© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 1
CRS-1 MultichassisOverview
Enrique Silva
© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 2
IP PoP Evolution
1990s 1992s 1995s 1998-99 2000-02 2003-future1990s 1992s 1995s 1990s 1992s 1995s 19981998--99 200099 2000--0202 20032003--futurefuture
SharedFDDI Ring
FDDISwitchXX XX
POS
EthernetATM
POSPOS
POS
GSRGSRGSRGSR
Cisco 75XX
Cisco 75XX
Cisco 75XX
Cisco 75XX
Cisco 75XX
Cisco 75XX
Cisco 75XX
Cisco 75XX
Cisco 75XX
Cisco 75XXDPT
C7200 C12000 CRS-16 G/s1 G/s 10G/s 320G/s 1 T/s 4 T/s 92 T/s
Historically, scaling a POP is always a challenge
POP consolidation leads to converged core, peering, and edge functions
High Availability is one of the keys to PoP consolidation
CRS-1 Multi-chassis provides a long lasting system that scales without forklift upgrades
© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 3
CRS-1 Product Family
Common Hardware and Software across CRS-1 product family
Modular mid-plane design – improved sparing efficiencyShared Port Adaptors for cross product family investment protection
CRS-1 Forwarding Engine Card
CRS-1 Interface Module
CRS-1 SPA Interface
Port Adaptor
320 Gbps 640 Gbps 1.2 Tbps 1.2 Tbps to 92 Tbps
© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 4
Cisco CRS-1 Line Card OverviewPacket Flow Summary
MODULAR SERVICES CARD PLIM
MID
PLA
NE
MID
PLA
NE
CPUSquidGW
OC192Framer and Optics
OC192Framer and Optics
OC192Framer and Optics
OC192Framer and Optics
OC192Framer and Optics
OC192Framer and Optics
OC192Framer and Optics
OC192Framer and Optics
Egress Packet FlowFrom Fabric
Interface Module ASIC
RX SPPL3 EngineRX SPP
L3 EngineIngressQueuingIngressQueuing
TX SPP L3 EngineTX SPP
L3 EngineFrom Fabric ASIC
From Fabric ASIC
EgressQueuingEgress
Queuing
4
1
8
765
23
© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 5
IP NGN Network Convergence
Device consolidationLess interconnecting interfacesSimple control plane management (Routing)Secure Domain Router (SDR) to partition logically the system in functional areas
High Availability In Service SW UpgradeNo pkt loss (NSF)No Routing Disruption (NSR)Process RestartRP SwitchoverHitless SW and HW upgrades and migration
Service B
Service A
Peering
Core
Peer Peer
BusinessResidential
TransponderTransponder
Peer Peer
ResidentialBusiness
Optical WANIP/MPLSCore
Services Edge
Distri-bution
Peering
Optical
Today’s Architecture Architecture with SDRs
Access
© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 6
Ottawa R&D Centre - CRBU HW / SW Development and Testing
CRS-1 HW CRS-1 SW
1xOC768 (40 Gps) ASIC drivers
Forwarding SW FIB (CEF)
ASIC Forwarding Engine Micro Code
VPN & MPLS technologies test
IP and Forwarding test
Scalability and Performance test
1xOC768 (40 Gps) DWDM
4xOC192 (10 Gps)
4x10GE DWDM
8x10GE VPLS
Route Processor for 8 slot chassis
GMPLS
IOS-XR common Software (PI)
MPLS LDP
MPLS TE (and FRR)
MPLS L3VPN
6PE / 6VPE
© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 7
Cisco CRS-1 ScaleBuilt to Last
100m
Up to 72 Line Card Chassis can be
interconnected for 92T capacity
Fabric priority is maintained across multi-shelf system
Up to 8 Fabric Chassis can be interconnected
without requiring forklift upgrades
Fabric can be upgraded without service disruption
Note: CRS-1/8 multichassis support on roadmap
© 2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 8
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