On Wed, 6 May 2009, ChrisSerafin wrote:
I have a client that Cisoc is recommending the Nexus line of switches for
their data center. They will be using IBM blade switches and I'm guessing
these would be the 'core'.
They are looking at (2) Nexus 5010's and (2) Nexus 2000's.....totaling 60K.
I'm wondering why this would be recommended, since the only added feature of
the Nexus line from Cisco.com's video is that they have 10GB ports.....and
really nothing else.
I'm almost ready to recommend my favorites....3750G's for this scenario.
Anyone have real world experience wirking with these devices and can share
comments? good or bad, and why you went with them?
We don't have any yet, but we're looking at them.
Nexus 5000 pros (+) & cons (-):
+ front-to-back air flow
+ redundant power supplies & fans
+ high throughput (1.04 Tbps in 5020, 520 Gbps in 5010)
+ interface flexibility (due to SFP+ ports)
- have to buy an SFP/SFP+ module/cable for every port you want to light
- no 10/100; copper Ether is 1G only
- only first few ports (16 in 5020, 8 in 5010) can do 1G;
the rest are 10G only
The Nexus 2000 fabric extender also seems limited to 1G only; no 10/100.
Note that it isn't a normal switch, with port-to-port switching; all inbound
edge-port traffic is sent to the uplinks for switching by the host 5000 box.
This isn't necessarily a problem, but it is different.
It's a tough choice right now between established top-of-rack switches (3750,
4948, 4900m) & the Nexus boxes.
________________________________________________________________________
Jay Ford, Network Engineering Group, Information Technology Services
University of Iowa, Iowa City, IA 52242
email: [email protected], phone: 319-335-5555, fax: 319-335-2951
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