... | ... | @@ -225,8 +225,39 @@ There is some consultation between ITU-T and WR on the eEEC, though with |
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low priority, at the moment it seems that eEEC will not be directly
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usable with WR.
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??Authors: Javier Serrano, Maciej Lipinski,
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[CERN](http://cern.ch??)
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??Authors: Javier Serrano, Maciej Lipinski, [CERN](http://cern.ch??)
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### Q: Can I increase the PTP packet rate in the WR Switch?
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A: Yes. By default the Announce-message rate is 1 packet every 2 seconds
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and the Sync-message rate is 1 packet/second. The packet rate is
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calculated in the software using the formula 1/2^log\_value (e.g. if
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log\_value is -4 the packet rate will be 16 pkts/s). To increase the
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Sync-message rate you can modify the log\_value of the Sync-message by
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adding
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sync-interval <log_value>
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in the ppsi.conf file (e.g. sync-interval -4 to increase the
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Sync-message rate to 18 pkts/s). The Announce-message rate is software
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limited from accepting negative log\_values. If you want to increase the
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Announce-message rate you will have to comment out or modify lines 193
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to 197 in wr-switch-sw/userspace/ppsi/lib/conf.c, recompile the PTP
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using
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wrs_build-all --step=8
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and update the firmware on your WR Switch. After these steps you can add
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announce-interval <log_value>
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in the ppsi.conf file (e.g. announce-interval -3 to increase the
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Announce-message packet rate to 8 pkts/s). The log\_value is software
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limited to a minimum value of -4. Please note that these values are
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global and all your WR Switch ports will have the packet rate modified.
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??Author: Adrian Savencu,
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[OPNT](http://www.opnt.nl??)
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-----
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... | ... | |