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What is meant by 'FastPath' and 'Interleaving'? What is a 'Noise Profile'?
Broadband - Internet - ADSL
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What is meant by 'FastPath' and 'Interleaving'? What is a 'Noise Profile'?

 

 

 



When a user puts his/her connectıon from modem settıngs on a "Noise Profile" usually their DSL line is changed from FastPath to Interleaved.

Interleaving is an error correction protocol that is implemented for your line at the DSLAM. With Interleaving enabled, the DSLAM can correct errors in the data stream it receives before passing that data to your gateway router. It is usually implemented on noisy or marginal lines and can greatly increase sync stability and effectively eliminate "first hop" packet loss. The largest drawback to Interleaving is that it will increase your ping time, specifically to your first hop gateway router.

If Interleaving is not enabled on your line, it is configured as FastPath. FastPath allows the DSLAM to pass the data received from you to the first hop router without performing any error correction. As a result, marginal lines could experience an increase in packet loss and decrease in sync stability (i.e. frequent sync loss). However, FastPath has lower ping times, especially to the first hop router.

One indication if you are on fastpath or interleaved are the FEC errors (no FEC errors should occur on fastpath line). The modem needs reboot after the switch to fastpath.
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