Cisco - VPLS For Carrier Ethernet Services PDF
Cisco - VPLS For Carrier Ethernet Services PDF
Cisco - VPLS For Carrier Ethernet Services PDF
Carrier Ethernet
Services
Tim McSweeney
Product Manager
Layer 2 VPNs & Network Access
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 1
Agenda - GARR
VPLS Overview
Why Deploy VPLS?
VPLS in a Nutshell
Hierarchical VPLS and Autodiscovery
Manageability and Cisco Service Delivery Models
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 2
What Is Driving L2VPNs?
The Ever Expanding Applications of Ethernet
Access Aggregation PSN Aggregation Access
Internet
VLAN 100
Termination
IP/MPLS
VLAN 200 VLAN
200
Transport
VPWS
Layer 3
VPWS VPLS
Virtual Private Wire Service Virtual Private LAN Service
Point
Point to
to Point
Point Point
Point to
to Multipoint
Multipoint
MPLS
MPLS Core
Core
IP
IP Core
Core MPLS
MPLS Core
Core
Ethernet
Ethernet Ethernet
Ethernet
Frame
Frame Relay
Relay Frame
Frame Relay
Relay
ATM
ATM (AAL5
(AAL5 &
& Cell)
Cell) ATM
ATM (AAL5
(AAL5 &
& Cell)
Cell)
PPP
PPP &
& HDLC
HDLC PPP
PPP &
& HDLC
HDLC
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 4
MPLS Operation Overview
3. Ingress Edge LSR 4. LSR switches 5. Egress Edge LSR
receives and packets using removes label and
“labels” packets label swapping delivers packet
Customer PE P P
Site A
Customer
PE Site B
LAN MAC Label Header MAC Header Label Layer 2/L3 Packet
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 6
MPLS VPN Security: Comparable to Frame
Relay and ATM
Source: Cisco MPLS based VPNs: Equivalent to the security of Frame Relay and ATM, Miercom, March 2001,
http://www.miercom.com/_gfx/nav/acrobat.gif
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 7
GMPLS Overview
GMPLS provides Unified Control Plane across different layers
GMPLS extends MPLS/MPLS-TE control plane
GMPLS extends these control planes to support ANY class of
interfaces (i.e. layers)
Provides Bi-directional LSPs
GMPLS supports 5 types of interfaces:
PSC - Packet Switching Capable: IP/MPLS
L2SC - Layer-2 Switching Capable: ATM, FR, Ethernet
TDM - Time-Division Multiplexing: SONET, SDH, G.709 ODUk
LSC - Wavelength Switching: Lambda, G.709 OCh
FSC - Fiber Switching
With MPLS-TE, GMPLS enables:
Connection Protection/Restoration capabilities
Separation between transmission, control and management plane
Network management using SNMP (dedicated MIB)
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 8
Network Hierarchy: GMPLS/MPLS Integration
Ethernet Ethernet
GMPLS LSP
Frame Frame
GMPLS GMPLS
LSP LSP
Stacks GMPLS Stacks
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 9
GMPLS/MPLS Integration
Cisco actively involved in private and GMPLS
public interoperability (for example, available for
ISOCORE – www.iscocore.com) customer
Main focus: IP/Optical integration – proof of evaluation on
concept and interoperability across Cisco routers
GMPLS/MPLS layers
Optical Dynamic GMPLS LSPs signalled • Cisco CRS-1
and advertised in the MPLS layer • Cisco 12000
L3VPNs, TE, VPLS, PW, Multicast services • Cisco 7600
running over the GMPLS LSP
If you are interested let us know!!!
GMPLS deployment
Service providers in Japan – have done
testing and ready for deployment
Typical services: L3VPN, TE, PW
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 10
Pseudo Wires Enable… VPLS, AToM, L2TPv3
Transport over non-Native Bridged
Backbones Ethernet
over
Co-existence with other ATM
Encapsulations
SP Network CE
Service
Interworking
EoMPLS
Pseudo Wire
Ethernet example
Ethernet VLAN CE
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 11
Why Deploy VPLS?
