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VIRTUALISATION All power to the network
VIRTUALISATION All power to the network | All power to the network |
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| by Stuart Corner | |
| Saturday, 12 April 2008 | |
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In essence, according to Cisco, the way the processor and the ASR1000 works is this: as each data packet enters the ASR1000 the QuantumFlow processor inspects it and according to what it has been instructed to do for the service to which that packet belongs is able to assign to one or more of its 40 processors the task of dealing with that packet accordingly. For example: does it belong to a high-level HDTV service which means that it has to be given high priority and charged at a high rate? Is it peer-to-peer traffic trying to get through at peak times when the service provider has decided that peer-to-peer should only be allowed through at off peak? And so on and so forth. This means that the ASR1000 is much more than an edge router. It has been designed to implement in software many functions needed at the edge of the network that normally require dedicated hardware - either separate boxes or dedicated processor cards. Functions supported include firewall, IPSec VPNs, deep-packet inspection and session border control. All these are provided, according to Cisco, through software virtualisation enabling 'instant-on' provisioning, and all are run off the QuantumFlow chip. CONTINUED |
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