[ I'm not subscribed to linux-net so please keep me in the Cc. If there's a better forum for this please inform me of it. ] Context: I am attempting to get an Adaptec Quartet66 card working with the linux bonding driver. This is a 64-bit/66Mhz PCI card with its own PCI bridge onboard and 4 Adaptec Starfire fast ethernet controllers on it. I'm using a fresh RH7.3 XFS install and the included SGI kernel v2.4.18-4_XFS w/ the starfire and bonding drivers compiled as modules. When I boot the machine all four ethernet interfaces on the card are detected as eth1-eth4 (where eth0 is an Intel NIC built into the motherboard). I am able to configure and use all of the ethernet interfaces discretely without issue. However, when I ifenslave eth1-eth4 to bond0 and ifconfig bond0, I am unable to pass any traffic. bond0 correctly inherits the MAC address of eth1, the first interface enslaved to it, as bonding.txt in the kernel networking docs indicates it should. Once I have ifenslaved all four ethernet interfaces to it, ifconfig shows that eth1-eth4 all have the same MAC address as bond0, the address actually associated with eth1 in hardware. bonding.txt does not indicate whether that behavior should occur so I am unsure whether that is relevant. I cannot DHCP an IP once I've configured the bond interface and if I manually assign a known routable static IP to the interface, I get "Destination host unreachable" errors from ping for IPs of machines on the same subnet and switch backplane. The switch I am using is a Cisco C3548-XL running IOS v12.0(5.4)WC(1). Unfortunately I do not have console access to this switch as it is under the administrative control of my employer's (Vanderbilt University) Network Engineering staff. They were over this morning to verify that the four switch ports I am using are in fact "trunked" on the switch. Questions: Are there any diagnostics I can run under Linux to determine if in fact the bonding driver is successfully negotating a fast etherchannel connection with the switch? Does anyone know any useful IOS hoodoo I can suggest the Network Engineering guys run on their switch to diagnose the issue? Are there any known success and/or horror stories involving this ethernet card and cisco fast etherchannel via the linux bonding driver? Google has been less than fruitful in answering this particular question. If I can't get this working, any suggestions on how to debug it? The Network Engineering staff offered to open a case with Cisco over it, but I do not wish to do that until I have verified that this is a problem with their switch and not with Linux. What I will try in the meantime until other suggestions reach my INBOX: I'm going to install FreeBSD on the machine and configure their fast etherchannel netgraph module and see if it works, at least that way I can narrow my search parameters. I would appreciate any and all advice and suggestions. Thanks, Brandon D. Valentine -- http://www.geekpunk.net bandix@geekpunk.net ++[>++++++<-]>[<++++++>-]<.>++++[>+++++<-]>[<+++++>-]<+.+++++++..++ +.>>+++++[<++++++>-]<++.<<+++++++++++++++.>.+++.------.--------.>+. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
