SPOF_v2

BSME ENGINEERNGSingle Points of Failure

Title • 114.Dec.01

Bob Cullen

Manager

CE/BSMEOperations/Engineering (Backbone Systems Management and Engineering)


Definitions

• Passport – TNX-1100 Intra-PoP Trunking– Multiple STM1 Trunks On Different

Cards (2 PNNI STM1 Trunks for FRATM VC Routing + 2 STM1 Trunks for Passport – Passport Logical Trunking)

– STM1 Trunk Cards Serviced By Different Switching Fabrics on the TNX

– DPRS Dynamic Mesh Protection on Passport-Passport Trunks

– PNNI Signaling on All Passport - TNX Trunks

Infonet Global ATMBackbone

Lp/<Card #1> Sdh/0Atmif/1


1B3

1B4


2B3

3B3


TNX-1100 Fabric #1

TNX-1100 Fabric #2

TNX-1100 Fabric #3

STM-1 Dedicated For ATM Logical Trunking(PNNI Signaling Disabled)

STM-1 Dedicated For FRATM VCs(PNNI Signaling Enabled)

"Card #1": Lowest Numbered 3-Port ATM STM1 Card

"Card #2": Highest Numbered 3-Port ATM STM1 Card

Passport LeadSwitch #1


Definitions

• Passport – Passport Intra-PoP Trunking– Dual STM1 Trunks On Different

Cards (2 STM1 Trunks for Passport – Passport Trunking)

– DPRS Dynamic Mesh Protection on Passport-Passport Trunks

– PNNI Signaling on All Passport - TNX Trunks

Infonet Global ATMBackbone



1B3

1B4



2B3

3B3



Lp/<Card #2>Sdh/0Atmif/2




Lp/<Card #1>Sdh/0Atmif/`1






TNX-1100 Fabric #1

TNX-1100 Fabric #2

TNX-1100 Fabric #3

STM-1 Dedicated For ATM Logical Trunking(PNNI Signaling Disabled)

STM-1 Dedicated For FRATM VCs(PNNI Signaling Enabled)

"Card #1": Lowest Numbered 3-Port ATM STM1 Card

"Card #2": Highest Numbered 3-Port ATM STM1 Card



Passport Stub Switch#2

Passport Stub Switch#1


Definitions• Passport - Passport Inter-

Regional Trunking– 2x8/16/32/64Mbps ATM

Logical Trunks On Different STM1 Cards at Core Sites With One Lead Switch

– 2x8/16/32/64Mbps ATM Logical Trunks Terminated on Different Passports at Core Sites With Two Lead Switches

– 2xE1/DS1 Trunks Terminated On Different Cards at Non-Core Regional Sites

– Dynamic Mesh Protection– DPSR Signaling on All

Passport Trunks (Nortel Propriatery Signaling Protocol Similar to OSPF)

Nortel 7480 Passport Switch

2 x 64 Mbps ATM Logical Trunks

2 x 16 Mbps A

TM Logical Trunks

2 x 1.984 Mbps

2 x 1.984 Mbps

2 x 1.984 Mbps


Definitions

• FR PVC Path Resiliency– FR SPVCs

Automatically Rerouted Around Backbone Outages

– DPRS Signaling Supports SPVC Automatic Path Rerouting Following Outage

– DPRS Signaling Supports PVC Path Re-Optimization (Restoration to Primary Path Once Outage is Cleared)



