Cloud and the Future of Networked Systems

Cloud and the Futureof Networked Systems
Why “big, flat and dumb” isn’t enough
James Urquhart
CNET | The Wisdom of Clouds
Market Strategist, Cloud Computing, Cisco Systems, Inc.

James Urquhart
@jamesurquhart
CNET | The Wisdom of Clouds

In 20 years of distributed systems practice, what have I learned?

We need to simplify operations from the point of view of the application.

Application
a. Atype of job or problem that lends itself to processing or solution by computer: Inventory control is a common business application.
b. A program used for a particular use (as opposed to a system)

Cloud is an application centric operations model.

Prior to cloud, we were server centric…

Pre-
Cloud

Pre-
Cloud
OS
OS
OS
VM
VM
VM

App
App
App
App
App
App
Pre-
Cloud
App
App
App
OS
OS
OS
VM
VM
VM

With the adoption of cloud, we are now application centric…

Application
Cloud
Config
Code
Data
Policy

Application
Cloud
Config
Code
Data
Policy
Service(s)
Other Services

Application
Cloud
Config
Code
Data
Policy
Service(s)
Other Services
Infrastructure

Any cloud service or enabling technology must look at solutions from an application perspective.

So, what is the network’s role in cloud computing?

Application developers want one thing from the network…
…invisibility.

The temptation is…

Put a little nicer…

Unified

Simplified

Pushed to the Edge

One topology to rule them all…

…and in the darkness bind them.

The problem is that the actual requirements for cloud infrastructure don’t stop at the application.

Take security…

Each solution will almost certainly be only part of the system(s) that is/are being secured.

Security will be distributed throughout the “cloud stack”

Security will be distributed throughout the network stack

Security will be distributed across geographical and topological boundaries

Security must become
multi-tenant

Security must scale.

Security must scale.
* Chris Hoff (aka @beaker) will tell you that this is impossible today.

Security must meet a wide variety of application needs.

Same goes for
Application Management

Same goes for
Performance Management

Same goes for
QoS

Same goes for
Load Distribution

Same goes for
Etc.

Same goes for
Etc., Etc.

Same goes for
Etc., Etc., Etc.

So how will the network adapt?

Five ways:

Data center network architectures will simplify.

The network will adapt to new dominant payloads and traffic patterns.

App
App
App
App
App
App
App
App
App
App
App
App
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
Cloud Network Boundary
Virtual Data Center
Virtual Data Center
Cloud OS
Application Security Services
Application Security Services
Cloud OS
Network Services (Security, Performance, Monitoring)
Network Transport Virtualization (VPN)
Enterprise
Network
Cloud Service
Provider
Network Service
Provider
Core networks will become agile and dynamic.

The network will introduce new abstractions to simplify configuration and operation.
Private
Cloud
Public
Cloud
Management
Firewall
Load Balancer
Network Container

The network and its capabilities will become services to be consumed by cloud services.
IaaS
PaaS
SaaS
API(s)
Network service catalog(s) and fulfillment
Routers, switches, services (physical and virtual), etc.

Thanks!

Cloud and the Futureof Networked Systems
Why “big, flat and dumb” isn’t enough
James Urquhart
@jamesurquhart
jurquhar@cisco.com

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Cloud and the Future of Networked Systems

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