[c-nsp] XFP, SFP+, ???
So, I am looking at doing DWDM for some mid-haul passive-splitter links around NYC metro - working with a carrier that's buying dark and offering to hand me lambdas off passive splitters. I'm going to need to punch enough power to go 20-40km + losses in the passive splitters. Do I need to look at SXI + SIP-400 + SPA to go XFP? Am I better off with a 6704 to get XENPAK even tho it's not the best board in the known universe? Or do I go with X2 tuned optics? Effectively, what's the cheapest practical option, assuming I need no more than 4 ports per 6500 and don't have 1 slot available? (I have physical space constraints, I mostly work with 03E and 04E chassis) Thanks, -bacon ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] XFP, SFP+, ???
So, I am looking at doing DWDM for some mid-haul passive-splitter links around NYC metro - working with a carrier that's buying dark and offering to hand me lambdas off passive splitters. Did you consider an active unit before you go running in vendor coloured pluggable compatability issues (which technically should be few and far between now cisco have pulled their finger out) http://www.nanog.org/meetings/nanog42/presentations/pluggables.pdf is a good presentation from nanog42 with regards to pluggables. I see you have 6500, but you make no mention of 1G or 10G being your requirement, if you meant 10G then I assume this means you are thinking of WS-X6704/8 and in such case you can /technically/ get hold of coloured xenpaks (I believe opnext manafacture these) but I would personally not waste my money here. If 1G, your options are more open, plenty of people manafacture coloured SFPs which are cisco compatible Dave. Jeff Bacon wrote: So, I am looking at doing DWDM for some mid-haul passive-splitter links around NYC metro - working with a carrier that's buying dark and offering to hand me lambdas off passive splitters. I'm going to need to punch enough power to go 20-40km + losses in the passive splitters. Do I need to look at SXI + SIP-400 + SPA to go XFP? Am I better off with a 6704 to get XENPAK even tho it's not the best board in the known universe? Or do I go with X2 tuned optics? Effectively, what's the cheapest practical option, assuming I need no more than 4 ports per 6500 and don't have 1 slot available? (I have physical space constraints, I mostly work with 03E and 04E chassis) Thanks, -bacon ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] XFP, SFP+, ???
I see you have 6500, but you make no mention of 1G or 10G being your requirement, if you meant 10G then I assume this means you are thinking of WS-X6704/8 and in such case you can /technically/ get hold of coloured xenpaks (I believe opnext manafacture these) but I would personally not waste my money here. If 1G, your options are more open, plenty of people manafacture coloured SFPs which are cisco compatible Desire is for 10G. If I wanted 1G I can just have the carrier give me switched enet and not bother with any of the fuss. I could temporarily use 1G colored SFPs but that's IMO a throwaway. The bandwidth requirement is for 1G X 10G; primarily bursting to 3-5G with well under 1G average for now, eventually the average will come up but that's 6mo-1yr+. Policing the streams to fit in a 1G pipe is not an option; the bursts have to get through and dropping packets is not acceptable. 6708 uses X2, yes? Or are we considering XENPAK/X2 interchangeable from the POV of buying colored optics? Using an external box to condition the wave is an option but now I'm paying bux for the colored optics in the box, plus the box, plus the 10G to get into the 6500, which seems like a net big lose. -bacon ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] XFP, SFP+, ???
On 20/10/2009 15:55, Jeff Bacon wrote: Using an external box to condition the wave is an option but now I'm paying bux for the colored optics in the box, plus the box, plus the 10G to get into the 6500, which seems like a net big lose. The advantage that this gives you is that you don't end up paying for coloured xenpaks or X2s (both of which are ridiculously expensive), and you do end with a transmission system which is completely vendor and transceiver independent. Cheap is a fluid concept. Are you measuring cheap according to up-front capex right now, or by 1Y / 3Y / 5Y tco or whatever your depreciation time period is, or by reusability if you change from one client transceiver type to another? Nick ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] XFP, SFP+, ???
On 20/10/2009 15:55, Jeff Bacon wrote: Using an external box to condition the wave is an option but now I'm paying bux for the colored optics in the box, plus the box, plus the 10G to get into the 6500, which seems like a net big lose. The advantage that this gives you is that you don't end up paying for coloured xenpaks or X2s (both of which are ridiculously expensive), and you do end with a transmission system which is completely vendor and transceiver independent. Well, yer always dependent on _some_ vendor - be it Cisco, opt-whoever, or whoever's making your external box. I suppose if you're avoiding XENPAK/X2 and trying to go XFP, then your XFP is theoretically portable. (Though you could fork for a SIP400 and the 10G SPA and then be XFP-happy.) Cheap is a fluid concept. Are you measuring cheap according to up-front capex right now, or by 1Y / 3Y / 5Y tco or whatever your depreciation time period is, or by reusability if you change from one client transceiver type to another? Up-front capex, 2yr TCO (though in the given case I'm not sure what else factors into TCO besides the MRC of the fiber path and cost of rack space). It feels like a crap-shoot on XFP / SFP+, with reach issues on the SFP+ that could be an issue. From the docs Peter kindly posted earlier, it appears Cisco is planning to cope with SFP+ with the CVR-X2-SFP10G OneX X2-SFP+ adapters. Doesn't help now b/c it's SR/copper only, but I'd be surprised if this didn't get fleshed out. ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] XFP, SFP+, ???
On Tue, 20 Oct 2009 10:56:02 -0500, Jeff Bacon wrote It feels like a crap-shoot on XFP / SFP+, with reach issues on the SFP+ that could be an issue. From the docs Peter kindly posted earlier, it appears Cisco is planning to cope with SFP+ with the CVR-X2-SFP10G OneX X2-SFP+ adapters. Doesn't help now b/c it's SR/copper only, but I'd be surprised if this didn't get fleshed out. Well, the biggest problem with SFP+ is, no DWDM nor 80 km version exists today and noone knows when (if at all) this will be available. As for the adapter, an X2-XFP is also doable and would help many customers, but it's apparently not planned... With kind regards, M. ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] XFP, SFP+, ???
On Tue, Oct 20, 2009 at 09:14:26AM -0500, Jeff Bacon wrote: So, I am looking at doing DWDM for some mid-haul passive-splitter links around NYC metro - working with a carrier that's buying dark and offering to hand me lambdas off passive splitters. I'm going to need to punch enough power to go 20-40km + losses in the passive splitters. Do I need to look at SXI + SIP-400 + SPA to go XFP? Am I better off with a 6704 to get XENPAK even tho it's not the best board in the known universe? Or do I go with X2 tuned optics? Effectively, what's the cheapest practical option, assuming I need no more than 4 ports per 6500 and don't have 1 slot available? (I have physical space constraints, I mostly work with 03E and 04E chassis) SIP/SPA or ES cards are horrifically overpriced if all you want to do is use XFP. You can find DWDM XENPAKs which work just fine, but they're quite pricey if you get them new, and in limited quantity if you want to find them used. If you only need a pair of DWDM optics you're probably fine to find a used or third party XENPAK to meet your needs, and this will be the cheapest option. If you actually have to buy these things in any kind of quantity (i.e. hundreds+) you're probably going to want to go XFP purely for availability and lead time. Your best (or atleast cheapest, but I can't say anything bad about them other than they don't do FEC like some similar higher priced/lower density converters) bet if you need an external converter to run DWDM XFP line side and LR client side is the MRV 2XFP repeater in a Fiber Driver chassis. http://www.mrv.com/datasheets/FD/PDF300/MRV-FD-2XFP_HI.pdf -- Richard A Steenbergen r...@e-gerbil.net http://www.e-gerbil.net/ras GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC) ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
