The real question: > > Are you selling customer links that are near to or equal to the size of > your core links(s). >
Why would anyone do this on purpose and not upgrade the core? I understand over-subscription but having your edge links the same speed as your core is just asking for trouble. > > Anyone doing 10GE edge or looking at 100GE for customer-facing handoffs can > save significant amounts of money by doing P/PE. While there are tradeoffs, > not having the cumulative cost of a packet being A+B+C and perhaps can be > localized to a single device has value. I'm surprised that Rolland doesn't > see this as an optimization as it would be something the Arbor equipment > could help you optimize. > Not sure how you save money by buying extra routers. That's a pretty aggressive discount structure. > > While some may see these cost savings as inelegant, the idea of a core will > continue to come under these pressures. Keep in mind the fraction of a > chassis you must allocate for these edge <-> core links and core <-> core > links. These have real world costs. There's a reason everyone didn't go > out there and load-up on OC768 hardware and just stuck with N*10G. The > finances don't work out. > Cards are cheaper than entire routers in most cases especially at N*10 and 40G speeds. Assuming you want chassis based, with redundant control planes and whatever the vendor uses for fabirc blades. I'm not saying everyone should throw their core P routers into a dumpster, but I don't see how having them saves money. You also have to add the cost of service contacts, power, fingers and eyes to keep them running, etc.. I think people who need separate cores should have them. However, I don't see how P routers save money or reduce complexity. > > - Jared > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
