y1564 webinar material edit

ITU-T Y.1564 Test

For Ethernet Links

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• BERT (Bit Error Rate Test),» Not very effect at testing Ethernet,

• Commonly requested as customers are comfortable with this technology.

• Designed to test audio lines based on the human brain???

• RFC2544,» Commonly referred to as the reference point for testing

Ethernet,• Originally designed for network elements, adopted by telecom

operators.

• MultiStream,» Not a standard but customers confirm the network using it.

• Simple straight forward check of the network.

*No one method is the best, customer dependant*

Types of tests Today.

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Slide 3

• RFC2544» Designed for testing Ethernet networks using

different frame sizes.» Completes several tests (sequentially) including,

• Throughput,› Speed at which the frame size transfers through the network.

• Frame Loss,› Number of fames lost while transferring through the

network.• Latency,

› Time the frame takes to transfer through the network.• Packet Jitter, (not standard)

› The variation of the frame arrival.• Burstability (often not tested),

› Ability of the network to be able to handle burst frames.

» Also defines 2 types of switch reset’s not used by operators.


Ethernet cloud

network

BB

AA

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Slide 4

• MultiStream,» As many end users networks consist of multiple streams of traffic (across the

WAN network) on different VLAN.• Telecom operators simulate this by generating multiple streams.

» Very good for checking CoS (Class of Service),• Confirms the network routing is correct,• Confirms throughput per VLAN,

» Set-up can be complicated depending on network configuration,• Each stream configured independently,• Depending on network configuration the tester configuration requires to be adjusted.

» Results can be complicated to analyze,• Different network configuration mean different thresholds of what is pass or fail.

» Not able to test different frame sizes (elements perform differently).


Edge RouterCustomer Network

Customer Router

Customer LAN

LAN Network

LAN Network

VLAN 1

VLAN 2

VLAN x

LAN Network

Stacked VLAN 1

VLAN 1

VLAN x

Stacked VLAN 2

VLAN 1

VLAN x

Telecom networkAccess Network

MPLS Edge Router

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Slide 5

• Y.1564 was while in draft format within the ITU-T called Y.156sam.» All ITU-T standards are numeral only so they often use

letters at the end until it’s released.• sam at the end of Y.156sam stands for,

» Service Activation Test Methodology.• The full name is “An Ethernet Service Activation Test

Methodology”

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Slide 6

• Completed in two sections,» Service Configuration Test,

• Confirms the network is able to transfer a single streamof frames (Test Flow) at the required configuration confirming the Throughput,

› IR (Information Rate).

• At a fixed frame size or mix of frame sizes.

» Service Performance Test,• Transmits all Test Flows simultaneously at the CIR confirming

no errors over a configured duration.

» Requires Pass / Fail results based on SAC (Service

Acceptance Criteria) information.

Enter Test Parameters

Start Test

Troubleshoot Service

Configuration

Troubleshoot Ethernet Services

Test Completed

Fail

Fail

Pass

Pass

Service Configuration

Test

Service Performance

Test

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Slide 7

• Generate single frame size or an E-MIX (Ethernet MIX) of frame sizes,

» A repeating a mix of different Ethernet frame sizes, i.e; 64 – 128 – 256 – 1024 – 1518.

• Generating at CIR or stepping up to the CIR,» Measuring at each step the IR, FLR, FTD, FDV, FLRSAC,» Confirm all are within the SAC limits before continuing.

• Generate at the CIR + EIR,» Measure the IR, FLR, FTD and FDV .

• Generate at the CIR + 125% * EIR, (Traffic Policing)» Measure the IR, FLR, FTD and FDV .

• CBS and CBS + EBS test completed if required.

• Repeat above measurementsper Test Flow,

» Each Test Flow able to be independently configured,

• Representing different traffic types with different priorities.

• Test duration should be short.


Start Test


Configuration

FailService Configuration

Test

1 to 60 sec

CIR

CIR + EIR

CIR + 125% EIRRED Section

Yellow Section

Green Section

Color ModeTransmission Rate

Testing Time

Transmitted RateGuaranteed

Traffic

Non Guaranteed Traffic

Confirm Traffic Dropped

25%

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Slide 8

• CBS and EBS testing (Experimental / For Study),» Bursting at line rate above the CIR and/or the EIR

confirming the network is capable of handling a short duration of large traffic.

• Ethernet networks often bursts,» Testing the networks flexibility in this way allows for

testing closer to real life network traffic conditions.» Tx at CIR then Stop Tx for a short timeframe,» Tx the largest of to following,

• 1% of CBS,• 1.5 times largest frame,• 0.1% of CIR/8

» Stop Tx for a short timeframe, Resume CIR traffic and Repeat.

• For EBS testing substitute CIR with EIR

1 to 60 sec

CIR

CIR + EIR

CIR + 125% EIRRED Section

Yellow Section

Green Section

Color ModeTransmission Rate

Testing Time

Transmission RateGuaranteed

Traffic

Non Guaranteed Traffic

Confirm Traffic Dropped

Min IFGPre Burst Gap Post Burst Gap GapEIR with EBS

90.91%

100%

EIR

EBS

CBS

CIR

Line Rate

90.91%

100%


Start Test


Configuration

FailService Configuration

Test

EBS

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Slide 9

• Once Service Configuration has passed.• Transmit all Test Flows simultaneously

at the CIR rate,• Measure simultaneously per stream,

» IR, FTD, FDV, FLR and AVAIL,• Testing time should follow the

ITU-T M.2110 standards of,» 15 min,» 02 hour,» 24 hour.

» Test Flow’s can be configured in many different ways.

