Ethernet Over SDH

Ethernet over SDH

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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


Backbone

Metro Core

Metro Access

Customer Premises

SDH

SDH

Data Aggregation


LANLANLAN LAN LAN

ISP / Customer

Head office


Backbone

Metro Core

Metro Access

Customer Premises

SDH

SDH

Data Aggregation


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


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SDH Network

PacketSpan ETA/ETS

• MESH Network (multi pt – multi pt)• Branch Offices EVPL• SDH Protection Switching


GFP Mapping

L2 / Aggregation

Switch / Router


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SDH Network

PacketSpan ETA/ETS

• Multiple MESH Networks Over Multiple Rings• Branch Offices EVPN• SDH Protection Switching


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

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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


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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


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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

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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

Ethernet Over SDH

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