Driving Ethernet Deeper Ethernet Business Services over DOCSIS COX New Orleans (NOLA) Case Study

Transcription

1 Driving Ethernet Deeper Ethernet Business Services over DOCSIS COX New Orleans (NOLA) Case Study Kashif Islam, Technical Leader Cisco Carlos Sanchez, Systems Engineer Cisco Edward Kerner, Network Engineering Supervisor COX New Orleans CESNA 3.1 SI&I Priorities and Deliverables 1

2 Agenda Carrier Ethernet Business Services COX New Orleans Telecommuter Service Deployment Challenges and Service Evolution Summary and Q&A Driving Ethernet Deeper COX NOLA Case Study 2

3 Carrier Ethernet Business Services Driving Ethernet Deeper COX NOLA Case Study 3

4 Business VPN Services Mass scale Carrier Ethernet Services adoption MPLS-based L3 VPN and L2 VPN services Advantages of L2 VPN services over L3 VPN: Protocol Agnostic No protocol sharing between SP and Customer More customer control over their network Simpler to deploy Standardized Carrier Ethernet L2VPN Services Driving Ethernet Deeper COX NOLA Case Study 4

5 Carrier Ethernet L2VPN Services E-LINE Services E-LAN Services Port-based Ethernet Private Line (EPL) Replaces a TDM private line Dedicated UNIs for point-to-point connections Single Ethernet Virtual Connection (EVC) per UNI The most popular Ethernet service due to its simplicity Ethernet Private LAN (EP-LAN) Supports dedicated UNIs Supports transparent LAN services Supports multipoint Layer 2 VPNs VLAN-based Ethernet Virtual Private Line (EVPL) Replaces Frame Relay or ATM services Supports service multiplexed UNIs (i.e., multiple EVCs per UNI) Allows single physical connection (UNI) to customer premise equipment for multiple virtual connections Ethernet Virtual Private LAN (EVP-LAN) Supports service-multiplexed UNIs Supports multipoint Layer 2 VPNs E-Tree Services not shown here * Driving Ethernet Deeper COX NOLA Case Study 5

6 Carrier Ethernet Components User-to-Network Interface (UNI) Physical demarcation between Subscriber and MSO Network-to-Network Interface (NNI) Physical demarcation between individual Carrier Ethernet networks Ethernet Virtual Circuit (EVC) Logical end-to-end service representation Subscriber Site MSO/Service Provider A MSO/Service Provider B Subscriber Site UNI Internal-NNI External-NNI Internal-NNI UNI CE CE Driving Ethernet Deeper COX NOLA Case Study 6

7 Business Services Over DOCSIS Builds on standard defined by MEF Competitive advantage for Cable SPs due to HFC reach DOCSIS 3.0 offer new opportunities for BSOD Higher speed with Channel bonding Effective competition against T1, leased line and in some cases, fiber Multiple Deployment Options Transparent LAN Services over DOCSIS 802.1Q (Dot1Q) Based BSoD MPLS based BSoD Driving Ethernet Deeper COX NOLA Case Study 7

8 COX New Orleans Telecommuter Service Driving Ethernet Deeper COX NOLA Case Study 8

9 COX New Orleans Telecommuter Application Service Objectives and Requirements To provide telecommuters with Layer 2 Access to Central Office Use existing HFC access in Home Office Each Home Office contains: IP Phone for Voice over IP traffic PC for traffic and Traffic to use separate VLAN s in CO Telecommuter(s) CM Layer 2 Ethernet Service Call Manager(s) DHCP Servers Enterprise Center Application Server Farm Driving Ethernet Deeper COX NOLA Case Study 9

10 COX New Orleans Telecommuter Application Service Architecture H-VPLS to provide MAC learning and bridging at Central Location Transparent LAN Services over DOCSIS used on CM and CMTS CMTS encapsulate all traffic from CM in a 802.1Q VLAN Tag traffic is untagged; is Tagged for service separation Telecommuter(s) HFC CMTS VLAN VLAN VLAN TLS MPLS PE IP/MPLS Metro Network MPLS Label (s) VLAN MPLS Label (s) EoMPLS VC for H-VPLS H-VPLS Agg Server Farm VLAN L Q Handoff Fiber Carrier Ethernet Network Call Managers Driving Ethernet Deeper COX NOLA Case Study 10 Enterprise Center VLAN

