Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 1

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service ManagementApril 2011

Ron AgamHead of Product Management &Business DevelopmentRAD Data Communications

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 2

Differentiate at Customer Touch-points – Service Life Cycle

ServiceTurn-up

On-going Monitoring

Fault Management & Recovery

“Before I start paying”

“While It’s working”

“When something is not

working…”

Source: E&Y 2010

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 3

Reliability of L2 ServicesHW Based OAM mechanism

Feature HardwareOAM

Software OAM HW Based OAM Benefits

Scalability √ X Significantly increases number of local and remote MEPs

Rapid detection of connectivity failure √ X Fast failure restoration <50msec

Accurate frame delay & frame delay variation √ X Provide accurate DV/FDV

measurements

Multi-Flow monitoring √ X Monitor multiple concurrent flows simultaneously

Loopback at line rate √ X Allow line rate loopback for all MTU sizes, support PRBS string

Accurate frame loss measurements √ X Detect even a single frame loss

Layer 2 Services Must be

transparent and dependable

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 4

Fault Management Isolation with Layer 2/3 loopback

Network

“Loopback packets which have VID 100 & IP SA 117.155.160.13 + perform IP & MAC swap”

“Send a packet with VID 100 and IP SA 117.155.160.13 12 and wait for a reply

Carrier Ethernet NIDETX-204A

Tester

• Supports L2 or L3 loopbacks up to line rate• Can be used for throughput testing across routed/switched networks.• Flexible loopback criteria:

– Src\Dst MAC, Src/dst IP, VLAN, p bit, DSCP, etc.– Vlan+Mac, VLAN + IP, Vlan+Pbit, etc.

• Non-Intrusive loopback on a dedicated flow – always “on” , with no need to configure the remote NTU

• Ability to loopback many flows simultaneously (on both user & network sides)

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 5

Performance Mgt. AccuracyDelay Measurement

Summary of available Ethernet OAM mechanisms

OAM Technology End-End/Last Segment

Performance Monitoring Type Fault Propagation

IEEE 802.3-2005 (formerly 802.3ah) Single Segment No Link No

IEEE 802.1ag End-to-End No Connectivity No

ITU-T Y.1731 End-to-End Yes Service Yes

SW Based OAM ExampleCPU reaction time: 1ms, variance of 2ms

Delay accuracy of 2ms - typical SLA at 1msHW based OAM: A few micro seconds

PEEVC

Real Time

Best Effort

UNI

PSNEVC 1

EVC 2

Branch A

Headquarters Real Time

Priority Data

Best Effort

UNI

PE

EVC

Branch B

Real Time

Priority Data

Best Effort

Priority Data

Real Time

Priority Data

Best Effort

IP DSLAM

Hardware based

OAM

Micro-seconds

accuracy

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 6

Performance Mgt. Accuracy Frame Loss Ratio

Summary of available Ethernet OAM mechanisms

OAM Technology End-End/Last Segment

Performance Monitoring Type Fault Propagation

IEEE 802.3-2005 (formerly 802.3ah) Single Segment No Link No

IEEE 802.1ag End-to-End No Connectivity No

ITU-T Y.1731 End-to-End Yes Service Yes

PEEVC

Real Time

Best Effort

UNI

PSNEVC 1

EVC 2

Branch A

Headquarters Real Time

Priority Data

Best Effort

UNI

PE

EVC

Branch B

Real Time

Priority Data

Best Effort

Priority Data

Real Time

Priority Data

Best Effort

IP DSLAM

Hardware based

OAM

Micro-seconds

accuracy

Synthetic Based OAM Example- 20Mbps service, 1500 frame size results in ~1600 PPS - Approx. 0.01% packet loss and required +/-0.1% error

70 days of measurements are requiredNon-synthetic, HW Based mechanism is immediate

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 7

PEEVC

Real Time

Best Effort

UNI

PSNEVC 1

EVC 2

Branch A

Headquarters Real Time

Priority Data

Best Effort

UNI

PE

EVC

Branch B

Real Time

Priority Data

Best Effort

Priority Data

Real Time

Priority Data

Best Effort

ETX

IP DSLAM

Traffic Generation

On-demand Throughput Testing

• Create a “birth certificate” at service turn-up• Provide customer with report before service starts• Confirm troubleshooting has succeeded• Period testing for: Preventive maintenance & capacity planning

ETX

ETX

• Line Rate Traffic Generator• Concurrent Multiple CoS• L2 path as the service• Data integrity testing -

PRBS

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 8

Differentiate at Customer Touch-Points – Service Life Cycle

ServiceTurn-up

On-going Monitoring

Fault Management & Recovery

Connectivity Verification

• Ethernet OAM - 802.1ag • Continuity Check• MAC Ping

Diagnostic Loopbacks

• Loopbacks• L1 physical interface loopback• L2/L3 Loopback per flow with

MAC/IP swap (up to line rate)

SLA VerificationTesting

• RFC-2544 based tests• Throughput, Loss and Delay tests• Data integrity tests (BERT)• Delay Measurement

Performance Monitoring

• Ethernet OAM – Y.1731• Frame Delay, Frame Delay, Frame

Loss• Service availability (G.826)

SLA Threshold Reporting

• Defining SLA objectives and proactively notified when crossed

• Alarms and traps on management system

Statistics Collection Reporting

• Collecting SLA statistics • Statistics collection via SNMP or FTP• Statistics can be used to generate

SLA reports

Fault Detection & Isolation

• Ethernet OAM – 802.1ag• Continuity Check• Loopback• Link Trace

Fault Propagation & Notification

• Ethernet OAM – Y.1731• Per EVC ‘Forward’ and ‘Backward ’

Alarm Propagation (AIS and RDI) • Dying Gasp indication to active - 802.3ah • Per port Alarm Propagation

Resiliency & Repair

• Linear Protection ( “EVC Protection”) - G.8031 • Ethernet Ring Protection - G.8032• port protection based on Link Aggregation -

802.3 (formerly 802.3ad)

Managing the Service life cycle is essential to control the OpEx

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 9

Tier 1 operator, USA

• 3rd telecom provider in the US• EPL and EVPL Services, wholesale

Services: Retail, Wholesales and Mobile Backhaul.

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 10

Tier 1 Operator - Europe

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 11

• International vendor of leading access and

backhaul products

• Solutions for carriers, service providers and

enterprise customers

• A wealth of over 160 product lines

• Established in 1981 and privately owned

• Part of the RAD group, 4000 employees with $1B

turnover in 2010

About RAD Data CommunicationsCarriers &Service Providers

Mobile Operators Transportation Utilities

Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 12

Thank You For Your Attention

www.rad.com