This document discusses the benefits and challenges of adopting cloud Ethernet for cloud operators. It notes that Ethernet is the primary building block for cloud networks and that cloud Ethernet adoption can provide benefits like cost effectiveness and interoperability through automation and programmability. However, it also presents challenges around measurement, maintaining relationships across multiple vendors, and ensuring network availability. The document then explores these challenges in more depth and outlines use cases for cloud service provisioning.

1. Reaching for Cloud Ethernet -
Boon or Bane for Cloud Operators
Santa Clara, CA USA
Forum 1B: Ethernet in Data Centers - on Wednesday, April 30, 2014 from 8:30 to 10:50 am - Jathin Ullal, Marketing Manager, HP

2. Why Cloud Ethernet Adoption?
Santa Clara, CA USA
April 30, 2014 2
•Ethernet – primary building block for cloud networks
• Virtualization
• Automation
• Scalability
• Programmability
• Analytics:
BENEFITS:
• Cost effectiveness
• Interoperability
• Automation
• Programmability
CHALLENGES
• Measurement
• Relationship
• Multi-vendors
• Availability

3. Network Automation Challenge #1 Measurement
Santa Clara, CA USA
April 30,2014 3
You cannot manage what you cannot measure
• Are you able to provide overview reports by specific business units, customers,
departments, or sites?
• Can you provide business visibility with high-level executive reports?
• Do you have visibility into traffic-flow utilization by application type and
availability?
• Do you have the forecasting and trending data needed to proactively identify
problems?
• Can you measure utilization of your network infrastructure across your users to
drive efficiency?

4. Network Automation Challenge #2 Relationships
Santa Clara, CA USA
April 30,2014 4
Relationship between applications and their underlying components
• Can you maintain an up-to-date network topology?
• Can you view the impact of the cloud on your existing network topology maps?
• Can you capture and report historical topology and event changes for
forensics?

5. Network Automation Challenge #3 Multivendor
Santa Clara, CA USA
April 30,2014 5
Hardware, Software, Services from multiple vendors
• Can you manage physical and virtual network devices
using one console?
• Can you manage multiple vendors using one console?
• Do you have visibility into the network of your SaaS provider?

6. Network Automation Challenge #4 Availability
Santa Clara, CA USA
April 30,2014 6
Network reachability, availability and performance guarantee
• Are you able to proactively simulate and model effects on network due to
network problems, outages?
• Can you guarantee network performance?
• Are you able to monitor application traffic to and from consumers of cloud
services, even as devices are dynamically provisioned or retired?
• Can you guarantee service delivery levels by proactively managing
and fixing network performance degradation?

7. Benefits & Challenges for the Enterprise
Santa Clara, CA USA
April 30,2014
Challenges: Security Complexity & Compatability
Slower network provisioning Rigidity in business models
Lack of guaranteed bandwidth
Dev/Test cloud
Application
transformation
Continuous delivery
automation
Converged
infrastructure as a
service
Manage and secure
Consume external
services
Enable operational agility service creation, brokering
Empower developers Accelerate application delivery
Deployment options (private, managed, public)
Deployment options
(private, managed, public)
Agility
Speed innovation
Reduce cost
Geographical independence
Disaster recovery

8. Benefits & Challenges for Providers
Santa Clara, CA USA
April-May 2014 8
BENEFITS:
• Increased resiliency, assurance
• Ease of scalability
• Affordable price-point
• Wide availability
• Ubiquitous
• Increased flexibility
CHALLENGES:
• Consistent security and policy enforcement
• Security breaches and privacy
• L2 scale, VM migration
• Compatibility, complexity
• Slow network provisioning
• Rigid billing models
• No bandwidth guarantees

9. Network Functions Virtualization (NFV)
Santa Clara, CA USA
April-May 2014 9
BENEFITS:
• High-touch network appliances: fw, lb turned to VMs
• Consolidates on industry standard x86 HW
• Allows service chaining and elasticity
• NFV complements SDN but not dependent
• Allows lower cost usage based business models
• Improves agility and provisioning
CHALLENGES:
• HW & SW tuning affects performance
• Scalability and performance varies
• Difficult to benchmark performance and protect QoS, QoE and SLA

10. Software Defined Networking (SDN)
Santa Clara, CA USA
April-May 2014 10
BENEFITS:
• Enables faster configuration as well as automated reconfiguration of the network
• More granular control over bandwidth-on-demand, QoS, traffic/path engineering
• Enables pay-per-use network features
• Consolidates control of multi-vendor environments
• Faster implementation of reliability and security policies
• Tomorrow’s elastic networks
CHALLENGES:
• Centralization
• Packet punting to controller
• Security and scalability due to central controller
• Forwarding protocol

11. Openflow
Santa Clara, CA USA
April 30, 2014 11
BENEFITS:
• Protocol designed to manage multi-network vendors
• Faster implementation of security & reliability policies
• Granular control on QoS & traffic engineering
CHALLENGES:
• Security & scalability
• Forwarding protocol
• Centralization
• Packet forwarding

12. Cloud Orchestration Framework
Santa Clara, CA USA
April 30, 2014 12
End-to-end provisioning provided across virtual & physical infrastructure of data centers.
BENEFITS:
• Self-service
• Rapid provisioning
• Optimize virtual resource usage
CHALLENGES:
• Complex
• Deployment challenging
• Coordination on protocol neutral models and APIs

13. Cloud service provisioning use cases
Santa Clara, CA USA
April 30, 2014 13
• Enterprise - automated workflows and easier provisioning
• Cloud operators for multi-tenant environments
• Amazon - sell physical & digital goods
• Big Data analytics
• On-demand storage
• Web billing services
• Service chaining: Configuring L4-7 chain of NFV functions dynamically
• Traffic engineering for global WAN interconnecting data centers
• Dynamic exchanges: Create instant exchanges between peering networks
• Big Data cut-through: Allow large data flows to bypass bottlenecks
• Bandwidth on demand: Programmatic interface for end-user to request instant BW
• End-to-end service provisioning: SP datacenter all the way to mobile handsets with QoS,
SLA

14. Thank You!
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April 30, 2014 14
References:
1. http://www.cloudethernet.org/wp-
content/uploads/2013/10/CEF-White-Paper-
20131023.pdf
2. https://ssl.www8.hp.com/ww/en/secure/pdf/4
aa3-4954enw.pdf
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