From owner-freebsd-questions@FreeBSD.ORG Mon Oct 20 20:56:49 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5C54716A4B3 for ; Mon, 20 Oct 2003 20:56:49 -0700 (PDT) Received: from sccrmhc12.comcast.net (sccrmhc12.comcast.net [204.127.202.56]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5D9C743FE0 for ; Mon, 20 Oct 2003 20:56:44 -0700 (PDT) (envelope-from jshamlet@comcast.net) Received: from [192.168.1.1] (pcp04637401pcs.gambrl01.md.comcast.net[68.49.84.210]) by comcast.net (sccrmhc12) with SMTP id <2003102103564301200hrfsee>; Tue, 21 Oct 2003 03:56:43 +0000 From: "J. Seth Henry" To: freebsd-questions@freebsd.org Content-Type: text/plain Organization: Message-Id: <1066708602.2366.12.camel@alexandria> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 Date: 20 Oct 2003 23:56:43 -0400 Content-Transfer-Encoding: 7bit Subject: 4.8-REL firewall/gateway not playing nicely with Comcast COM21 modem X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Oct 2003 03:56:49 -0000 Hey gang, I have been trying to build an Internet gateway using a 933MHz EPIA mainboard, and a couple of 3Com 3C905C-TX NIC cards. The gateway works great, under low load - but has a problem with dropping connectivity under load. At first, I thought it might be the VIA LAN port, a vr device. However, I put two 3Com cards in the box, and it still has problems. Both boards are known good - they run just fine, at full loads, in other systems. I have noticed it has a real issue when I window applications through ssh, or use the cisco ATA (for Vonage VOIP). Sometimes it will work just fine for hours, then just die. The router host itself is fine - it just stops routing. I can login at the console, run ifconfig, etc. It just won't send or receive packets. Sometimes this causes the cable modem to hang, but other times the cable modem appears fine. I can't tell, of course, but it is happily blinking away as normal. I typically reboot both the router and the modem when this occurs, so I don't know for sure if it was still "alive". Oddly enough, sometimes this issue "self-corrects". Today, I lost connectivity for an hour, then it came back up on its own. Given the odd nature of the problem, I'm not sure what info I should include - but I'll take a stab at it. -dmesg: Copyright (c) 1992-2003 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 4.8-RELEASE #0: Mon Oct 20 19:32:12 EDT 2003 root@router.gambrl01.md.comcast.net:/usr/src/sys/compile/router Timecounter "i8254" frequency 1193182 Hz Timecounter "TSC" frequency 933371982 Hz CPU: VIA C3 Samuel 2 (933.37-MHz 686-class CPU) Origin = "CentaurHauls" Id = 0x67a Stepping = 10 Features=0x803035 real memory = 264175616 (257984K bytes) avail memory = 253591552 (247648K bytes) Preloaded elf kernel "kernel" at 0xc0369000. md0: Malloc disk Using $PIR table, 5 entries at 0xc00fdc80 npx0: on motherboard npx0: INT 16 interface pcib0: on motherboard pci0: on pcib0 pcib1: at device 1.0 on pci0 pci1: on pcib1 pci1: at 0.0 irq 10 isab0: at device 17.0 on pci0 isa0: on isab0 atapci0: port 0xc000-0xc00f at device 17.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 uhci0: port 0xc400-0xc41f irq 9 at device 17.2 on pci0 usb0: on uhci0 usb0: USB revision 1.0 uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered uplcom0: ATEN International Serial adapter, rev 1.10/0.01, addr 2 uhci1: port 0xc800-0xc81f irq 9 at device 17.3 on pci0 usb1: on uhci1 usb1: USB revision 1.0 uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub1: 2 ports with 2 removable, self powered chip1: at device 17.4 on pci0 pcm0: port 0xd400-0xd403,0xd000-0xd003,0xcc00-0xccff irq 3 at device 17.5 on pci0 pcm0: (id=0x56494161) pci0: (vendor=0x1106, dev=0x3065) at 18.0 irq 10 xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xdc00-0xdc7f mem 0xe4000000-0xe400007f irq 10 at device 19.0 on pci0 xl0: Ethernet address: 00:04:75:95:08:13 miibus0: on xl0 xlphy0: <3c905C 10/100 internal PHY> on miibus0 xlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto xl1: <3Com 3c905C-TX Fast Etherlink XL> port 0xe000-0xe07f mem 0xe4002000-0xe400207f irq 11 at device 20.0 on pci0 xl1: Ethernet address: 00:04:75:95:07:fa miibus1: on xl1 xlphy1: <3c905C 10/100 internal PHY> on miibus1 xlphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto orm0: