Comcast offers Metro Ethernet services for businesses over its 600,000+ route mile fiber network. The network uses 10G/40G regional networks and SIP scaled infrastructure to provide Ethernet Private Line, Ethernet Virtual Private Line, Ethernet Network Service, and Ethernet Dedicated Internet services from 1Mbps to 10Gbps. Comcast's facilities-based network provides highly reliable, scalable, and physically diverse connectivity to improve upon legacy services like DSL, T1, and frame relay.

1. Comcast Metro EthernetEnterprise Business ServicesTim MurphyEnterprise Accounts(484) 680-1086Timothy_murphy4@cable.comcast.com

2. COMCAST CORPORATION2

3. NETWORK OVERVIEWNational NetworkPlant route miles – 600K

4. Fiber route miles – 147K

5. Optical nodes – 116K

6. Traffic type - 95% commercial or customer of a direct peerTechnology10G/40GBPS regional networks

7. Network Production Demo of 100G

8. SIP Scaled Infrastructure

9. IPv4 and IPv6 operational

10. QoS-based voice, video & data

11. Self-healing architecture3Comcast is the largest facilities-based, last-mile alternative to the ILECs / CLECs in the United States. Physically diverse path to ensure business continuity.

12. Comcast Network Architecture Network Resiliency – built to support today’s & tomorrow’s business class performance requirementsHighly Scalable – able to deliver Ethernet services to more locations with more bandwidth options in granular bandwidth incrementsIntegrated Ethernet Access – able to deliver Internet, voice, video and data needs via an Ethernet handoffLayer-2 VPN support – delivering any-to-any connectivity. Leveraging VPLS capabilities within MPLS to provide a Layer-2 VPN enabling the end user to maintain control over routing protocolsArchitecture - dual star topology; leveraging best-in-class multi-vendor solutionsServices - all Metro Ethernet offerings are fully MEF certified both from a service and hardware vendor perspectiveTransparency – full CoS / QoS transparency and non-routing layer 2 and layer 3 protocol control and transparency4

13. COMCAST ETHERNET NETWORK SERVICES OVERVIEW Customer BenefitsMEF (Metro Ethernet Forum) certified

14. Online Reporting

15. Network Monitoring 24x7x365

16. Local Support

17. Scalable bandwidth

18. Network diversity

19. Facilities based network providerImproves upon services including:DSL

20. T-1

21. DS-3

22. Pt-to-Pt Private line

23. Frame Relay

24. ATM5

25. COMCAST ETHERNET NETWORK SERVICES PORTFILIO Ethernet Private Line

26. Ethernet Virtual Private Line

27. Ethernet Network Service

28. Ethernet Dedicated Internet*Services not available in all areas6

29. ETHERNET PRIVATE LINEDedicated connectivity / capacity between locations

30. Highly secure physical layer data segregation . . . your traffic is not switched or routed with other customer data

31. Scalable bandwidth options (1Mbps to 10Gbps)

32. Three classes of service (CoS) options – Basic, Priority, and PremiumComcast NetworkSITE 1 SITE 2Customer Premise EquipmentDedicated capacity through the networkCustomer Premise EquipmentComcast SwitchComcast Switch7

33. ETHERNET VIRTUAL PRIVATE LINEEthernet Virtual Private Line provides a point-to-point connection that replaces frame relay or ATM services and supports a Service Multiplexed UNI, allowing for a single physical connection to customer premise equipment for multiple virtual connections.SITE 1Comcast NetworkComcast SwitchCustomer PremiseEquipmentSITE 2Customer Premise EquipmentComcast Switch8

34. ETHERNET NETWORK SERVICEAny-to-Any Connectivity – a site can send traffic to any other site within the network through a single Ethernet interface

35. Highly Secure – reliable data segregation through the private Comcast network

36. Scalable bandwidth options (1Mbps to 10Gbps)

37. Three classes of service (CoS) options – Basic, Priority, and Premium9Comcast NetworkCustomer Premise Switch or RouterSITE 1Customer Premise Switch or RouterSITE 3Comcast SwitchSITE 2Comcast Switch

38. ETHERNET DEDICATED INTERNETDedicated connectivity to the Internet, provisioned from 1Mbps to 10Gbps

39. Static IP addressing

40. Domain Name Services – primary and secondary DNS support

41. Border Gateway Protocol Routing – Optional BGP setup to facilitate multi-homing between multiple ISP networksSITE 1Comcast NetworkCustomer Premise EquipmentComcast SwitchComcast Internet Gateway10

42. How We Deliver Value to Our Customers11Flexible, secure, scalable and highly reliable solutions to help grow your businessDiversityCompletely diverse from all other telcom networks. Unique to the industry

43. Custom design building entry, street routes, multi-homing and BGP Our NetworkEnd to end 24x7x365 monitoring, control and visibility

44. We own the entire network including the local loops

45. Eliminates frustration of finger pointing between vendors

46. Ethernet interfaces are simpler to manage and cost less

47. Price per Mbps lower than most legacy technologies

48. Well understood by IT staff. No learning curve. One protocol for LAN and WAN EthernetScalabilityRapidly upgrade bandwidth to support new business applications – up to 10G

49. No delays associated with provisioning new circuits, bonding or cost of new hardware ResilientMinimal latency and low packet losss backed by industry leading SLA’s

50. High network availability ensures your applications run at peak performanceWhy Comcast?Financial Stability – a $35B, locally headquartered company

51. Ethernet product portfolio that is reliability, scalable and completely diverse – laser focused

52. Flexible, aggressive pricing options

53. Local access is delivered 100% over the Comcast built , wholly owned and operated Network

54. No middle man . . . no finger pointing. We are completely diverse, accountable

55. Access to local resources (sales, engineering, service)

56. A team that is committed to your success