11 COX New Orleans Telecommuter Application Service Traffic Separation CMTS adds a TLS over DOCSIS tag to all traffic Traffic is single tagged is double tagged, with same S-VLAN as Flexible frame matching needed on upstream router VLAN 100 VLAN 100 Physical Loopback MPLS Label (s) VLAN MPLS Label (s) VFI VLAN 100 Intelligent Packet Classification MPLS PE EoMPLS VC for H-VPLS IP/MPLS Metro Network VLAN VLAN Server Farm Fiber Carrier Ethernet Network Call Manager(s) Driving Ethernet Deeper COX NOLA Case Study 11

12 Deployment Challenges and Service Evolution Driving Ethernet Deeper COX NOLA Case Study 12

13 Service Deployment Challenges End-to-End Traffic Isolation Centralized solution difficult to troubleshoot Per Site CMTS Configuration CMTS manually configured for each site L2 Problem Detection and Isolation End-to-end troubleshooting tools are mainly Layer 3 Cable Modem down, but L2 circuit active High Availability and Load Balancing Only one forwarding interface per CMTS Service Scale 4000 services (VLANs) total Driving Ethernet Deeper COX NOLA Case Study 13

14 Service Evolution Cable Labs compliant Business Services over DOCSIS (BSoD) 1) Dot1Q-based BSoD Similar to TLS over DOCSIS but supports: Multiple VLAN s for single CM Provisioning through Cable Modem Config file 2) MPLS-based BSoD Enables MPLS PE functionality on CMTS Provisioning through CM Config file MPLS-based load balancing and High Availability Driving Ethernet Deeper COX NOLA Case Study 14

15 VLAN Dot1Q Based BSoD for Telecommuter Service Service Flow Telecommuter(s) CMTS MPL PE IP/MPLS Metro Network EoMPLS VC for H-VPLS MPLS Label (s) H-VPLS Agg Fiber Carrier Ethernet Network VLAN Enterprise Center VLAN Changes from TLS over DOCSIS Design: Use multiple services flow with VLAN based Classification Assign per-traffic VLAN Use Cable modem Configuration file for CMTS side processing Server Farm Challenge Traffic Isolation Per site Configuration L2 Problem Detection CM Down Propagation High Availability and Load Balancing Call Managers Impact Future Service Scale (CMTS) Driving Ethernet Deeper COX NOLA Case Study

16 MPLS Based BSoD for Telecommuter Service Telecommuter(s) VLAN Service Flow CMTS MPLS PE IP/MPLS Metro Network EoMPLS VC for H-VPLS MPLS Label (s) H-VPLS Agg Fiber Carrier Ethernet Network VLAN Enterprise Center VLAN Changes from TLS over DOCSIS Design: CMTS as MPLS PE!!!! Use multiple services flow with VLAN based Classification Assign per-service flow EoMPLS PW Use Cable modem Configuration file for CMTS side processing Simplest End-to-End Design!! Server Farm Challenge Traffic Isolation Per site Configuration L2 Problem Detection CM Down Propagation Call Managers High Availability and Load Balancing Service Scale (CMTS) Impact Future upto16000 Driving Ethernet Deeper COX NOLA Case Study 16

17 Summary Driving Ethernet Deeper COX NOLA Case Study 17

18 Summary Business Services over DOCSIS picking steam Leverage existing HFC infrastructure for MEF Services Multiple deployment option for Business Services over DOCSIS TLS over DOCSIS for COX Telecommuter application Metro network key for end-to-end Layer 2 transport Dot1Q- and MPLS-based BSoD offers enhanced functionality and flexibility Driving Ethernet Deeper COX NOLA Case Study 18

19 Q & A Driving Ethernet Deeper COX NOLA Case Study 19