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A case of rate-limiting o...

A case of rate-limiting on PW and tunnel Highlighted

Created: Oct 7, 2021 12:15:44Latest reply: Oct 11, 2021 18:30:56 535 18 5 0 0

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Hello everyone!

Today, I'd like to share a case of rate-limiting on PW and tunnel.

Problem Description

A user has reported the following problem:

The throughput of the OptiX OSN 1800 does not meet the requirements during the PW and tunnel rate-limiting test.

Process：

A user sets the rate limit of the PW and tunnel to 300 Mbit/s respectively when configuring PWE3 services (the UNI port is a hybrid port) and sends common IP packets using the tester. However, no matter which rate limit mode is used, the throughput of packets reaches 306 Mbit/s.

Problem Analysis

Use the same services and QoS configuration on the live network to perform the throughput tests in the lab. Topology of the lab:

1. Configure a PWE3 E-Line service between NE1 and NE2 based on the configuration of the faulty NE on the live network. Set the tunnel rate limit to 300 Mbit/s. Use the Spirent TestCenter to test the RFC 2544 throughput. Check whether the maximum throughput exceeds the configured tunnel rate-limit bandwidth.

2. Delete the tunnel rate limit configuration and set the PW rate limit as 300 Mbit/s. Use the Spirent TestCenter to test the RFC 2544 throughput. Check whether the maximum throughput exceeds the configured PW rate-limit bandwidth.

Experimental procedure

1. Configure a PWE3 E-Line service between NE1 and NE2 based on the configuration of the faulty NE on the live network. Set the tunnel rate limit to 300 Mbit/s. Then select the RFC 2544 test function of the Spirent TestCenter and use the IP packets to run this test. The Spirent TestCenter RFC2544 test result is shown below:

2. Delete the tunnel rate limit configuration and set the PW rate limit as 300 Mbit/s. Use the Spirent TestCenter to test the RFC 2544 throughput.

The Spirent TestCenter RFC2544 test result is shown below:

According to the experimental data and the following formula, the channel performance meets the requirements.

Root Cause

Inappropriate test methods and instruments are used by the users.

Solution

It is recommended that the user adopt a scientific test method and use the instruments produced by authoritative manufacturers.

For more information, please click: How to calculate the efficiency of transmission PWE3 service

Thank you!

The post is synchronized to: Singapore Technical Discussion Group Partner Technical Support Services Group Middle East Engineer Technical Group Transmission O&M World

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Vlada85

MVE Author Created Oct 7, 2021 20:58:49

Thank you for sharing!

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liqiang185 Created Oct 8, 2021 02:47:54 (0) (0)
Thank you for your support, my friend!

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^3#

wissal

MVE Created Oct 11, 2021 15:31:51

Very well explained case! Thanks a bunch.

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^4#

wissal

MVE Created Oct 11, 2021 15:32:20

@IndianKid @umaryaqub @LuizPuppin @shakeela @NTan33 @smileymind @Saqib123 @Malik3000 @yogijain @lucian2003 @WalidNawar_PDAC_MVE @BAZ @Ihteshamraza @sohaib.ansar @daniellima @chantha @VinceD @abood_1419 @Herediano @Navin_kay @alopez @csk99 @andersoncf1 @MahMush @Unicef @sachandio @Diego.Silva

You are welcome to leave a message

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Malik3000 Created Oct 11, 2021 16:06:45 (0) (0)

shakeela Created Oct 11, 2021 16:28:00 (0) (0)

Saqib123 Created Oct 11, 2021 16:50:37 (0) (0)

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^5#

Malik3000

MVE Created Oct 11, 2021 16:07:07

Thanks for sharing

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sabahshahzad Created Oct 11, 2021 16:32:48 (0) (0)

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^6#

Ahmed_48 Created Oct 11, 2021 16:20:29

Thanks

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sabahshahzad Created Oct 11, 2021 16:32:55 (0) (0)

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^7#

shakeela

Created Oct 11, 2021 16:27:51

Thanks for sharing

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sabahshahzad

Created Oct 11, 2021 16:31:41

Thank you for sharing!

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sabahshahzad

Created Oct 11, 2021 16:32:11

A case of rate-limiting on PW and tunnel-4214531-1

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^10#

Saqib123

Created Oct 11, 2021 16:50:23

Thanks for sharing

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