JRD@cc.usu.edu (Joe Doupnik) (06/28/90)
NetWatch over packet drivers, again - There have been a few comments on this subject recently. I put the changes to PC/IP to run NetWatch over Packet Drivers on my MicroVAX (netlab. cc.usu, 129.123.1.11) recently and added the archive newpcip.tar to the directory too. The latter is reported to not compile. It is really the newer PC/IP which I received across the net awhile ago; my newer code is applied to that base. There may be needed adjustments to the makefiles in the newpcip. tar collection. Long packets - I received several comments on this and they were correct. A few weeks ago I pinned down why the packet limit was around 500 bytes and found the cure (two lines of code). Basically, to receive the packet from the PD a full length buffer is needed (a counted copy from the board to the PC/IP buffer by the packet driver). PC/IP has an array of buffers but limits the total capacity to fit the memory model. I lengthened the buffers to 1300 some odd bytes, to see longer packets, and decreased their number from 10 to 8. Runt packets - this request came in today. Runts are those smaller than 64 bytes and arise typically from comms troubles. I'm checking into this one over the weekend. I'd like to see them too if the Ethernet board will reveal them to the Packet Driver (my PD code had a RUNT-Accept command for the WD8003E board). Micom 5010 boards and promiscuous mode - as commented earlier by someone else, the Micom board does not support true promiscuous mode, alas. I have such a board and tried the works, no go. Building again - Please relay comments back to me on difficulties building NetWatch over Packet Drivers. This is such a neat cheap diagnostic that it's general use needs to be encouraged, if we can keep it stable. If there are a number of good suggestions I'll bundle them and issue fresh working sources directly from my hard disk (vs the new files overlaying old stuff) and bump up the NetWatch version number. Lastly, the VAX above is a VMS machine so when using anonymous ftp use CD [.netwatch] to change to the subdirectory, the brackets and dot are required by VMS. Oh yes, TYPE 6007 will be looked at too. Joe D.