On Mon, Jan 28, 2008 at 11:07:13PM -0500, David Prall wrote: > It uses SFP+'s, they supposedly will be available in both 1GE and 10GE.
While the move to SFP+ for the Nexus7000 is clearly the only solution (datacenter needs high density & low cost 10GE links and Nexus has the potential for 500 Gbps per slot), the SFP+ datasheet says it will also be adopted in Cat6000/4000/3000 series. Could someone please explain the motivation for this? From the customer's perspective, it's a nightmare to see fourth different 10GE form factor coming into e.g. Cat6500, especially when XFPs were already used on 10GE SPAs and ES20 cards. Consolidation on XFP form factor would be IMHO much better for several reasons: - it's also XFI-based - all types are available *now* (including CX4, ZR and DWDM which are not planned for SFP+) - supports both LAN and WAN PHY - offers sufficient port density (24) for 80 Gbps per slot backplane - has the widest adoption rate as it's used in SONET/SDH, DWDM and ethernet equipment - is subject to continuos inovation (tunable XFPs, ultra long reach XFPs etc.) Any thoughts/comments? With kind regards, M. -------------------------------------------------------------------------- ---- ---- ---- Marian Ďurkovič network manager ---- ---- ---- ---- Slovak Technical University Tel: +421 2 571 041 81 ---- ---- Computer Centre, Nám. Slobody 17 Fax: +421 2 524 94 351 ---- ---- 812 43 Bratislava, Slovak Republic E-mail/sip: [EMAIL PROTECTED] ---- ---- ---- -------------------------------------------------------------------------- _______________________________________________ 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/