Date: Tue, 18 Feb 2003 13:44:47 -0600 From: Terry Todd <tlt@badger.tltodd.com> To: questions@FreeBSD.ORG Subject: Re: NIC numbering Message-ID: <20030218134447.A50161@badger.tltodd.com> In-Reply-To: <200302181752.h1IHqMGt067351@mail.flugsvamp.com>; from jlemon@flugsvamp.com on Tue, Feb 18, 2003 at 11:52:22AM -0600 References: <local.mail.freebsd-questions/20030215082835.A34779@badger.tltodd.com> <local.mail.freebsd-questions/20030217123009.GA8983@postecom.it> <local.mail.freebsd-questions/20030217130819.GA1275@raggedclown.net> <local.mail.freebsd-questions/20030218110230.A42817@badger.tltodd.com> <local.mail.freebsd-questions/20030218173548.GB20940@happy-idiot-talk.infracaninophi> <200302181752.h1IHqMGt067351@mail.flugsvamp.com>
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On Tue, Feb 18, 2003 at 11:52:22AM -0600, Jonathan Lemon wrote: > In article <local.mail.freebsd-questions/20030218173548.GB20940@happy-idiot-talk.infracaninophi> you write: > >On Tue, Feb 18, 2003 at 11:02:30AM -0600, Terry Todd wrote: > >> On Mon, Feb 17, 2003 at 02:08:19PM +0100, Cliff Sarginson wrote: > >> > On Mon, Feb 17, 2003 at 01:30:09PM +0100, Andrea Franceschini wrote: > >> > > On Sat, Feb 15, 2003 at 08:28:35AM -0600, Terry Todd wrote: > >> > > > When you have more than one of the same type of NIC card in one > >> > > > machine is there a way to insure that the NIC numbering remains > >> > > > attached to the same card / MAC address if more cards are added or > >> > > > they are moved around? > >> > > > > >> > >> Here's an example. > >> > >> The original setup: > >> > >> $ ifconfig -a > >> rl0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 > >> ether 00:e0:29:85:49:b6 > >> media: Ethernet autoselect (10baseT/UTP) > >> status: no carrier > >> rl1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 > >> ether 00:e0:29:85:49:d0 > >> media: Ethernet autoselect (10baseT/UTP) > >> status: no carrier > >> > >> After the cards are switched around in the PCI slots: > >> > >> $ ifconfig -a > >> rl0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 > >> ether 00:e0:29:85:49:d0 > >> media: Ethernet autoselect (10baseT/UTP) > >> status: no carrier > >> rl1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 > >> ether 00:e0:29:85:49:b6 > >> media: Ethernet autoselect (10baseT/UTP) > >> status: no carrier > >> > >> How can I keep rl0 associated with MAC 00:e0:29:85:49:b6 > >> and rl1 associated with MAC 00:e0:29:85:49:d0 and still > >> be able to add cards or move them around? > > > >About the best you can do is use ifconfig(8) to set the MAC address at > >the same time as you configure the interface: > > > > ifconfig rl0 ether 00:e0:29:85:49:b6 > > ifconfig rl1 ether 00:e0:29:85:49:d0 > > > >which will cause the MAC address to stick with the interface number, > >rather than the actual card. That will work if you just keep the two > >cards as you've shown here, but if you add a new card that happens to > >end up as rl0 then you'll probably end up with a mess. > > > >As far as I know, there's no way of wiring down interface numbers to > >PCI bus slots, analogously to the way you can wire down SCSI devices > >by bus, target and LUN --- see the section on 'SCSI DEVICE > >CONFIGURATION' in LINT. You'ld probably have to go a bit linux-ish > >and have, say, eth0 as the generic name for an ethernet interface > >independant of the actual chipset on the NIC in order to make the most > >sense of that sort of wiring-down idea. > > Actually, this capability has been in 5.0 for a long time, but I don't > think that it was ever MFC'd to 4.x. There are network aliases for the > actual physical devices, which appear as /dev/netN, where N is the > index number used. These can be wired either by name or ether number > at boot time: > > Allow wiring of net aliases in /boot/device.hints of the form: > hint.net.1.dev="lo0" > or > hint.net.12.ether="00:a0:c9:c9:9d:63" > > > So for the original poster, you could do (in 5.0): > > hint.net.1.ether="00:e0:29:85:49:b6" > hint.net.2.ether="00:e0:29:85:49:d0" > > > ifconfig net1 > rl1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 > ether 00:e0:29:85:49:b6 > media: Ethernet autoselect (10baseT/UTP) > status: no carrier > > > ifconfig net2 > rl0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 > ether 00:e0:29:85:49:d0 > media: Ethernet autoselect (10baseT/UTP) > status: no carrier > > And the 'net1','net2' aliases will remain bound to whichever driver has > those actual ethernet addresses, regardless of PCI ordering. > -- > Jonathan > Thanks. That works for after the system is booted up and running. I tried adding ifconfig_net1/2 lines to rc.conf and it didn't work. ifconfig_net1="inet 10.0.0.3 netmask 255.0.0.0" Terry Todd To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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