Performance problem with two tulip's in one machine?
The Molchany's
molchany@home.com
Thu Mar 16 08:38:37 2000
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I'm having a problem with a firewall configuration that uses two=20
Netgear FA310TX's in one machine.=20
100Mbit net <---> FA310TX <---> FA310TX <--> 10Mbit link to Cable modem
The above configuration has, on average, about 1/4 the throughput of the
following configuration. (~250-500Kbps vs ~1-3Mbps, 3Mbps being the max
cable modem rate)
100Mbit net <---> FA310TX <---> NE2K-PCI card <--> 10Mbit link
Other things to note:
1) With two FA310TX's the 10Mbit link is slow even if the 100Mbit link =
is
ifconfig'd down.
2) Driver info
Mar 16 02:20:57 gate kernel: tulip.c:v0.91x 12/15/99 =
becker@cesdis.gsfc.nasa.gov
Mar 16 02:20:57 gate kernel: eth1: Lite-On 82c168 PNIC rev 33 at =
0xc5056000,
Mar 16 02:20:57 gate kernel: eth1: MII transceiver #1 config 1000 =
status =20
3) Redhat 6.0 - Linux Kernel version 2.2.5-22=20
4) I've reproduced this problem with two different motherboards
a) Ancient Intel P133 motherboard=20
b) FIC 503+ Via w/AMD K6-2/400
Any help would be greatly appreciated.
-- Greg Molchany, molchany@home.com
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<DIV><FONT size=3D2>I'm having a problem with a firewall configuration =
that uses=20
two </FONT></DIV>
<DIV><FONT size=3D2>Netgear FA310TX's in one machine. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>100Mbit net <---> FA310TX <---> FA310TX =
<-->=20
10Mbit link to Cable modem</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>The above configuration has, on average, about 1/4 =
the=20
throughput of the</FONT></DIV>
<DIV><FONT size=3D2>following configuration. (~250-500Kbps vs ~1-3Mbps, =
3Mbps=20
being the max</FONT></DIV>
<DIV><FONT size=3D2>cable modem rate)</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>100Mbit net <---> FA310TX <---> NE2K-PCI =
card=20
<--> 10Mbit link</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>Other things to note:</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>1) With two FA310TX's the 10Mbit link is slow even =
if the=20
100Mbit link is</FONT></DIV>
<DIV><FONT size=3D2>ifconfig'd down.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>2) Driver info</FONT></DIV>
<DIV><FONT size=3D2>Mar 16 02:20:57 gate kernel: tulip.c:v0.91x 12/15/99 =
<A=20
href=3D"mailto:becker@cesdis.gsfc.nasa.gov">becker@cesdis.gsfc.nasa.gov</=
A><BR>Mar=20
16 02:20:57 gate kernel: eth1: Lite-On 82c168 PNIC rev 33 at =
0xc5056000,<BR>Mar=20
16 02:20:57 gate kernel: eth1: MII transceiver #1 config 1000 =
status =20
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>3) Redhat 6.0 - Linux Kernel version 2.2.5-22 =
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>4) I've reproduced this problem with two different=20
motherboards</FONT></DIV>
<DIV><FONT size=3D2> a) Ancient Intel P133 motherboard =
</FONT></DIV>
<DIV><FONT size=3D2> b) FIC 503+ Via w/AMD =
K6-2/400</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>Any help would be greatly appreciated.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3D2>-- Greg Molchany, <A=20
href=3D"mailto:molchany@home.com">molchany@home.com</A></FONT></DIV>
<DIV> </DIV>
<DIV> </DIV></BODY></HTML>
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