Ethernet over SDH
2
Multi-Service Platform
Ability to handle SDH, PDH, SAN,Ethernet & WDM on a common platform for efficient presentation, switching, aggregation & transport over NG-SDH
Highly flexible 2M – STM64 TDM interfaces Full non-blocking VC-12 Switching 20G (128x128STM-1)- 60G (384x384 x STM-1) Flexible “Any port in Any slot” type Architecture Data bus enables the SMA16-64 as data centric hub Highest Port density to reduce costs Use of SFP technology to increase flexibility and reduce costs
Virtual Private LAN
Internet Access
Ethernet Leased Line
Storage Area Network
Legacy TDM Services
Single MSP Platform
Optical Network
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Flexible Mapping Benefits
LCAS (Link Capacity Adjustment Scheme) Variation of the link capacity in units of
VC12, VC3 or VC4, as appropriate Ability to ‘re-use’ protection bandwidth
GFP (Generic Framing Procedure) Support for multiple protocol traffic Standardisation provides component
cost savings
Traffic Rate
Ethernet
Aggregate
N x VC
as re
quired
Bandwidth
Virtual concatenation Allows more granularity for network
efficiency Delivers Ethernet services flexibly
without the need to upgrade intermediate nodes
Diverse routing means more efficient use of bandwidth
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SDH MUX
40Mbit/s
40Mbit/s
40Mbit/s
Using LCAS on unprotected links
SDH MUX
20Mbit/s
20Mbit/s
20Mbit/s
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ATM
IP
ServicesVoice Data
SONET/SDH
WDM
Fibre
MPLS
Optical Data Unit (ODU)
Frame Relay
GFP
EthernetSAN
GFP enables us to map Ethernet Frames into SDH Virtual Containers
EoSDH GFP, LCAS & VCAT An Ethernet frame
can consist of multiple IP packets
GFP
VC
6
6Mbit/s
LAN
Flexible assignment of link bandwidth using Virtual Concatenation
Traffic
Rate
Ethernet
Aggregate
N x VC
as re
quired
Bandwidth
VCAT assigns the bandwidth efficientlyEthernet
Speed
10/100/1000Mbit/s
6Mbit/s
Customer Bandwidth
6Mbit/s
LAN
GFP
SDH allocation
VC-12
VC-12
VC-126Mbit/s
Network
VC-12
VC-12
VC-12
VC-12
VC-12
VC-12
EoSDH GFP, LCAS & VCAT
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Customer Bandwidth
6Mbit/s
LAN
6Mbit/s
LAN
Ethernet Speed
10/100/1000Mbit/s
6Mbit/s
GFP
SDH allocation
VC-12
VC-12
VC-126Mbit/s
Network
VC-12
VC-12
VC-12
VC-12
VC-12
VC-12
EoSDH GFP, LCAS & VCAT
Flexible adjustment of link bandwidth - in service, using LCAS
Week 1 Week 2 Week 3 Week 4
Provisioned 6Mbit Ethernet
Service
Scheduled additional 4Mbit 10Mbit
Ethernet Service
LCAS allows for the flexible adjustment (addition or
removal) of provisioned bandwidth Customer
wants extra
2Mbit/sVC-12
Extra capacity added to link
VC-12
8Mbit/s
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L2 Aggregation Card Provides point-to-multipoint functionality
Acts as hub or ‘switch’ for PacketSpan customer located products Introduces new services when the market is ready Provides functionality from the core, not from every box in the deployment -
lowers cost throughout, especially when upgrades are needed Dramatically reduces the cost of interfaces on SDH & data side Single tributary card much cheaper than overlay equipment, no new
training/personnel or NMS needed Standard GFP, Virtual Concatenation (with LCAS and HO/LO SDH support) QoS options (committed rate, best effort etc) allowing differentiated & prioritised
servicesLayer 2 Aggregation tributary card
2 port GigE, 4 port FastE trib card for SMA Series 1.2, 3, 4 & MSH11CP,C, 41C, 51C & 64 (STM-16 version also for MSH51C/64)
2 port GigE, 16 port FastE trib card for OMS1664 8 Fast/GigE port layer 2 trib card for OMS3240/50
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Reducing core networking equipment costs
LAN
LAN
LAN
LAN
LAN
LAN
LAN
LAN
Without PacketSpan Layer 2 Aggregation
SDH Mux
PacketSpan trib
Router
Ethernet interface
Ethernet link
KEY
PacketSpan Layer 2 aggregation trib
With PacketSpan Layer 2 Aggregation Less router equipment
Less physical linksLess SDH interfaces
LAN LANLAN LAN
PacketSpan Layer 2 Deployment Example
Backbone
Metro Core
Metro Access
Customer Premises
SDH
SDH
LAN
Multiple Interfaces and physical links (EPL Service)
ISP / CustomerHead office
LANLANLAN LAN LAN
PacketSpan Deployment Example
Backbone
Metro Core
Metro Access
Customer Premises
SDH
SDH
Data Aggregation
Layer 2 PacketSpan card
ISP / CustomerHead office
Less Physical links
Less Router Equipment
Less SDH Interfaces
LANLANLAN LAN LAN
ISP / Customer
Head office
PacketSpan Deployment Example
Backbone
Metro Core
Metro Access
Customer Premises
