Re: [c-nsp] When will SFP+ 10GBase-T optics be available?
On 20/04/2012 12:48, Mark Berly wrote: On Fri, Apr 20, 2012 at 6:42 AM, Phil Mayersp.may...@imperial.ac.ukwrote: Intel is starting to ship with 1/10GBASET LOM IMO this will push the market to BASET, that and the cost is radically less. If you add up the SFP+ optics and cabling costs these are easily more than many ToR Yes. That is a popular, but in my experience not majority, opinion. As I said: at this point, I don't think there is consensus. Obviously you will disagree ;o) The cost savings for 10GBASET is not an opinion it radically changes the economics of 10GbE and it does allow for 100M/1G/10G connectivity helping simply choices for ToR switches (one switch can do all of the above). I do agree it is not a consensus as to the 'best' technology but IMO 10GBASET will drive 10G adoption to the masses, with processor speeds increasing the bottle has moved from the CPU/memory subsystems of the server to the network I/O. In order to compensate people are going multiple 1G or single/dual 10G when it is cost neutral to deploy 10G instead of 1G it is a no brainer and with 10GBASET we are at that point. This year we moved to 10GbE and we bought a complete 10GBASE-T solution due to it being cost effective and allowing us to keep older machines until phased out or upgraded we could also plug in the 100M PDUs. We upgraded the core switch and 14 ToRs replacing 7 cat5e bonded links with 2 redundant cat6a per ToR between them (with fiber due to the cost I would think twice before putting in a redundant link). For me too 10GBASE-T is indeed a no brainer for who is upgrading now. cheers alessandra switches. Also there are dense 10GBASET switches that can run at line rate and drive distance to ~100M, since this is a Cisco focused mailer I will leave company names off... Why? Feel free to name names. Arista Networks makes a 64 and 52 port 10GBASET switch (48x100/1/10G with either 4x10GbE SFP+ or 4x40GbE QSFP+) - in the sake of full disclosure I do work for Arista (after a long stint @ Cisco) hence the reason I did not want to disclose names initially but since you asked ;-) My understanding was never, based on vendor discussions. Specifically, I believe the SFP+ is unable to provide sufficient power to drive a 10GbaseT, full stop. While the BER is a bit higher on BASET the above can be done today Do you mean it's possible to purchase a 10GbaseT SFP+ today? From whom? Sorry my reply was not clear vendors can drive 10GBASET but NOT with SFP+, to your point its a power issue. I would not hold my breath waiting for 10GBASET in an SFP+ form factor ___ 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] in praise of the cat6500 Re: Flow tools
Sup2T was because the Sup720 is already 6 years old and I don't know if it is going to last another 6 years. That's why I decided to ask on this thread. You all seem pretty enthusiast about it. On 21/01/2012 00:33, Phil Mayers wrote: On 01/20/2012 10:11 PM, Alessandra Forti wrote: The 6[78]16 cards are only 40g. Each 4 port group has 10g. We have some, and frankly they're a bit awkward because of this. the 6[78]16 are the only 10GBASE-T though and I'm trying to keep it simple. If you want it to last 6 years, I think buying the 6716 is the wrong call. If you do buy the 6716, the sup2T is overpowered. Maybe you need the new features, but you said throughput and minimal routing, so maybe not. If it were me, I would get a sup2T and 6908 linecards, and use a distribution switch with fibre uplinks and 10GbaseT ports down. The Extreme x650 is a very cheap option for the latter. My advice would be to think hard about 10GbaseT restriction though. ___ 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] in praise of the cat6500 Re: Flow tools
Hi, I got some money to upgrade my network infrastructure from 1Gbps to 10Gbps. At the moment I have a cat6509E with a Sup720. This system has been working fine for 6 years. The upgrade will have to last a similar number of years and our main requirement is throughput with minimal routing if we are going to double the link to the outside world. My initial combination to support 16 racks at 10Gbps was to simply buy 4x6716-10T-3C blades and keep the Sup720. I then got enough money to upgrade the Sup720 to a Sup2T with (6816-10T-2T blades). I was wondering if this is really necessary or if the Sup720 will last that long i.e. another 6 years. I'm not an expert and would appreciate your comments if I go down this route because the alternative is to replace the 6509 altogether (most likely with a Force10 Z9000). thanks cheers alessandra On 20/01/2012 16:38, Phil Mayers wrote: On 01/20/2012 02:23 PM, Jeff Bacon wrote: So I don't. It makes for an interesting network in a way, because I am taking 2-3 layers and collapsing them all into one switch - but I can because the 6500 lets me, and lets me do it so trivially easy. We do much the same. I love my 6500s. You'll pry 'em from my cold dead fingers. Unless someone really does show me something that can do what they do better. We're about to roll the dice on that one... I'll let you know how it goes! The ITT is still in progress, and I got a lot of comments from vendors about damn these are hard requirements to meet. And yet most of them were a re-statement of the capabilities of the sup720... ___ 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] in praise of the cat6500 Re: Flow tools
The 6[78]16 cards are only 40g. Each 4 port group has 10g. We have some, and frankly they're a bit awkward because of this. the 6[78]16 are the only 10GBASE-T though and I'm trying to keep it simple. cheers alessandra ___ 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] in praise of the cat6500 Re: Flow tools
How far do you plan to expand in the next 6 years? We currently have 10 racks and planning to add another two in the next 3 months. Considering the density of cpu power is increasing I calculated around 16 racks in the next 6 years. The rack switches will also be 10GBASE-T. This allows me more flexibility during the upgrade because I don't have to do a big bang upgrade since they are auto-negotiating. ___ 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/
