So, TRIO cards have ability to set a overhead offset for their shapers. By default the offset is +24 bytes to account for preamble, frame start and FCS.
This is a good thing, as the shapers now match actual L1 rates. You can change this if needed if what you actually need to do is set target rate for a service operation at a different layer. For example, if using the shapers for rate control of MEF compliant services over a STAGged last mile you might set it to -24, offsetting preample, frame start and the STAG, only counting the full L2 fram including FCS. Important note... The setting is per PIC, but changing the setting for any PIC on a TRIO resets the whole FPC. More important note... While you can make the change to any or all of the PICs on a FPC, if you make the change on _all FPCs_ in the box at the same time the system will never come back without resetting the FPCs manually a second time. Found this out the hard way, and retested on a second system, same results. Doing the change one FPC at a time (waiting for the FPC to come back and start forwarding before doing the next) seems to work fine, on my third system using that method and have not had to fall back to out of band modem. -- ------------------------------------------------------------------------ Christopher E. Brown <chris.br...@acsalaska.net> desk (907) 550-8393 cell (907) 632-8492 IP Engineer - ACS ------------------------------------------------------------------------ _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp