Cisco PONC 2015
Ramesh Pillutla
Product Line Manager, OSTG
March 2015
• Aging SDH Infrastructure
• Packet Traffic is Growing
• OTN is good for Private Line, No Statistical Multiplexing
• SDH Evolution requires Legacy to be accomodated
• Co-Existence of Legacy SDH/PDH, OTN & GreenField Packet Services
• Transport Operational Model – Resiliency, OAM&P
• Next-Gen Transport requires Programmability, Scalability
NCS 4k Use Case Evolution – Not Revolution !
Touch-less ROADM/DWDM underpinning TDM (SONET/PDH) Circuit Emulation, Packet and OTN
with Agnostic switching to enable Network Convergence
Cost Drivers
Packet Optical architecture can save from 56% to 71%
Reliant on static provisioning and legacy services
Ethernet/IP Cost Structure
0%
20%
40%
60%
80%
100%
Point to Point Point to Multi-point
Mult-point toMulti-point
SONET/SDH
Packet
Is the transition going to
provide savings ?
N x GigE
< 10% Utilization
Metro
SDH ADM
(MSPP)
SDH ADM
(MSPP)
SDH Large
Aggregation
(MSPP) GigE Access
$1 per
Access port
$3 per
MSPP
DWDM Cost per
Wavelength $10
Per lambda Large Aggregator
$100 Under-utilized
Router ports
$$$$
SDH/SDH Cost Propagation
SP CO SDH Migration Voice
Switch
ULH Optical
Transport
Trib
Shelf
E1/E3 IP
Networks
Legacy
PSTN
IP
Router
DCS
Access &
Agg Metro
Core
STMn
STM64 STM-n
Ethernet
STMn POS
ChSTM4/Ch
STM16
STMn
ATM/FR
(CBX)
STMn
E1/E3
ADM E1/E3
Mux ADM ADM ADM
DCS
ULH Optical
Transport
E1/E3 IP
Networks
Legacy
PSTN
IP
Router Access
& Agg Metro
Core
STMn
Ethernet
STMn POS
ChSTM4/Ch
STM16
STMn
ATM/FR
(CBX) NCS
42xx
NCS
42xx
Local E1/E3
NCS
4009, 4016
10 Gig/
100 Gig
N x 10 Gig/
100 Gig
E1/E3
E1/E3
ODU Statistical Multiplexing
SDH
SDH
10 GigE
100 Gig
DWDM
Coherent
N x 10 Gig OTN over DWDM
ODUFlex
ODU1
ODU-2/2e
E1/E3/STS
ODUj/ ODUk
GigE
ODU-2/2e
ODUj/
ODUk
Under-utilized GigE/10 GigE Under-utilized 100 GigE
OTN Only provides no Statistical Multiplexing
POS
Private Line Private Line Private Line Private Line
SDH
SDH
10 GigE
100 Gig
DWDM
Coherent
N x 10/100 Gig Stat-
Muxed OTN over
DWDM
ODU-2/2e E1/E3/STS
ODUj/ODUk
GigE
ODUj/ODUk
Tunably Utilized GigE/10 GigE Tunably Utilized 100 GigE
Packet
Processing
Packet
Processing
ODUj/
ODUk
L2/ MPLS
L2/ MPLS
Statistical Multiplexing with L2/MPLS
POS
Private Line Private Line
Private Line Private Line
SDH Mobile Backhaul Migration
• Legacy 2G SDH Switches
• E1, E3, STM1, STM4 Access
• STM16/STM64 Transport
• DWDM Wavelength Services
E1
E3
STM1
STM4
2G
CellSite
2 x
STM64
N x STMn
Large
SDH
Agg
N x
STM64
OTN
Switch
SDH ADM
• Accommodates 2G LTE
• Recoverable Circuit Emulation
• STM16, STM64 N x 10 GigE
• Unlock Value from DWDM
• Combine OTN Switch/SDH Agg
into 1 NE
E1
E3
STM1
STM4
2G 4G,
LTE
Migration
N x 10 Gig
(MPLS Transport)
NCS 4009/16
OTN Switch
10 Gig Aggregation
100 Gig
NCS 42xx
DWDM
Transport
Circuit Emulated TDM Pseudowires
ATM Switch Migration
• Legacy ATM Switches
• Frame Relay Applications
• E1, E3, STM1, STM4 Access
• STM16/STM64 Transport
• Leased Dark Fiber
• DWDM Wavelength Services
E1
E3
STM1
STM4
Legacy
ATM Switches
2 x
STM64
N x STM16
Large
SDH
Agg
N x
STM64
OTN
Switch
SDH ADM
• Accommodates ATM/ FR
Transition to Ethernet
• Recoverable Circuit Emulation
• STM16, STM64 N x 10 GigE
• Unlock Value from Leased
Transport
• Combine OTN Switch/SDH Agg
into 1 NE Change port to Ethernet
When ATM Switches are
replaced
E1
E3
STM1
STM4
Legacy
ATM Switches
N x 10 Gig
(FlexLSP)
NCS 4009/16
OTN Switch
10 Gig Aggregation
100 Gig
NCS 42xx
Leased
Transport
Circuit Emulated TDM Pseudowires
Utility Use Case
• SDH used for Teleprotection
• SCADA aggregated to E1
• E1 Circuit Emulated over
MPLS-xx/Carrier Ethernet
interface
• Latency/jitter/symmetry for
Teleprotection between Tele-
protection routers Latency: less than 5ms (RTT less
than 10ms)
Jitter: less then 0.5ms.
