I just tried this by putting a spare network interface on to 100mbps and also forcing the ROACH1 eth0 to 100mpbs - this did not help. Looks like the ethernet device on the ROACH1 is dead.
I used mii-tool to force 100mbps operation: root@roach:~# mii-tool -F 100baseTx-HD eth0 root@roach:~# mii-tool eth0 eth0: 100 Mbit, half duplex, link ok And similar command on a server with spare eth3 (connected to the ROACH in question). Cheers, Ramesh > On 17. Apr 2020, at 15:41, James Smith <jsm...@ska.ac.za> wrote: > > Just to add to what Jason has said, older 100 Mbps switches are easy enough > to pick up secondhand on eBay and such, depending on where you are. They're > quite cheap. > > On Fri, Apr 17, 2020 at 3:19 PM Jason Manley <jman...@ska.ac.za > <mailto:jman...@ska.ac.za>> wrote: > > > Since we are running the ancient Debian Etch on this unit, I have no access > > to ethtool, with which I understand that you can switch to 100mpbs. Is > > there any other way to force 100mbps operation? > > This actually wouldn't work anyway (we tried it). Something is broken in that > Nat.Semi PHY's autonegotiation. Sometimes it works, other times not. And some > boards were more susceptible to failing. > > You really need a 100mbps switch, or a 1Gbps switch that you can down-speed > to lock the port to 100mbps. > > Jason > > > -- > You received this message because you are subscribed to the Google Groups > "casper@lists.berkeley.edu <mailto:casper@lists.berkeley.edu>" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to casper+unsubscr...@lists.berkeley.edu > <mailto:casper%2bunsubscr...@lists.berkeley.edu>. > To view this discussion on the web visit > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/D5D51B6A-2024-4B77-9FC7-7E84CE46DF6F%40ska.ac.za > > <https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/D5D51B6A-2024-4B77-9FC7-7E84CE46DF6F%40ska.ac.za>. > > -- > You received this message because you are subscribed to the Google Groups > "casper@lists.berkeley.edu" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to casper+unsubscr...@lists.berkeley.edu > <mailto:casper+unsubscr...@lists.berkeley.edu>. > To view this discussion on the web visit > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAG67D34keSLJjoTLLjOVHXA0WEcsPbxTyb6p9F10rz%3DPcvcF0w%40mail.gmail.com > > <https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAG67D34keSLJjoTLLjOVHXA0WEcsPbxTyb6p9F10rz%3DPcvcF0w%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "casper@lists.berkeley.edu" group. To unsubscribe from this group and stop receiving emails from it, send an email to casper+unsubscr...@lists.berkeley.edu. To view this discussion on the web visit https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/655FF706-CBDF-4F80-B2EC-BB8B327DB13B%40mpifr-bonn.mpg.de.
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