Cisco Cisco Identity Services Engine 1.0.4 Weißbuch

 

 

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Figure 1.    ISE Capabilities Bundling Strategy 

 

We use a well-defined solution delivery methodology or project lifecycle (PLC) framework that aligns to our PLC. 

The PLC defines several stages in the delivery of a solution or IT capability, with approval gates and specific 

deliverables at each stage. All projects follow several phases: 

● 

Business Commit, where the business case and benefits are clearly articulated 

● 

Concept Commit, where the solution architecture is the primary outcome 

● 

Execute Commit, where detailed design work and planning starts 

Architecture, Design, and Operational Readiness Reviews occur throughout the process, ensuring that no solution 

is implemented without the appropriate resources, support, and communications plans in place. 

Careful project management, along with governance from the Service Management Office and the Project 

Management Office, and regular syncing with the project stakeholders ensure that projects stay on time and on 

budget. Deviations are quickly identified, and appropriate remediation or business decisions are made expediently 

to get back on track. 

Ultimately, the business driver for deploying ISE is our strategy of embedding security within the network fabric. 

Relying on outdated, hardened, perimeter-based models does not provide the security essential in a borderless 

enterprise, or in an environment where trends such as BYOD and the Internet of Everything (IoE) result in many 

more devices that require secure connectivity. 

Our global ISE deployment also delivers operational and architectural simplicity, which, in turn, drives real cost 

savings. Previously, we had to maintain 12 servers globally with long access control lists (ACLs) to provide guest 

access. With the deployment of ISE Guest, we have reduced our footprint to two VMs globally and an ACL of fewer 

than 20 lines. Deriving the exact cost savings depends on the total cost of ownership (TCO) calculator. We have 

seen actual TCO reductions in operational, infrastructure, and upgrade costs for our guest access service alone.