Date: Sun, 31 Mar 2002 20:29:13 -0500 From: "Peter Brezny" <peter@skyrunner.net> To: "Tom Samplonius" <tom@sdf.com> Cc: <freebsd-isp@freebsd.org> Subject: RE: transmit underflow. Message-ID: <NEBBIGLHNDFEJMMIEGOOGEEAEPAA.peter@skyrunner.net> In-Reply-To: <Pine.BSF.4.05.10203311612540.924-100000@misery.sdf.com>
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Thanks a lot Tom. I didn't know you could implement vland on a single card. I suspect that the amount I am carying on this router could be run through two quality 100megabit cards. When you say multiple vlans on a single interface, do you just mean adding aliases to the cards ifconfig to handle multiple subnets? If that's the case, I'm already doing so. We're a wireless isp, and I've been trying to reduce the number of arp broadcasts that go down a physical wireless segment to keep the radio's happy (hence the large number of physically separate ports. What's the preference for multiport cards out there now? I've got two adaptec quartet64 (ana--62044) 4 port cards on the shelf. Freebsd didn't seem to like them on the motherboard I was trying to use (32 bit i think) even though they say they will work fine at 32 bit. Thanks again Peter Brezny Skyrunner.net -----Original Message----- From: Tom Samplonius [mailto:tom@sdf.com] Sent: Sunday, March 31, 2002 7:23 PM To: Peter Brezny Cc: freebsd-isp@freebsd.org Subject: Re: transmit underflow. On Sun, 31 Mar 2002, Peter Brezny wrote: > Hi everyone, > > I've got two digital 4 port Ethernet cards in a system acting as a router. > I get a lot of these after startup. What does all this mean? > > Mar 31 19:44:59 zeus /kernel: de0: abnormal interrupt: transmit underflow > (raising TX threshold to 128|512) See the archives. The cards are starving for transmit data, so the threshold is increased. You might want to use a motherboard with a better PCI implementation, or multiple PCI buses. Lots of server motherboards have two to three PCI buses. Or, use 64bit PCI motherboard and a single GigE card with VLANs instead. > I've also recently had a problem with 'too many stray IRQ's' Remove or disable the device that is doing that. > Which effectively took one of these interfaces down. These digital cards > run rather hot. Any suggestions on multiport network cards? Better cooling perhaps? 16 ethernet ports is going to generate heat no matter how you do it. > Thanks, > > Peter Brezny > Skyrunner.net > Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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