The Nexus, which Cisco says will be available for sale in the second half of 2008, isn't the only next-generation network switch to target the data center.
He added that a number of campaigners were calling on policymakers and politicians to switch from a target-based policy to schemes that focused on carbon budgets.
The Carlisle boss also confirmed that former Queen of the South striker Stephen Dobbie was a target before his switch this week to Championship side Swansea City.