Symmetric traffic: |A to B| - |B to A| <
1ms
• Restoration after single
link/node failure less than
50ms
• Frequency and time delivered
to TPR sites (1588v2)
Sub-Station
Native SDH/SDH, Ethernet-over-SDH
E1,E3
IP/MPL
S
Tele-Protection
& SCADA
Voice, Video,
Data
Sub-Station
Radio
Sub-Station
E1/E3
SDH ADM
SDH ADM
SDH ADM
Large
SDH
Agg
E1
E3
Ethernet
IP/MPL
S
Scada
Controller
IP/MPL
S
SDH
Sub-Station
FlexLSP, Carrier Ethernet E1, E3
IP/MPLS
Tele-Protection
& SCADA
Voice, Video,
Data
Sub-Station
Radio
Sub-Station
IP/MPLS
NCS 42xx
NCS 42xx
NCS 42xx
NCS
4009/16
NCS
4009/16
E1 CEM
E3 CEM
Ethernet
IP/MPL
S
Scada
Controller
E1, E3
NCS
42xx
NCS
Solution
Packet Optical vs Routing
Packet
Optical
• IPv4 / IPv6 / MPLS
Forwarding
• Bridging
• L2VPN
(VPWS/VPLS)
• OTN/DWDM
• Legacy TDM
• Transport Opex
Model
• Converged
Transport Edge
• Carrier Class
Router
• MPLS, Bridging
• Subscriber
Management
(BNG)
• Full L3VPN
Provider Edge
• Full Internet Table
Routing
• Router Opex
Model
• Service Edge
• L3 Scale
Full
Spectrum
Routing at
Scale
BGP
L3VPN
BNG
Multicast
L2VPN
ISIS
OSPF
SR-TE
QoS
Y.1731
CFM
EFM
OTN
DWDM
Packet
Optical
Limited
L3 Scale
MPLS
IPv6
NCS Convergence NCS 4k Converged Transport Edge – Address Converged POTS Applications,
Enable Cloud Computing Infrastructure, Virtualized Service Layer, Accommodate
Legacy, Migrate SONET/SDH, MultiLayer Management
SDN Enabled
IP/MPLS
MPLS-TP Virtualization
Carrier Ethernet
DWDM
Packet
SDH SDH
OTN Convergence
Some Feature Overlap at L2/L3
Packet Optical does not require
Router scale
Packet Optical
NCS 4000v
NCS 4009
NCS 4016
Full L0/L1
Strong
Carrier
Class, Mgmt
Routing
ASR 901
ASR 903
ASR 9001
ASR 9000v
Strong L2/L3
Depth/Breadth
CLI
MPLS Transport Characteristic MPLS-TP FlexLSP IP/MPLS
Ethernet
Eline (10GE)
Eline (GE)
Eline (Sub GE/10GE)
E-Tree
E-LAN
Legacy Transport
F/R
ATM
TDM
IP Services
L3VPN
L3 Unicast
L3 Multicast
Content
General
Traffic Engineering EMS-Driven
50ms restoration (1:1 LSP Protection)
Scalability
Multiplexing Technology Statistical Statistical Statistical
UNI processing Rich Rich Rich
Granularity Variable Variable Variable
Programmable (SDN Enablement)
EMS-Driven
RSVP-TE Extensions
RSVP-TE Extensions
MPLS-TP • OAM
• Forwarding
• Protection
2011
FlexLSP • TP OAM
• Forwarding
• Protection
• SDN Enablement
2013
Standard IETF MPLS
RFC’s
Programmable Ethernet Transport
Orchestration
Infrastructure
Applications
Unified MPLS / FlexLSP Telco Cloud
NfV (Virtualisation) Segment Routing
Open APIs
nLight: IP Optical Integration
Open APIs
Programmable
Ethernet
Transport
Multidegree
CDC
ROADM
• Predictable, Deterministic
Transport-Centric (1:1 LSP
Redundancy)
• Resiliency – Sub-50 msec
• Rich OAM
Fault Propagation,
Connectivity Verification
