Quote:
Originally Posted by BradBreakfast
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CRS routers are really only good for MPLS core networks. Aggregation/edge platforms still run off of other devices such as the ASR9k line. Both run IOS XR. We run the asr9k line for our core and edge and 6500's for customer aggregation.
The only real difference between the ASR9k line and the CRS line is the amount of queues per port, the CRS has bigger/badder processor type line cards per interface card that handle the routing,distribution per port. Hence why the love for MPLS so much is needed for looking at the packets and figuring out qos/related within the mpls packets... hence why they are badass for large backbones.
Realistically no one cares/needs to run a CRS unless they are pushing 1Tbps or more across the globe.