I am experiencing problems when enabling the 100baseTX option on some 1200
and 4100 Alpha servers.
All servers are firmware release 5.2, Digital Unix 4.0D and Patch Kit 2
(Jul98)
I am not getting anywhere near the 100Mb/s transfer rate while in either
100BaseTX Full or Half Duplex mode. I have set this option at the firmware
level (ewa0_mode= Fast or FastFD). I seem to be getting bursts of traffic,
about 10k at a time every few seconds. If the card is set to 10Mb/s, then
all is well.
The servers are connected into ports of a 7600 Fast Eth card on a 3Com
Corebuilder 7000 with a 7000HD switch card. (It also has an ATM module card
if that matters). Some switch ports are set to auto-sensing and it does
detect the correct card speed. Other ports are fixed to 100baseTX FD.
There is no network congestion on the switch. I have had mixed results
while transferring files (through FTP) between servers. Some seem to get
the full 100Mb/s rate one way, but not the other way. Some don't get it
either way.
Any help will be appreciated.
Regards,
Zoran Kalenic.
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Received on Fri Dec 18 1998 - 00:09:18 NZDT