One of the main gating factors in the scaleability of a switch is the power of its management processor. When many switches are added to a SAN fabric, route calculations and other control-plane traffic can overwhelm individual devices -- and Cisco's results on the SRT supposedly demonstrate that its Fibre Channel switches can scale far beyond the competition.
On the other hand, Brocade, McData, and others can now point out that because Spirent's SRT test was developed by Cisco, it may favor the idiosyncrasies of Cisco's own switches. How many points Cisco ultimately gets out of this home-field advantage remains to be seen.
Todd Spangler, US Editor, Byte and Switch
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