for single-homed customers. > The last point is that the new EX switches are the only > fixed configuration switches I know that comes with dual > power supplies and field replaceable fans. C also have switches that support field-replaceable fan trays as well as RPS (DC). Mark.
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