(MPLS-TP)
• Statistical Multiplexing
• Programmable
(RSVP-TE Extensions)
• MPLS Scalability
FlexLSP is evolution of MPLS-TP to accommodate Programmability of the
MPLS Transport function and full compatibility with existing MPLS
implementations
Legacy Evolution Circuit Emulation
E1
E3
STMn
HO Fabric
LO Fabric
STMn
SDH ADM
E1
E3
STMn
NCS
OTN
MPLS
Agnostic
Fabric
100 Gig
Coherent
Per-ODU Statistical
Multiplexing
100 Gig Coherent
L2/MPLS
SONET/SDH
OTN
OTN
Fabric
OTN Switch
L2/MPLS
OTU-1
OTU-2
OTU-4
MPLS
NNI GigE
10 GigE
MPLS
Fabric
MPLS Label
Switched Path
(LSP)
PW
E3
En
ca
p
DS1 Service
E1 Service
FlexLSP
Generic Associated Channel (G-Ach)
for Inband MPLS OAM
Pseudowire Muxing
Function
Circuit Emulation
1588v2
FlexLSP
Over
ODU over
DWDM
Network Identifier
MPLS Label
MPLS Label
Switched Path
(LSP)
PW
E3
Encap
Ethernet
Service
802.1
Q, .1
ad
EV
C
G-Ach G-Ach
STS-1/Nc
SPE
VC-3/4 SPE
VT1.5 SPE
VC-11/12 DS1 Service
E1 Service
STS-1/Nc
SPE
VC-3/4 SPE
802.1
Q
802.1
ad
Ethernet
Service
SDH Ethernet Mapping
Network Identifier
STS/VC number
SONET
SDH
over
DWDM
GF
P-F
/ HD
LC
E1/E3 approximately
Equivalent to Pseudowire
STS-N/VC-3/4 approximates
an LSP
SA
ToP
CE
oP
Legacy Accomodation
Circuit Emulation Use-Cases
E1 E1 1 E1
E1 E3
2 E1
E1
E3 E3
3 E1
E3 E3 E1
4
E1
E1
ChSTM1/
ChSTM4
ChSTM1
/ChSTM
4
ChSTM1/C
hSTM4 ChSTM1/
ChSTM4
E3 E3 5 E3
E3 ChSTM1/
ChSTM4
6 E3
E3
7
E3
E3
ChSTM1/
ChSTM4
ChSTM1/
ChSTM4
ChSTM1/
ChSTM4
ChSTM1/Ch
STM4
Circuit Emulation
Technology
Applicable Standard TDM Service
Support
Encapsulation Options Emulated Services Timing Requirements
SAToP RFC 4553 Unframed IP/UDP, L2TPv3 and
MPLS
Low Order (E1/E1/E3/E3) None
CESoP RFC 5086 Framed,
Channelized
IP/UDP, L2TPv3 and
MPLS
Low order and high Order
(OC/STM)
Required
CESoETH MEF 8.0 Unframed, Framed,
Channelized
Native Ethernet Low Order (E1/E1/E3/E3) Required for Structure Aware
1 5
NCS Technology Agility
Single Management Umbrella
SDN-Ready Control Plane
Ethernet
Private
Line Virtualized Service Layer
Service Mapping
Logical L2+ Topology O-SNCP, 1+1 APS
Topology Logical Topology
Physical Topology
Programmability
ODU
MPLS Transport
MEF 2.0 L2VPN
(VPWS, VPLS)
Circuit Emulation
(TDM, ATM, Frame
Relay)
Layer 1
MPLS
Transport
Layer 2+
Services
DWDM Layer 0
GigE, 10 GigE,
100 GigE
OTN GMPLS
Control Plane
Service Orchestration
DWDM GMPLS
Control Plane
Multi Layer Data Plane
Control Plane
Extension (RSVP-TE)
(TP, TE, FlexLSP
Tunnels)
ODU Tunnel
SDH, OTN, SDH
Ethernet
• Graceful Transition of Legacy Solutions
• Evolve to Multi-Layer Convergence - – Technology Agnostic
• Virtualized Service Layer -
• Converged Packet Optical Transport System – Keep Transport Operational Model
• Agile and Flexible Transport Network
Summary