Post on 14-Jan-2016
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
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