2 x 16 Mbps A

TM Logical Trunks

2 x 1.984 Mbps

2 x 1.984 Mbps

2 x 1.984 Mbps

FR PVC

FR PVC


Definitions

• Marconi ASX-4000 Switch System Resiliency– Redundant Controller

Cards– Redundant AC Power

Supplies– Redundant Switching

Fabrics– Port Protection

Supported (Linear APS)– Card Protection

Supported– Redundant Ethernet

Management Ports


Definitions• Marconi TNX-1100 Switch

System Resiliency– Redundant Controller Cards– Redundant AC Power

Supplies– Redundant Timing Control

Modules– Multiple Independent

Switching Fabrics– Port Protection Supported

(Linear APS)– Card Protection Supported– Redundant Ethernet

Management Ports


Definitions

• ASX-4000 – ASX-4000 Inter-Regional Trunking– Multiple

STM1/STM4 Trunks On Different Cards

– STM1/STM4 Trunk Cards Serviced By Different Switching Fabrics

– Dynamic Mesh Protection

– PNNI Signaling on All ASX – ASX Trunks

622

Mbp

s

622

Mbp

s

622

Mbp

s

622

Mbp

s

ASX-4000 ATM Switch

TNX-1100 ATM Switch

4 x 155Mbps

4 x 155Mbps

4 x 155Mbps

622 Mbps

622 Mbps

622 Mbps

622 Mbps

622 Mbps

1 x 155Mbps

1 x 155Mbps

1 x 155Mbps


Definitions• ASX-4000 – TNX-

1100 Inter-Regional Trunking– Multiple STM1

Trunks On Different Cards

– STM1 Trunk Cards Serviced By Different Switching Fabrics on Both the ASX and the TNX


– PNNI Signaling on All ASX – TNX Inter-Regional Trunks

622

Mbp

s

622

Mbp

s

622

Mbp

s

622

Mbp

s

ASX-4000 ATM Switch

TNX-1100 ATM Switch

4 x 155Mbps

4 x 155Mbps

4 x 155Mbps

622 Mbps

622 Mbps

622 Mbps

622 Mbps

622 Mbps

1 x 155Mbps

1 x 155Mbps

1 x 155Mbps


Definitions• ASX-4000 – TNX-

1100 Intra-PoP Trunking– TNX and ASX Within

the Same PoP Connected Through 2 x STM4 Trunking

– 2 x STM4 Trunks on Different Cards on Both the ASX and the TNX

– 2 x STM4 Trunk Cards Serviced By Different Switching Fabrics on Both the ASX and the TNX

– PNNI Signaling on All ASX – TNX Intra-PoP Trunks

622

Mbp

s

622

Mbp

s

622

Mbp

s

622

Mbp

s

ASX-4000 ATM Switch

TNX-1100 ATM Switch

4 x 155Mbps

4 x 155Mbps

4 x 155Mbps

622 Mbps

622 Mbps

622 Mbps

622 Mbps

622 Mbps

1 x 155Mbps

1 x 155Mbps

1 x 155Mbps


Definitions• ATM SPVC Path

Resiliency– ATM SPVCs

Automatically Rerouted Around Backbone Outages Within 2 – 3 sec

– PNNI Signaling Supports SPVC and SPVP Automatic Path Rerouting Following Outage

– PNNI Signaling Supports SPVC and SPVP Automatic Path Re-Optimization (Restoration to Primary Path Once Outage is Cleared)

622

Mbp

s

622

Mbp

s

622

Mbp

s

622

Mbp

s

ASX-4000 ATM Switch

TNX-1100 ATM Switch

4 x 155Mbps

4 x 155Mbps

4 x 155Mbps

622 Mbps

622 Mbps

622 Mbps

622 Mbps

622 Mbps

1 x 155Mbps

1 x 155Mbps

1 x 155Mbps

ATM SPVC


Definitions• TNX-1100 – Passport

Intra-PoP Trunking– 2 x STM1 Trunks

On Different Cards– 2 x STM1 Trunk

Cards Serviced By Different Switching Fabrics on TNX


– PNNI Signaling on 2xSTM1 TNX – Passport Trunks

Infonet GFRNetwork

622

Mbp

s

622

Mbp

s

ASX-4000 ATM Switch

TNX-1100 ATM Switch

4 x 155Mbps

622 Mbps

622 Mbps

1 x 155Mbps

1 x 155Mbps

155 Mbps

155 Mbps

FRNNI

FRATM

Nortel 7480 PassportSwitch

FRATM VC

FRATM VC

1 x 155Mbps


Definitions• FRATM SPVC Path

Resiliency– FRATM SPVCs

Automatically Rerouted Around Passport-TNX Outage and Around TNX-TNX Backbone Outages Within 2 – 3 sec

