Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!jethro!mock From: mock@watt.support.Corp.Sun.COM (Joseph Mocker) Newsgroups: comp.protocols.tcp-ip.ibmpc Subject: Clarkson 3c503 Driver Problem Message-ID: Date: 1 Mar 91 06:08:47 GMT Sender: news@jethro.Corp.Sun.COM Distribution: comp Organization: Sun Microsystems Inc. Lines: 41 I have encountered a rather strange problem with the Clarkson Packet driver for the 3c503 card...here it is... I've been dorking around with the TCP/IP protocols lately. I decided that I wanted to write a little TCP/IP watcher/analyzer. Since I didn't want to muck around with all that low level ethernet junk I picked up a copy of the Clarkson Pkt Drvrs and got to it. During my messing around, I found that there is a problem with the 3c503 packet driver in promiscuous mode. My program basically does the following: 1. find packet driver 2. get stats of interface: driver_info() 3. initialize IP packet watching: access_type() 4. retrieve all packets: set_rcv_mode() 5. loop 6. if packet available: display it 7. end loop What is happening is that after a while of chugging along, I stop receiving packets. If I quit the program and start it up (without rebooting) it will work for a while and stop again. I recently slapped a WD8003e in my machine, and my program chugged along like a charm. I even shoved a NI5010 in there and it hasn't had any problems either. (I used the packet drivers for each of these as well) I seem to have noticed that it hangs after receiving a 1500 byte UDP packet, but it doesn't happen on receiving all 1500 byte UDP packets. That is, it will sometimes receive these packets fine, and other times, just stop up. I think it is just a problem when the 503 is in promiscuous mode, I have used the packet drivers with the pc-nfs compatibility kit w/o any problems... Any Ideas??? -- ------------------------------------------------------------------------------ Joe Mocker//USAC//PC-NFS Support :: mock@Corp.Sun.COM :: Sun Microsystems Inc. :: there's still lofty dreams :: meager desires :: still sillyness ::