[c-nsp] Nexus 5K optimisation for iSCSI traffic

[Brad Hedlund (brhedlun)]

Note that the FEX will disable any port that receives a BPDU, by design in hardware.  You will need to disable STP on the blade-switch-to-FEX links for this to work. If it's Cisco blade switches you can use Flex Links.

Cheers,
Brad
http://bradhedlund.com

Sent from my iPad
(please excuse brevity, typos)

On Aug 5, 2011, at 6:08 AM, "Matthew Melbourne" <matt at melbourne.org.uk> wrote:

> Hi,
> 
> We're implementing two pairs of N5Ks (and downstream N2k FEXes) to act
> as separate iSCSI SAN fabrics, with SAN heads attached directly to
> N5Ks and host ports (and downstream integrated blade switches)
> connecting to the FEXes. Does anyone have any real-world experience of
> using N5Ks for a large iSCSI deployment. I have enabled jumbo frames
> through a network-qos policy-map as an obvious first-step, but wonder
> whether anything can be optimised by tuning buffer sizes to
> accommodate the bursty nature of iSCSI (etc)? This switches will only
> be switching iSCSI traffic.
> 
> Cheers,
> 
> Matt
> 
> -- 
> Matthew Melbourne
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