– PNNI Signaling Supports FRATM SPVC Automatic Path Rerouting Following Outage

– PNNI Signaling Supports FRATM SPVC Automatic Path Re-Optimization (Restoration to Primary Path Once Outage is Cleared)

Infonet GFRNetwork

622

Mbp

s

622

Mbp

s

ASX-4000 ATM Switch

TNX-1100 ATM Switch

4 x 155Mbps

622 Mbps

622 Mbps

1 x 155Mbps

1 x 155Mbps

155 Mbps

155 Mbps

FRNNI


FRATM VC

FRATM VC

1 x 155Mbps

FRATM


Definitions• Passport FRATM

Card Lack of Resiliency– Passport FRATM

Card is a SPOF

Infonet GFRNetwork

622

Mbp

s

622

Mbp

s

ASX-4000 ATM Switch

TNX-1100 ATM Switch

4 x 155Mbps

622 Mbps

622 Mbps

1 x 155Mbps

1 x 155Mbps

155 Mbps

155 Mbps

FRNNI

FRATM


FRATM VC

FRATM VC

1 x 155Mbps


Definitions

• Ciena K2 ADM System Resiliency– Redundant Controller Card– Redundant DC Power Supply– Redundant Ethernet

Management Ports– Port Protection Supported

(Linear APS)


Definitions• Ciena CI ADM System

Resiliency– Redundant Controller Card– Redundant DC Power

Supply– Redundant Timing Card– Redundant Switching

Cards– Redundant Ethernet

Management Ports– Port Protection Supported

(Linear APS)– Card Protection Supported

(Linear APS)


Definitions

• K2 – K2 Trunks– Dual OC48 Trunks on

Different Cards – Resilient Ring Protection– BLSR Protection on K2-

K2 Trunks

CH #1

IPOP #1

Ciena CoreDirector CI ADM

Ciena K2 MetroDirector ADM

Infonet IVSDCN Network

IVS PE


OC-48UPSR

OC-48BLSR

IPOP #2

CH #2

IVS PE

2 x OC-48(Meshed Protection)

OC-48UPSR


Definitions

• CI-K2 Connectivity – Dual OC48 Trunks on

Different Cards– Resilient Ring Protection – UPSR Protection on CI-K2

Trunks

CH #1

IPOP #1


Ciena K2 MetroDirector ADM


IVS PE


OC-48UPSR

OC-48BLSR

IPOP #2

CH #2

IVS PE

2 x OC-48(Meshed Protection)

OC-48UPSR


Definitions• CI-CI Connectivity

– Multiple OC48 Trunks on Different Cards

– OC48 Trunk Cards on Different Line Modules


– OSRP Signaling on CI-CI Trunks (Ciena Proprietary Similar to PNNI)

2 x 2.5 Gbps - 1310 nm


Ciena K2 MetroDirector ADM2 x 2.5 Gbps - 1310 nm

2 x 2.5 Gbps - 1310 nm

2 x 2.5 Gbps - 1310 nm

2 x 2.5 Gbps - 1310 nm

2 x 2.5 Gbps - 1310 nm 2 x 2.5 Gbps - 1310 nmSTM1

STM1

AU4 SNC


Definitions• CI-CI Connectivity

– Circuits Dynamically Rerouted Around CI Trunk Outage Within 100 to 500 msec

2 x 2.5 Gbps - 1310 nm

STUCH1


Ciena K2 MetroDirector ADM2 x 2.5 Gbps - 1310 nm

2 x 2.5 Gbps - 1310 nm

2 x 2.5 Gbps - 1310 nm

2 x 2.5 Gbps - 1310 nm

2 x 2.5 Gbps - 1310 nm 2 x 2.5 Gbps - 1310 nmSTM1

STM1

AU4 SNC


Spreadsheet


Questions

SPOF_v2

Documents

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