Slide 1

Outline

	Introduction
	Network topology evolution
	Traffic characteristics
	Ethernet service origination
	Summary

Ethernet services
market opportunity

	Enterprises need more bandwidth to more locations
		Bandwidth demands are increasing at every site
		Facility expansions create larger metro campuses
		National and global facility expansions are growing
	Enterprises need more applications and more simplicity
		Ethernet has a strong familiarity and preference
		Bandwidth upgrades without hardware change
		Buying managed services helps the outsourcing trend
	Enterprise see more cost-effective alternatives
		Internal network analysis shows dramatic value gains
		Legacy services under transition to private networking solutions
		Creative budgetary approaches underway with productivity justification

Storage services
market opportunity

	Enterprises need higher levels of business continuity
		Data security becomes mission critical
		Network downtime costs can be devastating
		New government regulations (Basel and SEC) are mandating recovery times and security distances
	Enterprises need higher access speeds and distances
		Increasing storage volumes and access demands
		Increasing distances, turning SANs into MANs and WANs
	Enterprises need higher flexibility and more locations
		Storage environments and applications are increasing
		New out-of-city facility savings programs drive more sites

Slide 5

Point-to-point implementations

	Point-to-point
		Fiber relief
		Economic long reach
	Ring
	Modified rings
	Mesh

Ring implementations

	Point-to-point
	Ring
		Phys ring/logical mesh
		Optical pass through
		Service extension
		Opt. protection
	Modified rings
	Mesh

Modifying the ring topology

	Point-to-point
	Ring
	Modified rings
		High-capacity routes, sub-nets
		Protection opt.
	Mesh

Growing towards full mesh

	Point-to-point
	Ring
	Modified rings
	Mesh
		Routing efficiency
		Capacity utilization
		Protection flexibility

Dynamic vs. static advantages

	Lower 1st installed costs (3-10x)
	Lower equipment cost/service (2-5x)
	Simpler installation & maintenance
	CWDM & DWDM flexibility
	Mesh support (Degree-2+ connectivity)
	Enables shared protection and mesh topologies
	Increased planning flexibility
	Faster incremental service turn-up
	Simpler service upgrades

Slide 11

Traffic evolution
Mesh/ring

	Predictable traffic
		Between backbone access points
		High-cap users to backbone
		High-cap to high-cap

Traffic evolution
Linear

Traffic characteristics

	Predictable high-capacity routes
		Network part of network backbone (especially non-dedicated linear systems)
		Network connection between or to access points on the backbone
		Heavy user internet access point (Web service enterprises, research institutions, etc.)
	Unpredictable bandwidth needs
		Small/medium business users
		Consumer internet users

Slide 15

Network layers

Layer characteristics

Ethernet service creation

	Many 100,000s of service defining devices
		Edge routers, B-RASS, etc.
		Management challenge (maintain, operate, upgrade, etc.)

Access network challenges

	Efficient operation
		Easy/no set-up
		No troubleshooting
		No service dependent upgrades
	“Carrier class”
		Rate shaping
		Protection options
		Performance visibility
	Cost-efficient
		Delivery platform: service agnostic
		Small form factor: “Pizza box”
		Interfaces: S/XFP, RJ45

Summary

	Network topology considerations
		CWDM & DWDM flexibility
		Simpler installation & maintenance
		Mesh support (Degree-2+ connectivity)
	Traffic pattern considerations
		Static/slowly changing demands:
			Customer base:  few but large
			Key requirements: reliability, performance guarantee
			Cost sensitivity: medium and mostly on BW/$
		Variable demands:
			Customer base:  many but small
			Key requirements: service options
			Cost sensitivity: high on both first install and BW/$
	Access network requirements
		Differentiated service options
			Rate shaping
			Protection options
			Performance visibility
		Cost-efficient
			Delivery platform: service agnostic
			Mass market concept
		Efficient network operation and maintenance

Slide 21