Feature Benefits
MPLS core network Overcomes distance limitations of
emulates a flat LAN segment Ethernet-switched networks
Æ Offer Virtual Private LAN Services
Formerly called Transparent LAN
Services (TLS)
Extends Ethernet broadcast Connects each customer site to many
capability across WAN or all other customer sites
ÆPoint to Multipoint – A single CE-PE link transmits Ethernet
Connectivity packets to multiple remote CE routers
– Fewer connections required to get full
connectivity among customer sites
Æ OpEx Savings
Multipoint plug-and-play Adding, removing or relocating a CE
provisioning router requires configuring only the
directly attached PE router
Æ OpEx Savings
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 12
VPLS Reference Model
PE PE Customer
Customer
Site
Site
MPLS
Full Mesh of
PE
Pseudowires Attachment VCs are
Ethernet
Customer
Site
VPLS 192.168.11.11/24
VPLS
192.168.11.1/24
- Single flat hierarchy
- MPLS to the EDGE
- MPLS Core
192.168.11.2/24
H-VPLS
H-VPLS
Hierarchical VPLS u-PE
PE-CLE n-PE n-PE
u-PE
PE-CLE
MTU-s
MTU-s PE-POP PE-POP
- Two (or More) Tier GE PE-rs PE-rs
PW
Hierarchy
- MPLS or Ethernet
at the Edge
- MPLS Core ETHERNET EDGE MPLS CORE MPLS EDGE
Point-to-Point or Ring
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 14
“Flat” VPLS Deployment Model:
Customers Attach Directly to VPLS Service
PE-1 PE-2
PE-3
CE-SITE3
Description: Customers directly attach to VPLS service at Provider
Edge
• Suitable for small customer implementations
• Simple provisioning
• Full mesh of directed LDP sessions required between participating PEs
• VLAN and port level support (no QinQ)
Challenge: Limited scalability
• Full mesh causes classic scaling issue — N*(N-1)/2
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 15
Hierarchical VPLS Deployment Model:
Hub-and-Spoke
Cisco Cisco
7600 7600
VPLS/ MPLS
Cisco Cisco
7600 7600
STP
Cisco
7600
City 1 City 3
STP Domain Q-in-Q 20 Domain
STP
Q-in-Q 14
City 2
Q-in-Q 10 Domain
Description:
• Customers attach to Regional Metro Ethernet networks
• VPLS links the Metro Ethernet Regions
Benefit: Scales to support larger Ethernet deployments
• Full mesh for core tier (hub) only
A Comprehensive Solution: Robust, Flexible, Scalable, Manageable
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 16
VPLS Autodiscovery and Signaling
VPN Centralized DNS Distributed
Discovery Radius Directory Services BGP
Label Distribution
Signaling
Protocol
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 18
LDP vs. BGP for PW Signaling
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 19
Pseudowire Redundancy:
Protects from Key Potential Faults
PE2a CE2a
Packet Switched
Network 2 3 4
1
CE1 PE1
Attachment
Primary
Circuits
Pseudowire
PE2b CE2b
Attachment
Circuit Redundant
Pseudowire
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 20
Inter-Autonomous System Pseudowires
AS10 AS20
Provider A Provider B
Goal:
• Extend end-to-end pseudowire deployment across multiple ASes
using VPLS
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 21
Inter-Autonomous Systems:
Pseudowire Switching
Switch Points
AS10 AS20
Provider A Provider B
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 22
Pseudowire Switching Model
attached-circuit 3
attached-circuit 1 pwvc 11
pwvc 151
PE-3
PE-1 pwvc 111
AS 1
AS 2
Pwvc 112
pwvc 12 ASBR-2 pwvc 152
PE-2 ASBR-1
attached-circuit 4 PE-4
attached-circuit 6
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 24
Unified L2 VPN Management
Integrated network
management platform
to manage:
• Metro Ethernet
Services (switched
as well as Ethernet
transport over MPLS
Core) services.
• MPLS BGP VPN
services
• AToM (ATM/FR
transport over
MPLS) services
• DiffServ/IP/ MPLS
CoS treatment for
MPLS services
above
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 25
Business Ethernet Services Architecture
Service EoMPLS PW
Port, 1:1 VLAN EoMPLS PW Ethernet
MPLS-VPN Ethernet UNI
QinQ
Business
L3 VPN Port, 1:1 VLAN
MPLS NNI
MSE
Aggregation Node
Access Node E-MSE for MPLS NNI Distribution Node
MSE
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 27
VPLS for Service Differentiation and Revenue
Growth
"PCCW is pleased to have deployed the Cisco VPLS Carrier Ethernet solution for
the provision of our next generation data services," said Larry Wong, Director of
Marketing and Products of Commercial Group, PCCW Limited based in Hong
Kong. "Cisco's VPLS Carrier Ethernet technology allows us to create service
differentiation and increase revenue growth in the enterprise and commercial
markets, as it enables flexible bandwidth utilization, service customization, multiple
connectivity, and high level of QoS and availability."
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 28
VPLS for Scalable Ethernet Services
WebPartner
(Denmark)
VPLS-based
Ethernet
broadband
services
Cisco Catalyst
6500 series
switches
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 29
VPLS Customer Deployment Profiles
SP (USA)
– VPLS used to link 16 Metro Ethernet regions
– Deployed 80 C7600 running VPLS
Financial (USA)
– Deployed VPLS in November 2004
– Provides integrated information and technology applications in the
global financial services industry
SP (Brasil)
– Developing rollout of triple play services to the DSL and Metro
Ethernet market in the city of São Paulo
– Network has independent Layer 2 aggregation domains
interconnected via pseudowires for customers that need to cross
domains
– Will use TE and Pseudowire Redundancy on the inter-domain
connections
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 30
VPLS Customer Deployment Profile
SP (North America)
– Converting existing Layer 2 access and aggregation Metro
Ethernet service offering to complete VPLS
– Objectives:
• Minimize spanning tree domain
• Unify routing scheme so VPLS endpoints and multicast video
share the same paths
• Simplify troubleshooting by not having divide troubleshooting
between L2 and L3 expert teams
• Unify QoS, routing, and convergence policies across all
services
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 31
Presentation_ID © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential 32