Page 929 - Cloud computing: From paradigm to operation

Intercloud and interoperability 5

infrastructure. Governance elements include registration, geo-independence, trust anchor, and potentially
compliance and audit. The standard does not address intra-cloud (within cloud) operation, as this is cloud
implementation-specific, nor does it address proprietary hybrid-cloud implementations.

Public access Public access

Public cloud Public cloud

Intercloud root

Intercloud exchanges
Public cloud Private cloud

Public access
Internal user access
Q Suppl.65(14)_F5-1

Figure 5-1 – Reference network inter-cloud topology

(Reference: IEEE Cloud Computing Initiative: http://cloudcomputing.ieee.org/intercloud)

Table 5-4 – IEEE documents and work items related to CCI

Reference Name/Title Status

IEEE P2301 Guide for Cloud Portability and Interoperability Profiles (CPIP) In process
IEEE P2302 Standard for Intercloud Interoperability and Federation (SIIF) In process
Another area IEEE plans to explore involves developing environments for creating and testing protocols for
the IEEE P2302 Draft Standard for intercloud interoperability and federation. IEEE has partnered with
universities and research institutions around the world that already have cloud computing resources. The
goal is to create a well-connected standards-based platform.

5.1.5 IETF
The IETF is an international organization that develops standards and specifications applicable to the
Internet.

IETF works on cloud computing interface, and testing methodology related aspects of CCI Cloud related
working groups are:
• IETF/l3vpn (Layer 3 Virtual Private Networks);

• IETF/oauth (Web Authorization Protocol);
• IETF/scim (System for Cross-domain Identity Management);
• IETF/ippm (IP Performance Metrics).
The L3VPN, OAUTH, system for cross-domain identity management (SCIM) working groups work on cloud
computing protocol related aspects of CCI.
The L3VPN working group is responsible for defining, specifying and extending BGP/MPLS IP VPNs solutions
for supporting provider-provisioned L3VPN.

The OAUTH working group develops OAuth for authorization. OAuth provides client applications a 'secure
delegated access' to server resources on behalf of a resource owner.

The SCIM working group is developing SCIM specification that is designed to make managing user identity in
cloud based applications and services easier.

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