On 19 December 2016 at 15:52, <adamv0...@netconsultings.com> wrote: Hey,
> To be perfectly honest with you, I'd recommend PTX only if you know exactly > why you need what this platform has to offer. If the answer is I don't > know/don't care/or can live with MX limitations, then there's no need to > waste the money on the premium product and you'd be fine with MX or maybe > even QFX. (though if you are considering MX960 I'd recommend ASR9k instead, > but again, only if you can justify the extra cost). > > I think PTX can be compared fairly only to CRS-X or NCS6k. (high-end P-core > boxes) > And QFX can be compared to NCS5K (high-density dumb MPLS SW) Obviously there are many ways to look at things. And there is modest way to help someone choosing platform without knowing the requirements. But I do disagree with virtually all these points. 'can live with MX limitations', is odd thing to say, considering MX is NPU/run-to-completion, it can do everything, in due time. What limitations does it have over PTX? Whole value proposition of PTX is if you don't need all MX functionality, but you need density or better watt or dollar per Gbps. PTX is cheaper, stupider box. Of course if you don't need the density and PTX port utilisation is poor, then it'll be expensive stupid box. When you talk about QFX, I wonder what QFX you mean. For Internet use only QFX10k makes sense, rest of them do not have port buffers for Internet requirements. And QFX10k is literally same box as PTX1k, with half the control-plane DRAM. Any differences presented are purely marketing. Granted it seems QFX10k is being marketed and small-FIB PTX1k. ASR9k right now should be approached with caution, only Tomahawk is supported in XRe and not all interfaces you might be interested have Tomahawk card out. There is also new architecture in horizon, both new architecture and XRe are opportunities, but they are also risks. CRS-x is NPU/run-to-completion, so it's much closer to ASR9k/MX then pipeline based PTX/NCS. I agree that PTX/QFX10k compare against NCS5k. -- ++ytti _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp