Transcript MPLS + Bandwidth Assured Layer 2 Services

Cisco IOS® MPLS
Bandwidth-Assured Layer 2 Services
Technology Overview
Enabling Innovative Services
October 2003
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
1
Agenda
• Announcement
• Background
• Business Drivers/Motivation
• Cisco Bandwidth-Assured Layer 2 Services
What is it?
How is it different?
• Availability/Roadmap
• Summary
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
2
Announcement
• Cisco IOS MPLS Bandwidth-Assured Layer 2
Services provides:
Improved MPLS Layer 2 functionality that drives network
convergence
Better resiliency with MPLS Fast Reroute for AToM circuits
QoS guarantees that emulate Layer 2 infrastructure built
using L2 VPN QoS & MPLS traffic engineering
• Provisioning of Cisco IOS MPLS BandwidthAssured Layer 2 Services handled by IP
Solution Center 3.1
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
3
Agenda
• Announcement
• Background
• Business Drivers/Motivation
• Cisco Bandwidth-Assured Layer 2 Services
What is it?
How is it different?
• Availability /Roadmap
• Summary
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
4
MPLS Is Key Technology for Delivery of
Layer 2 & Layer 3 Services
ATM
Services
IP
Services
IP
PNNI
MPLS
IP+ATM Switch
IP+ATM Integration
Traffic Engineering: Optimization for
Additional Traffic =>$$
Frame
Relay
Frame
Relay
MPLS VPNs: Build Once/
Sell Many
Network-Based VPNs
Optical
Services
IP
Services
IP
O-UNI
Protection Solution
Reduction in CapEx &
OpEx
MPLS Bandwidth Assured
Layer 2 Services
MPLS
ATM
Layer 2 Integration for a
Single Converged Network
Infrastructure
© 2003, Cisco Systems, Inc. All rights reserved.
IP+Optical Switch
IP+Optical Integration
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Agenda
• Announcement
• Background
• Business Drivers/Motivation
• Cisco Bandwidth-Assured Layer 2 Services
What is it?
How is it different?
• Availability/Roadmap
• Summary
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
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Service Provider Goal: Layer 2 & Layer 3
Services over a Converged Core
Current
In the near future
Current:
Many Services, Many Networks
In the Near Future:
Many Services, One Network
HDLC
FR
PPP
Frame Relay
Ethernet
Internet
IP/MPLS
L2 & L3 Services over
Converged IP/
MPLS Core
Internet
ATM
IPsec VPN
Layer 3 VPN
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
ATM
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Motivation for MPLS Layer 2 Services with
Bandwidth Assurances
• Requirements:
Enterprise subscribers require global footprints
Choice of access technology available – ATM, Frame Relay,
Ethernet, etc.
Choice of access speeds available – 64K, 512K, T1/E1, T3/E3,
OC3, etc.
Layer 2 chosen transport not only IP, but non-IP traffic like
IPX, Appletalk, DECnet, etc.
Layer 2 allows an enterprise to retain routing control for
building value-added networks
• Layer 2 infrastructure inherently provides bandwidth
guarantees – e.g., Frame Relay CIR, ATM CBR/VBR
• Consequently, MPLS Layer 2 services need to be
built such that bandwidth assurances are enabled
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
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Motivation for Network Convergence
• Many Services, One Network
• Applicable for incumbent and greenfield
service providers
• Incumbent service providers:
Already have multiple networks installed – Internet, ATM, FR
Network convergence enables significant savings of
operating expenses (OpEx)
• Greenfield service providers
Building out new networks
Network convergence enables a wide service portfolio
Reduces capital expenses (CapEx) – no need to built separate
networks
Reduces OpEx – no need to train staff for multiple networks
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
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Typical Deployment
Requirement: Need to connect multiple sites with different Layer 2 access
at each─e.g. Frame Relay, ATM, Ethernet
Before
Central Site
Frame
Relay Access
Remote Site 1
Frame Relay –
DS3
ATM –
OC3
After
Central Site
ATM –
OC3
ATM
Network
Ethernet
Access
Ethernet –
100 Mbps
Remote Site 1
Frame Relay –
DS3
IP/MPLS
Converged
Backbone
Ethernet –
100 Mbps
Interworking Gateway
Remote Site 2
Interworking at IP layer only
No bridged interworking
Central gateway responsible for interworking
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
Remote Site 2
Layer 2 Interworking
For IP and multiprotocol
Done at the edge
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Uses simple draft-martini signaling extensions
Agenda
• Announcement
• Background
• Business Drivers/Motivation
• Cisco Bandwidth-Assured Layer 2 Services
What is it?
How is it different?
• Availability/Roadmap
• Summary
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
11
So What’s New?
• This set of functionality enhancements
provides flexible connectivity
• For the first time service provider is
able to offer similar functionality to
existing Layer 2 connections
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
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Announcement Details
Any Transport over MPLS (AToM) enhancements
Single-cell relay & packed-cell relay – VC & VP mode
Ethernet over MPLS – Port mode
Frame Relay to ATM/Ethernet/PPP/HDLC Interworking
Ethernet to ATM Interworking
Traffic Engineering & Fast Reroute for Layer 2
Fast Reroute support for AToM
TE Tunnel Selection for AToM VCs
TE LSP attributes
RSVP Reliable Messages & Refresh Reduction
QoS enhancements for Layer 2
Frame Relay QoS
ATM QoS
Ethernet QoS
Provisioning Solution - includes IP Solution Center (ISC) 3.1
Support of VPLS in the L2VPN application
MPLS Bandwidth Assured
Layer 2 Services
Policy-based QoS management
© 2003, Cisco Systems, Inc. All rights reserved.
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Any Transport over MPLS (AToM) Enhancements:
Frame Relay & Ethernet Services
QoS enabled on Layer 2
characteristics like Frame
Relay Discard Eligible (DE) &
Ethernet .1q
IP/MPLS Backbone
PE
Customer
Site
PE
Pseudowire
PE
Customer
Site
Customer
Site
Frame Relay
PVC
Multiple pseudo wires are
carried over a single
tunnel LSP
Ethernet
Access
Frame Relay & Ethernet Interworking can be built in two ways:
1.
Ethernet (Bridged) Interworking – for multiprotocol traffic
2.
IP (Routed) Interworking – for IP endpoints
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
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Any Transport over MPLS (AToM) Enhancements:
Frame Relay & ATM Services
IP/MPLS Backbone
QoS enabled on Layer 2
characteristics like Frame
Relay Discard Eligible (DE) &
ATM Cell Loss Priority (CLP)
PE
PE
Pseudowire
Customer
Site
Customer
Site
PE
ATM VC
Frame Relay
PVC
Multiple
pseudowires are
carried over a
single Tunnel LSP
Frame Relay & ATM Interworking (FRF 8.1-like services) can be built in two ways:
1.
Ethernet (Bridged) Interworking – for multiprotocol traffic/endpoint
2.
IP (Routed) Interworking – for IP traffic/endpoint
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
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Traffic Engineering for Layer 2: Tunnel Selection,
LSP Attributes & RSVP/TE Signaling
Tunnel Selection - Layer 2
circuits are forwarded onto
TE Tunnel
IP/MPLS Backbone
MPLS TE Tunnel built using LSP
Attributes & RSVP Reliable
Messages/Refresh Reduction
Customer
Site
Customer
Site
“Voice” Tunnel
ATM
CBR
ATM
CBR
ATM
UBR
PE
Customer
Site
“Data” Tunnel
PE
ATM
UBR
Customer
Site
Traffic Engineering for Layer 2:
1.
Tunnel Selection forwards Layer 2 circuits onto a TE Tunnel & ensures end-to-end bandwidth
guarantees
2.
LSP Attributes─Allows “diverse routes,” eg. ATM CBR traffic carried via “shorter” tunnel, ATM
UBR traffic carried via “longer” tunnel
MPLS
Assured
3. Bandwidth
RSVP
Reliable
Layer 2 Services
Messages / Refresh Reduction─increases reliability and scalability of RSVP/TE
© 2003, Cisco Systems, Inc. All rights reserved.
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Traffic Engineering for Layer 2:
Fast Reroute support for AToM
Tunnel Selection
IP/MPLS Backbone
Primary TE Tunnel
Customer
Site
PE
Customer
Site
PE
Customer
Site
Customer
Site
Backup TE Tunnel –
preprovisioned prior to failure
condition
Fast Reroute Support for AToM
1.
Primary TE tunnel carries AToM pseudo wires using tunnel selection─when a failure condition
occurs at PE router, e.g. Link Failure, Backup TE tunnel is activated and Layer 2 circuits are
switched to backup
MPLS Bandwidth Assured
2. 2 Services
Fast reroute
Layer
© 2003, Cisco for
Systems,
Inc. All rights
reserved.
support
AToM
ensures
AToM circuits restored within 50 ms
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QoS Enhancements for Layer 2:
ATM QoS
Edge QoS
Classification/Marking
ATM-CLP, MPLS-EXP, IP
DSCP, QoS-Group/Discardclass
Traffic Conditioning
Police (ATM 4.0 / Dual rate )
Congestion Mgt
Queuing, Random-Detect,
Discard-class, ABR RM Cell
Generation
IP/MPLS Backbone
PE
PE
MPLS DiffServ Core
Customer
Site
Core QoS
Classification
MPLS-EXP
Congestion Mgt
Queuing, Random-Detect EXP-Based
Customer
Site
ATM L2 VPN QoS includes:
1.
Edge capabilities that emulate traditional Layer 2 QoS like Police (ATM 4.0/Dual Rate) or ABR
RM Cell Generation
2.
Core capabilities that are DiffServ based─EXP bits on a per-class basis allow for scalable
network
MPLS Bandwidth
Assured core
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
18
QoS Enhancements for Layer 2:
Ethernet QoS
Edge QoS
Classification/Marking
CoS/.1p, MPLS-EXP, IP
DSCP, QoS-Group/Discardclass
Congestion Mgt
Queuing, Random-Detect
Discard-class
Traffic Conditioning
Police (Single/ Dual rate)
IP/MPLS Backbone
VLAN Re-write
PE
PE
MPLS DiffServ Core
Core
Classification
MPLS-EXP
Congestion Mgt
Queuing, Random-Detect EXP-Based
Customer
Site
VLAN Re-write
Customer
Site
Ethernet L2 VPN QoS includes:
1.
Edge capabilities that emulate traditional Layer 2 QoS like Police (Single/Dual Rate)
2.
Core capabilities that are DiffServ based─EXP bits on a per-class basis allow for scalable
network
MPLS Bandwidth
Assured
Layer 2 Services
core
© 2003, Cisco Systems, Inc. All rights reserved.
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Benefits
• Cisco IOS® MPLS Bandwidth-Assured Layer 2 Services
provides robust service delivery
• No address resolution (ARP mediation) required with
AToM Interworking
• Flexibility of providing Layer 2 edge services with AToM –
Ethernet, ATM, FR, PPP, HDLC
• Ensures high availability of Layer 2 services with MPLS
Fast Reroute
• Enables robust signaling capabilities for RSVP/TE
• Increases utilization of bandwidth of a network by MPLS
TE
• Enables Frame Relay CIR or ATM CBR type services on
IP/MPLS backbones
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
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ISC 3.1: MPLS & L2VPN Application
Enhancements
• Scalable distributed/redundant
architecture
• Centralized system resource
management
• Network/service autodiscovery
& inventory mgmt
• Topology tool with
geographical maps
• Resource/user partitioning
• Web UI and customer network
management (CNM) views
• Customizable workflow control
• Monitoring
• Scheduling
• Role-based access control
• User audit trail
• Open XML API
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
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ISC 3.1: AToM/Metro Ethernet Management
• Like-to-like services (MPLS control
plane)
• ATM virtual circuit service
(ATMoMPLS)
• Frame Relay virtual circuit service
(FRoMPLS)
• Ethernet virtual circuit service
(EVCS or ERS- EoMPLS)
• Transparent LAN service (Pointto-point TLS or EWS - EoMPLS)
• VPLS
• Switched backbone
• Point-to-point TLS (Ethernet Wire
Service)
• Multipoint TLS over L2 core
(EMS)
• Ethernet access into MPLS/VPN
supported in the MPLS VPN
application
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
22
ISC 3.1: Policy-Based QoS Management
•
New policy-based QoS
application
•QoS policy (profile)
predefinition
•QoS implemented as
separate service
•Constraint matrixbased
implementation to
validate end-to-end
implementation
Customer
2) Match IP Prec/DSCP; Set
MPLS EXP.
Rate-Limit/Police and
Apply Drop Policy
MPLS
Core
•
QoS design
•QoS on access
circuits
•QoS definition for
core-based on smart
template utility
• QoS based on
DiffServ architecture
• QoS implemented
using MQC and nonMQC
MPLS Bandwidth Assured
Layer 2 Services
1) Packet
Classification
Through IP
Prec/DSCP
© 2003, Cisco Systems, Inc. All rights reserved.
3) Invoke QoS
Policy Action
Based on Edge
Classification
(Based on MPLS
EXP), e.g. LLQ,
CBWFQ, Drop
Policy via WRED
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ISC 3.1: QoS Mechanisms
• Traffic classification
• Protocol ID, Src/Dest Addrs., Src/Dest
Ports, Port Ranges, DSCP, IP Prec, L2 CoS
• Marking
• DSCP between 0 & 63
• IP Precedence between 0 & 7
• MPLS Exp between 0 & 7 (when core has
MPLS network)
• Rate limiting
• Class-based single-/dual-rate policer (MQC)
and CAR (non-MQC)
• Shaping
• CB-shaping (MQC), interface-based GTS
(non-MQC)
• FRTS in the context of Frame Relay
• ATM Shaper (vbr-rt, vbr-nrt, abr, cbr ubr)
• Congestion management
• CBWFQ (for Data) + PQ (for voice)
• WFQ (for Data) + PQ (for voice)
• Congestion avoidance
• WRED with DSCP & IP Precedence
• Link efficiency
• LFI over MLPPP
• LFI
over Frame Relay, cRTP
MPLS Bandwidth
Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
24
Agenda
• Announcement
• Background
• Business Drivers/Motivation
• Cisco Bandwidth-Assured Layer 2 Services
What is it?
