I would love to use the RSP720-3CXL, but cost and the PA OC3 are the difficulties.
If the RSP720s will run in a 6500 chassis, great! We wouldn't have to purchase new chassis and the increased downtime for the swap-out. RSP720 don't support the older bus-only FlexWAN either with the OC3 PA we're using, so we'd have to figure out a solution for that - SIPs, Enhanced FlexWAN, or external routers. Bah. ...the RSP720s + chassis + OC3 solution more than double our $20k/node budget, so that's a much tougher sell internally. -Dave 2009/5/15 Alex H. Ryu <r.hyuns...@ieee.org>: > Cisco 7304 may not adequate for service provider. > It's CPU/IO-controller is tied together, and doesn't provide much of > benefit. > > Cisco 7200/7300 is enterprise solution pretty much, and doesn't support > distributed CEF. > > If you are considering SUP720-3BXL, why not considering RSP720-3CXL ? > > Alex > > > Aaron Millisor wrote: >> We ran into a similar quandary and have about the same amount of >> traffic as your network. When purchasing gear a year ago we decided >> against 7200's with an NPE-G2 as insufficient for the load. Have you >> looked at the 7304? >> >> The Cisco 7304 with an NSE-150 processing engine on it offloads a lot >> of the packet processing to dedicated hardware, and doesn't have TCAM >> limitations for routes. You can hold several full feeds and do the >> amount of traffic you're talking about without breaking a sweat. >> >> http://www.cisco.com/en/US/prod/collateral/routers/ps352/prod_bulletin0900aecd8060aac5.html >> >> >> It is capable of supporting both legacy port adapters (from your >> Flexwan or 7200 routers) and SPA cards with the right add-in modules, >> which IIRC is only a few hundred dollars. >> >> I'd be glad to answer any questions you have about our implementation. >> >> --am >> >> David Storandt wrote: >>> We're stuck in an engineering pickle, so some experience from this >>> crew would be useful in tie-breaking... >>> >>> We operate a business-grade FTTx ISP with ~75 customers and 800Mbps of >>> Internet traffic, currently using 6509/Sup2s for core routing and port >>> aggregation. The MSFC2s are under stress from 3x full route feeds, >>> pared down to 85% to fit the TCAM tables. One system has a FlexWAN >>> with an OC3 card and it's crushing the CPU on the MSFC2. System tuning >>> (stable IOS and esp. disabling SPD) helped a lot but still doesn't >>> have the power to pull through. Hardware upgrades are needed... >>> >>> We need true full routes and more CPU horsepower for crunching BGP >>> (+12 smaller peers + ISIS). OC3 interfaces are going to be mandatory, >>> one each at two locations. Oh yeah, we're still a larger startup >>> without endless pockets. Power, rack space, and SmartNet are not >>> concerns at any location (on-site cold spares). We may need an >>> upstream OC12 in the future but that's a ways out and not a concern >>> here. >>> >>> Our engineering team has settled on three $20k/node options: >>> - Sup720-3BXLs with PS and fan upgrades >>> - Sup2s as switches + ISIS + statics and no BGP, push BGP edge routing >>> off to NPE-G2s across a 2-3Gbps port-channel >>> - Sup2s as switches + ISIS + statics and no BGP, push BGP edge routing >>> off to a 12008 with E3 engines across a 2-3Gbps port-channel. >>> >>> Ideas and constructive opinions welcome, especially software and >>> stability-related. >>> >>> Many thanks, >>> -Dave >> >> >> > >
