Date: Sat, 17 Mar 2001 12:30:39 -0600 From: Andrew Hesford <ajh3@chmod.ath.cx> To: Michael Aucoin <maucoin01@mediaone.net> Cc: Doug Young <dougy@gargoyle.apana.org.au>, Rick Hamell <hamellr@heorot.1nova.com>, Ted Mittelstaedt <tedm@toybox.placo.com>, Jeff Soule <jsoule@webcrossing.com>, questions@FreeBSD.ORG Subject: Re: Different Device Names for Identical NICs Message-ID: <20010317123039.B41772@cec.wustl.edu> In-Reply-To: <3AB37340.3B420914@mediaone.net>; from maucoin01@mediaone.net on Sat, Mar 17, 2001 at 09:22:56AM -0500 References: <3AB37340.3B420914@mediaone.net>
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I don't know about two of the same network cards. It seems to me, that for the sanity of the administrator, it would be wise just to buy two cards that use different drivers. For one thing, one may forget what name is for what card, or how the cards are connected to the network (was xl0 my outbound card, or my inbound one?). In addition, as the drivers are revised, the order of recognition might change, so one day xl0 might become xl1, and vice versa. A major advantage of FreeBSD (indeed, any real UNIX) over Linux is that network interfaces are named for their drivers and not eth*. This means I can always distinguish two different cards, and my firewall rules will never have to change because I upgraded my kernel. With Linux, on the other hand, the order of recognition of cards can be flipped. I had this problem migrating from 2.2.x to 2.4.x, where my D-Link DE-528 card (eth0 in 2.2.x) became eth1, and my Linksys became eth0. All my firewall rules and configuration files had to be changed. Now, I just have ed0 and dc0. By using two of the same card, or two cards that use the same driver, you are inviting the same sort of trouble. On Sat, Mar 17, 2001 at 09:22:56AM -0500, Michael Aucoin wrote: > All, > > Thanks very much for all the input. I thought I would give you an > update. I was able to use both (3c509) NICs together after I rebuilt > the kernel with ep1 (thanks, Rick). However, I was initially blocked by > the NICs having the same IO address and IRQ. I reconfigured one of them > (using the 3COM-supplied DOS utility) and all is well now. I have been > brain dead about this whole thing, but I did not at first realize I > would have to reconfigure the NIC. Is this usual? > > Mike > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Andrew Hesford ajh3@chmod.ath.cx To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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