How is it different?
• Availability/Roadmap
• Summary
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
25
Competitive Positioning
Feature
Competition
Comprehensive interworking
ATM-FR
Limited
Ethernet-FR
Limited
Ethernet-ATM
X
Frame Relay – PPP/HDLC
X
Bridged Interworking (Ethernet)
X
Routed Interworking (IP)
Limited
Martini Signaling based
X
TE features
DiffServ-aware TE support
X
AToM FRR support
X
TE tunnel selection
X
LSP attributes
X
RSVP reliability & scalability
QoS features
WRED, policing
LLQ
PQ Only
Classification on L2 parameters
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
X
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Feature Availability
Feature
Availability
• Any Transport over MPLS (AToM)
Enhancements
Single Cell Relay & Packed Cell Relay – VC & VP Mode
Now
Ethernet over MPLS – Port Mode
Now
Frame Relay to ATM/Ethernet/PPP/HDLC Interworking
Now
Ethernet to ATM Interworking
Now
• Traffic Engineering & Fast Reroute for
Layer 2
Fast Reroute support for AToM
Now
TE Tunnel Selection for AToM VCs
Now
RSVP Reliable Messages & Refresh Reduction
Now
TE LSP Attributes
Now
• QoS Enhancements for Layer 2
Frame Relay QoS
Now
ATM QoS
Now
Ethernet QoS
Now
• IP Solution Center (ISC) 3.1
Now
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
27
MPLS Roadmap
Mass Deployment
Baseline Services
Newer Markets
/ Network integration
Functionality
• Multiservice Applications
• VPLS
• MPLS HA
• Universal
Control Plane
•L2 Interworking
• MPLS + IPsec
•FR to ATM Interworking
integration
•Ethernet to FR/ATM Interworking
•FR to PPP Interworking
•Layer 2 Transport
•ATM over MPLS
•Frame Relay over MPLS
•PPP/HDLC over MPLS
•Ethernet over MPLS
•Protection & Restoration
•Link Protection
•Node Protection
•Scalable VPNs
•Inter-AS
•Carrier Supporting Carrier
MPLS TE – Guaranteed
Bandwidth Service
MPLS FRR
MPLS VPN
MPLS TE
ATM AAL5 over
MPLS
-3 years
MPLS Bandwidth Assured
Layer 2 Services
-2 years
Current
-1 year
© 2003, Cisco Systems, Inc. All rights reserved.
Time
1 year
2 years
28
Agenda
• Announcement
• Background
• Business Drivers/Motivation
• Cisco Bandwidth-Assured Layer 2 Services
What is it?
How is it different?
• Availability/Roadmap
• Summary
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
29
Cisco Leads in the MPLS Market
Americas
EMEA
AsiaPac/Japan
Some 200 Customers (MPLS Core & L2/L3 Edge)
MPLS Bandwidth Assured
Layer 2 Services
EBT
© 2003, Cisco Systems, Inc. All rights reserved.
Korea
Telecom
30
The Cisco IOS Software Advantage
 Shipped MPLS in Cisco IOS Software
release 11.1CT─July 1998
 First to deploy IP/MPLS in a production network
 First to deploy MPLS Traffic Engineering
 First to deploy MPLS VPNs
 First to deploy QoS-enhanced MPLS TE
 First to ship MPLS TE Fast Reroute
 First to ship MPLS Managed Shared Services
 Broadest platform support
 Interoperable solution based in standards
 First to ship MPLS Bandwidth Protection
FIRST to ship MPLS Bandwidth-Assured Layer 2 Services
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
31
Cisco IOS MPLS
Bandwidth-Assured Layer 2 Services
Smarter
The foundation for more
services and more
revenues
Enabling
Innovative
Faster
A flexible QoS framework
to enable migration to a
converged infrastructure
MPLS Bandwidth Assured
Layer 2 Services
Services
© 2003, Cisco Systems, Inc. All rights reserved.
Lasting
Extensibility to different
transports with standardsbased open architecture
for investment protection
32
Summary
• Cisco IOS MPLS Bandwidth-Assured
Layer 2 Services provides:
Improved MPLS Layer 2 functionality that
drives network convergence
Better resiliency with MPLS Fast Reroute for
AToM circuits
QoS guarantees that emulate Layer 2
infrastructure built using L2 VPN QoS & MPLS
Traffic Engineering
• Provisioning of Cisco IOS MPLS
Bandwidth-Assured Layer 2 Services
handled by IP Solution Center 3.1
MPLS Bandwidth Assured
Layer 2 Services
© 2003, Cisco Systems, Inc. All rights reserved.
33