MAC Data (Payload)

IP Data (Payload)


Start Test


Configuration

Fail

Pass

Service Configuration

Test

Troubleshoot Ethernet Services

Test Completed

Fail

Pass

Service Performance

Test

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Slide 10

• New methodology to test multiple Ethernet services simultaneously in a network (optional)

• RFC 2544 is the standard commonly used today» Originally designed for checking performance of a

network device» Runs one service at a time,

• Tests in a serial manner not running all services simultaneously

Comparison of test methodology

Item ITU-T Y.1564 RFC 2544Designed for Service activation Devices performanceConcurrent services Multiple services simultaneously One service at a timeSimulates A realistic network One service in a networkTesting time Short due to simultaneous test /

serviceLong due to serial nature of test (assuming completed per full standard)

Test result Directly related to SLA requirements

Link performance limit

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Slide 11

• ITU-T Y.1564 completes the testing in two phases» Service Configuration Test

• Confirm each individual service is configured correctly checking, CIR (Committed Information Rate), EIR (Excess Information Rate), FTD (Frame Transfer Delay), FDV (Frame Delay Variation), FLR (Frame Loss Ratio), CBS (Committed Burst Size), EBS (Excess Burst Size).

» Service Performance Test• Transmits one or many Service Configuration Tests simultaneously at the CIR

confirming all traffic is able to traverse the network under the full service load over time.

RFC 2544 completes tests one after another.

Y.1564 completes a quick per service test followed by the performance test.

Configuration Test Performance Test

Note: to scale - Y.1564 spaced for graphical representation Time

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Slide 12

• Up to 32 services supported» 3GPP TS 23.203 defines 9 kinds of QoS Class.

MT9090A can simultaneously perform testing on all classes of service.

QCIResource

TypePriority

PacketDelay

Budget

PacketError Loss

RateExample Services

1

GBR

2 100 ms 10-2 Conversational Voice

4 150 ms 10-3 Conversational Video (Live Streaming)2

3 50 ms 10-3 Real Time Gaming3

4 5 300 ms 10-6 Non-Conversational Video (Buffered Streaming)

5

Non-GBR

1 100 ms 10-6 IMS Signalling

6 6 300 ms 10-6

Video (Buffered Streaming)TCP-based (e.g.,www, e-mail, chat, ftp, p2p file sharing, progressive video, etc.)

7 7 100 ms 10-3

Voice,Video (Live Streaming)Interactive Gaming

8 8300 ms 10-6

Video (Buffered Streaming)TCP-based (e.g.,www, e-mail, chat, ftp, p2p file sharing, progressive video, etc.)9 9

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Slide 13

• MX909060A ITU-T Y.1564 parameters setup tool» Create or modify the configuration for the Y.1564

testing on a PC• Overview all

of parameters in a PC display screen.

• Copy and paste the services

» Provided with MU909060Ax-007 Y.1564 test option

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Slide 14

CMA3000 Y.1564 configuration

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Slide 15


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Slide 16


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Slide 17

• Y.1564 can be completed using two testers or a single tester with a reflector at the far end.» When testing FTD the standard recognizes one way

measurements “SHOULD use synchronization to align their measurement clocks”.

• Clock accuracy and drift over time becomes very important,• As syncing equipment clocks is critical, it’s not normally

practical test in the field.

• It will be possible for testing to be completed via a Master Slave situation or a reflector.» It could also be possible to complete testing with a hard

loopback in appropriate networks.• In this configuration Y.1564 testing becomes less relative.

Thank You,Any Questions.

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Slide 19

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Slide 20

• Question 1• What is test function be release in CMA3000 and

MT9090A GE recently ?

• A. RFC2544• B. Y.1563• C. Y.1564• D. Y.156SAM

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Slide 21

• Question 2• Which test parameter is not standard test

parameter in RFC2544?

• A. Throughput• B. Packet Loss• C. Packet Jitter• D. Packet Delay

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Slide 22

• Question 3• How many multi-stream test traffic can be setting

In CMA3000 and MT9090 GE ?

• A. 10,10• B. 8, 32• C. 32, 8• D. 8, 8

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Slide 23

• Question 4• How many Y.1564 multi-stream test traffic can be

set in CMA3000 and MT9090 GE ?

• A. 32, 32• B. 8, 8• C. 8, 32• D. 32, 8

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Slide 24

• Question 5• What is transmission rate when setting Y.1564

traffic policing test in CMA3000?

• A. CIR• B. CIR+EIR• C. CIR+125%EIR• D. CIR+EIR+CBS+EBS

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Slide 25

• Question 6• What is two test steps in Y.1564 Ethernet test ?

• A. Throughput , Packet Loss• B. Service Configuration test , Service

Performance test• C. CIR , EIR• D. CBS, EBS

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Slide 26

• Question 7• What is additional test function in Y.1564 compare

Anritsu and EXFO ?

• A. CIR,EIR test• B. CBS, EBS test• C. Traffic policing test• D. Service Configuration test , Service

Performance test

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Slide 27

• Question 8• What are test setup can be using Y.1564?

• A. End to End • B. Reflector Mode• C. Point to Multi point • D. Multi point to Multi point

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Slide 28

• Question 9• What is advantages of Y.1564 compare

RFC2544?

• A. Test throughput , packet delay ,packet jitter ,packet loss simultaneously.

• B. Test E-MIX stream• C. Multiple services simultaneously• D. Short test time

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Slide 29

• Question 10• Please match below test name and company ?

• A. Y.156SAM A. ANRITSU• B. Y.1564 B. JDSU• C. IntelliSAM C. EXFO• D. SAMComplete D. SUNRISE

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