SDH
SDH
Data Aggregation
Layer 2 PacketSpan card
LANLANLAN LAN LAN
ISP / Customer
Head office
PacketSpan Deployment Example
Backbone
Metro Core
Metro Access
Customer Premises
SDH
SDH
Data Aggregation
Layer 2 PacketSpan card
Ethernet shared over single VC’s or VC groups
(EVPL Service)
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PacketSpan 3 (L2 Aggregation) Applications
SDH Network
Head End / End-userHO SDH or
Switch – Router
GFP Mapping
L2 / Aggregation
Switch / Router
PacketSpan ETA/ETS
• Head End Aggregation (pt – multi pt)• Head office to Branch Offices EPL• SDH Protection Switching
Individual VCs per ETA/ETS
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SDH Network
Head End / End-userHO SDH or
Switch - Router
PacketSpan ETA/ETS
• Head End Aggregation (pt – multi pt)• Head office to Branch Offices EVPL• SDH Protection Switching
One VC shared between multiple ETA/ETS cards
GFP Mapping
L2 / Aggregation
Switch / Router
PacketSpan 3 (L2 Aggregation) Applications
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SDH Network
PacketSpan ETA/ETS
• MESH Network (multi pt – multi pt)• Branch Offices EVPL• SDH Protection Switching
One VC shared between multiple ETA/ETS cards
GFP Mapping
L2 / Aggregation
Switch / Router
PacketSpan 3 (L2 Aggregation) Applications
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SDH Network
PacketSpan ETA/ETS
• Multiple MESH Networks Over Multiple Rings• Branch Offices EVPN• SDH Protection Switching
One VC shared between multiple ETA/ETS cards
GFP Mapping
L2 / Aggregation
Switch / Router
SDH Network
PacketSpan L2 Aggregation Applications
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Ethernet and SDH Aggregation
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Ethernet Domain and
Traffic Management
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The ELS1000S card is considered to have three logical domains:
• SDH Traffic Domain of the PacketSpan card.
Logical Domains
• Card Based Domain, i.e. basic hardware/software operation, including maintenance schemes.
• Embedded (Ethernet) Domain.
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ELS 1000S - Overview Block Diagram
TDMswitch
PH
Y
Framer(GFP,
VCG, LCAS)
SDHline
GIGE
FE
ELS 1000S
PacketSwitching
Engine
SMA
Function already available on PacketSpan products
New functionality of layer 2 card
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ELS1000S Card Block Diagram
25
PacketSwitching
Engine
1
2
3
4
5
6
1
24
6 Ethernet
ports
24 SDH Transport Channels (SDH-TC)
Ethernet Switch Fabric
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SDH TC 1
Ethernet Port 1
VPLs
VPLs
VPLs and VPCIs
Ethernet Switch Fabric
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SFP Slot
SFP Slot
SFP Slot
SFP Slot
SFP Slot
SFP Slot
Ethernet Port1
Ethernet Port2
Ethernet Port3
Ethernet Port4
Ethernet Port5
Ethernet Port6
ELALogical
Interface
SDH TC23
SDH TC24
SDH TC22
SDH TC1
SDH TC2
VCG
VCG
VCG
VCG
VCG
VC VC VC
VC VC VC
VC VC VC
VC VC
VC VC VC
VPL
VPL
VPL
VPL
VPLVPL
VPL
VPL
VPLVPL
VPL
VPL
VPL
VPL
Card Functions
Ethernet Switch Fabric
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ELS-1000S Traffic Flow
SFP Slot Ethernet Port SDH TC VCG
VCVC
P
Q
VPL
P
Q
VPL
traffic enters card and is classified as required by VPL configuration
classified frames are handled by policerSLA conformance is verifiedframes are internally tagged (“green, yellow, red”) and optionally discarded
frames are cross-connected to egress pathframe modification (e.g. add VLAN tag) is performed if required queue handles frames according to configured buffer management
traffic leaves card at egress interface
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The Queue
VPLPolicer
VPL Queue
GREEN ONLY
GREEN AND YELLOWQueue Size
Max 4Mbytes 30%
45%
GREEN YELLOW & RED
Of CBS at Policers
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TRIB
LINE
11
2
3
4
5
6
ETHERNET PORTS
SDH
TCs
1
24
SDH Domain Cross Connections, Line card
to Trib card, 5 x VC12s (6-10)
Ethernet Domain Cross ConnectionEthernet port 2 to SDH-TC 3
VC group 3, with VCs 6-10 allocated.
Configuration
3
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Connections - Bandwidth Allocation
Switch
L
I
N
E
E
Trib(s)
L
I
N
E
W
SMA
SWITCH
Ethernet connections
ELS1000S
RIGHT CLICK ON THE CARD
The bandwidth of each card is set as per requirements, but must adhere to the card and slot limitations (see section 02)
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THANK YOU
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