The growth in popularity of Business Ethernet services is closely linked to the level of maturity Ethernet technology has reached, enabling carriers to deliver and audit hard service level agreement (SLA) guarantees that satisfy exacting requirements from enterprise users. The following presentation shows the benefits of end-to-end service management to ensure customer SLA and better system maintenance

1. Carrier Ethernet Network Solutions:
The Benefits of End-To-End Ethernet
Service Management
April 2011
Ron Agam
Head of Product Management &
Business Development
RAD Data Communications
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 1

2. Differentiate at Customer
Touch-points – Service Life Cycle
Fault
Service On-going
Turn-up Monitoring Management
& Recovery
“When
“Before I start “While It’s
something is not
paying” working”
working…”
Source: E&Y 2010
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 2

3. Reliability of L2 Services
HW Based OAM mechanism
Hardware Software
Feature HW Based OAM Benefits
OAM OAM
Significantly increases number of
Scalability √ X
local and remote MEPs
Rapid detection of connectivity failure √ X Fast failure restoration <50msec
Accurate frame delay & frame delay Provide accurate DV/FDV
√ X
variation measurements
Monitor multiple concurrent flows
Multi-Flow monitoring √ X
simultaneously
Allow line rate loopback for all MTU
Loopback at line rate √ X
sizes, support PRBS string
Accurate frame loss measurements √ X Detect even a single frame loss
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 3

4. Fault Management
Isolation with Layer 2/3 loopback
“Send a packet with “Loopback packets which
VID 100 and IP SA have VID 100 & IP SA
117.155.160.13 12 and 117.155.160.13 + perform
wait for a reply IP & MAC swap”
Network
Tester Carrier Ethernet NID
ETX-204A
• Supports L2 or L3 loopbacks up to line rate
• Can be used for throughput testing across routed/switched networks.
• Flexible loopback criteria:
– SrcDst 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 4

5. Performance Mgt. Accuracy
Delay Measurement Branch A
Headquarters Real Time
PE
UNI EVC Priority Data
Real Time Best Effort
PE
Priority Data EVC 1
PSN
Best Effort EVC 2 Branch B
IP DSLAM Real Time
Real Time
EVC
Priority Data
Priority Data
Best Effort
Best Effort
UNI
SW Based OAM Example
Summary of available Ethernet OAM mechanisms
CPU reaction time: 1ms, variance of Fault Propagation
OAM Technology
End-End/Last Performance
Type
2ms
Segment Monitoring
Delay accuracy of 2ms - typical SLA at 1ms
IEEE 802.3-2005
Single Segment No Link No
(formerly 802.3ah)
IEEE 802.1ag
HW based OAM: ANo
End-to-End
few micro seconds No
Connectivity
ITU-T Y.1731 End-to-End Yes Service Yes
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 5

6. Performance Mgt. Accuracy
Frame Loss Ratio Branch A
Headquarters Real Time
PE
UNI EVC Priority Data
Real Time Best Effort
PE
Priority Data EVC 1
PSN
Best Effort EVC 2 Branch B
IP DSLAM Real Time
Real Time
EVC
Priority Data
Priority Data
Best Effort
Best Effort
UNI
Synthetic Based OAM Example
Summary of available Ethernet OAM mechanisms
- 20Mbps service,Segment frame size results in ~1600Fault Propagation
OAM Technology 1500
End-End/Last Performance
Monitoring
Type PPS
-Approx. 0.01% packet loss and No
IEEE 802.3-2005
Single Segment
required +/-0.1% error No
Link
(formerly 802.3ah)
70 daysEnd-to-End
IEEE 802.1ag
of measurements are required No
No Connectivity
Non-synthetic, HW Based Yes
ITU-T Y.1731 End-to-End mechanism is immediate
Service Yes
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 6

7. On-demand Throughput Testing
Branch A
Traffic Generation
Headquarters Real Time
PE ETX
UNI EVC Priority Data
Real Time Best Effort
• Priority Data
Line Rate Traffic Generator
ETX
EVC 1
PE
• Concurrent Multiple2CoS
Best Effort EVC
PSN
Branch B
• L2 path as the service IP DSLAM Real Time
ETX
• Data integrity testing - PRBS
Real Time
EVC
Priority Data
Priority Data
Best Effort
Best Effort
UNI
• 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
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 7

8. Differentiate at Customer
Touch-Points – Service Life Cycle
Service On-going Fault Management
Turn-up Monitoring & Recovery
Connectivity Performance Fault Detection &
Verification Monitoring Isolation
• Ethernet OAM - 802.1ag • Ethernet OAM – Y.1731 • Ethernet OAM – 802.1ag
• Continuity Check • Frame Delay, Frame Delay, Frame • Continuity Check
• MAC Ping Loss • Loopback
• Service availability (G.826) • Link Trace
Diagnostic SLA Threshold Fault Propagation
Loopbacks Reporting & Notification
• Loopbacks • Defining SLA objectives and proactively • Ethernet OAM – Y.1731
• L1 physical interface loopback notified when crossed • Per EVC ‘Forward’ and ‘Backward ’
• L2/L3 Loopback per flow with • Alarms and traps on management Alarm Propagation (AIS and RDI)
MAC/IP swap (up to line rate) system • Dying Gasp indication to active - 802.3ah
• Per port Alarm Propagation
SLA Verification Statistics Collection Resiliency &
Testing Reporting Repair
• RFC-2544 based tests • Collecting SLA statistics • Linear Protection ( “EVC Protection”) - G.8031
• Throughput, Loss and Delay tests • Statistics collection via SNMP or FTP • Ethernet Ring Protection - G.8032
• Data integrity tests (BERT) • port protection based on Link Aggregation -
• Statistics can be used to generate
802.3 (formerly 802.3ad)
• Delay Measurement SLA reports
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 8

9. Tier 1 operator, USA
Services: Retail, Wholesales
and Mobile Backhaul.
• 3rd telecom provider in the US
• EPL and EVPL Services, wholesale
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 9

10. Tier 1 Operator - Europe
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 10

11. About RAD Data Communications
Carriers &
Service Providers
• 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
Mobile Operators Transportation Utilities
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 11

12. Thank You
For Your
Attention
www.rad.com
Carrier Ethernet Network Solutions: The Benefits of End-To-End Ethernet Service Management Slide 12