I don't think the fact that Cisco has not yet *officially* joined the TCG amounts to anything. Microsoft (see below) has already a long time ago announced compliance with the open standards TGC solution...which leaves Cisco as the only one of the *big three" out.
The fact of the matter is that all these architectures, no matter which one will prevail, will leverage TPMs. And in a network of these proportions it would be downright silly to expect TPMs of one vendor only. So the *interoperability factor* across TPMs and management of the keys is the interesting thing. And only Wave offers the TCG enabled toolkit to eaily integrate these functions into each vendor specific solution.
Cisco has announced, a couple of years ago, that their solution would leverage the IBM client side security chip (TPM) - which proves the above point - but it would be downright silly to expect them to only want to stay with that particular solution...JMO!
TRUSTED COMPUTING GROUP’S TRUSTED NETWORK CONNECT (TNC) AND MICROSOFT’S NETWORK ACCESS PROTECTION ARCHITECTURES TO BE COMPATIBLE
Open Industry Effort for Endpoint Integrity Will Support Multi-Vendor Network Environments
PORTLAND, Ore., April 20, 2005 – The Trusted Computing Group (TCG), developer of open specifications to help vendors build products that protect critical data and information, today announced that Microsoft’s Network Access Protection (NAP) is planned to be architecturally aligned and interoperable with TCG’s Trusted Network Connect (TNC) specification.
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