RE: IDLEs on the SONET line

[Tom Alexander <Tom_Alexander@xxxxxxxxxxxxxx>]

Title: IDLEs on the SONET line

Vinitha,

 

Assuming back-to-back packets, the average IPG that will be present

in the packet stream mapped to the SONET payload after deletion of

idles will be 9.6 nsec. In the WAN-PHY application, the MAC will

expand the IPG to lower the sustained data rate to < 9.58464 Gb/s while

keeping the instantaneous data rate at 10.000 Gb/s. Effectively, this

means that the minimum IPG will be increased to > 10.016026 nsec.

When the PCS/WIS combination causes the extra idles to be

deleted, this IPG will come back to 9.6 nsec.

 

Regards,

 

- Tom Alexander

 

-----Original Message-----
From: Vinitha Suresh [mailto:vinee@xxxxxxxxxxxxxxx]
Sent: Thursday, September 28, 2000 2:19 AM
To: HSSG
Subject: IDLEs on the SONET line

 

 

Hi ALL,

This is regarding the number of IDLEs to be put on the
SONET line after stripping some for rate control.

What is the minimum IPG that must be there after deletion of idles?

Regards

Vinitha S
CoreEl Labs Pvt. Ltd