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CESNA 3.1 SI&I Priorities and Deliverables
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Driving Ethernet Deeper – COX NOLA Case Study
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Driving Ethernet Deeper Ethernet Business Services over DOCSIS COX - - PowerPoint PPT Presentation
Driving Ethernet Deeper Ethernet Business Services over DOCSIS COX - - PowerPoint PPT Presentation
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
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Driving Ethernet Deeper – COX NOLA Case Study
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Carrier Ethernet
Business Services
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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
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Driving Ethernet Deeper – COX NOLA Case Study
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Carrier Ethernet L2VPN Services
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 Private LAN (EP-LAN) Supports dedicated UNIs Supports transparent LAN services Supports multipoint Layer 2 VPNs Ethernet Virtual Private LAN (EVP-LAN) Supports service-multiplexed UNIs Supports multipoint Layer 2 VPNs
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
E-LINE Services E-LAN Services Port-based VLAN-based
E-Tree Services not shown here *
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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
MSO/Service Provider A
CE UNI Subscriber Site UNI CE Internal-NNI External-NNI Subscriber Site
MSO/Service Provider B
Internal-NNI
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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
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COX New Orleans Telecommuter Service
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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 Data traffic VoIP and Data Traffic to use separate VLAN’s in CO
Layer 2 Ethernet Service
Call Manager(s) DHCP Servers Application Server Farm
Telecommuter(s) Enterprise Data Center
CM
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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 Data traffic is untagged; VoIP is Tagged for service separation
HFC
Server Farm Call Managers
Telecommuter(s)
Data
VoIP
VLAN VoIP
VoIP
Data VLAN VoIP VLAN TLS
IP/MPLS Metro Network
VoIP
VLAN VoIP Data MPLS Label (s) MPLS Label (s)
EoMPLS VC for H-VPLS
Fiber Carrier Ethernet Network
L2 802.1Q Handoff
Data
VoIP
VLAN VoIP Data VLAN
MPLS PE CMTS H-VPLS Agg
Enterprise Data Center
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Server Farm Call Manager(s)
COX New Orleans Telecommuter Application
Service Traffic Separation
CMTS adds a TLS over DOCSIS tag to all traffic Data Traffic is single tagged VoIP is double tagged, with same S-VLAN as Data Flexible frame matching needed on upstream router
IP/MPLS Metro Network
VoIP
VLAN VoIP Data MPLS Label (s) MPLS Label (s)
EoMPLS VC for H-VPLS
Fiber Carrier Ethernet Network
VoIP
Data VoIP VLAN
MPLS PE
VFI
VLAN 100
Physical Loopback
Data
VoIP
VLAN 100 VLAN 100
Intelligent Packet Classification
VoIP
Data Data VLAN
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Deployment Challenges and Service Evolution
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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
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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
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Dot1Q Based BSoD for Telecommuter Service
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
Telecommuter(s)
CMTS
Data VoIP VLAN VoIP Data VoIP
VoIP Service Flow
Data VoIP
H-VPLS Agg
Data VoIP MPLS Label (s)
Fiber Carrier Ethernet Network MPL PE
VoIP Data
IP/MPLS Metro Network
EoMPLS VC for H-VPLS
Data VLAN VoIP VLAN
Server Farm Call Managers
Challenge Impact
Traffic Isolation Per site Configuration L2 Problem Detection CM Down Propagation High Availability and Load Balancing Service Scale (CMTS)
Enterprise Data Center
Future 4000
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MPLS Based BSoD for Telecommuter Service
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 !!
Telecommuter(s)
CMTS
MPLS PE
Data VoIP VLAN VoIP Data VoIP
VoIP Service Flow
H-VPLS Agg
Data VoIP MPLS Label (s)
Fiber Carrier Ethernet Network
VoIP Data
IP/MPLS Metro Network
EoMPLS VC for H-VPLS
Data VLAN VoIP VLAN
Server Farm Call Managers
Challenge Impact
Traffic Isolation Per site Configuration L2 Problem Detection CM Down Propagation High Availability and Load Balancing Service Scale (CMTS)
Enterprise Data Center
Future upto16000
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Summary
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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
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