mac mini usb ethernet adapters
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From: somnambulist on 19 May 2010 01:05 I'm trying to set up a mac mini 2,1 running 10.6.3 server with 3 wired network interfaces. I have the built-in running a fixed address on network 1, and one Apple USB adapter running a fixed address on network 2, but when I try to add a second Apple USB adapter or an Arkview gigabit USB adapter using DHCP on network 3, they can't get an address from any DHCP server I've tried (Airport, Sonicwall, CIsco) Having the USB adapter also seems to make the Airport card fail to get a DHCP address. Does anyone know the maximum number of USB ethernet adapters which one should be able to attach? Or any work-around to add a third wired interface? I'd prefer not to put two of the networks on a single interface for security purposes, though that's an option. The system logs, Google and the Apple support site haven't been much help... TIA -- armackay
From: David Empson on 19 May 2010 02:42 somnambulist <see.signature(a)uswest.net> wrote: > I'm trying to set up a mac mini 2,1 running 10.6.3 server with 3 wired > network interfaces. I have the built-in running a fixed address on > network 1, and one Apple USB adapter running a fixed address on network > 2, but when I try to add a second Apple USB adapter or an Arkview > gigabit USB adapter using DHCP on network 3, they can't get an address > from any DHCP server I've tried (Airport, Sonicwall, CIsco) Having the > USB adapter also seems to make the Airport card fail to get a DHCP > address. This is probably just an issue with the network interface priorities. The Mac won't fully activate a network interface (and get a DHCP lease) unless it thinks it needs to use that interface. The priority is set here: System Preferences > Network > gear symbol > Set Service Order Drag the network interfaces in the desired order. The one that needs to use DHCP should be first on the list, which will also make it the default interface for all Internet traffic not routed via another specified interface. In your case, either the built-in Ethernet or the first USB Ethernet Adapter is probably earlier in the list than your Airport and second USB Ethernet adapter, so the Mac is never bothering to get a DHCP lease on those interfaces (beyond generating a self-assigned address if the interface is active). > Does anyone know the maximum number of USB ethernet adapters which one > should be able to attach? I expect that two should work, but will exceed the usable performance of USB 2.0 for 100 Mbit full duplex, so your network throughput will be constrained. > Or any work-around to add a third wired interface? I'd prefer not to put > two of the networks on a single interface for security purposes, though > that's an option. A router or switch with VLAN support might be an option, if the Mac can be configured to recognise the VLAN tags and treat them as separate networks. (Never played with this stuff.) -- David Empson dempson(a)actrix.gen.nz
From: somnambulist on 19 May 2010 03:33 In article <1jir14u.9lyzsfwn40ltN%dempson(a)actrix.gen.nz>, dempson(a)actrix.gen.nz (David Empson) wrote: > > > This is probably just an issue with the network interface priorities. > The Mac won't fully activate a network interface (and get a DHCP lease) > unless it thinks it needs to use that interface. > > The priority is set here: > > System Preferences > Network > gear symbol > Set Service Order Thanks for the suggestion; unfortunately, it didn't work for me. I wonder if the driver for the USB dongle is specific to one dongle at a time, ie there needs to be ore than one driver; but that seems unlikely since the other brand I tried uses a different chipset, as I recall... I was able to get the wireless interface going with the motherboard network and the USB network as the second and third - works for now... -- armackay
From: David Empson on 19 May 2010 06:05 somnambulist <see.signature(a)uswest.net> wrote: > In article <1jir14u.9lyzsfwn40ltN%dempson(a)actrix.gen.nz>, > dempson(a)actrix.gen.nz (David Empson) wrote: > > > > > > > This is probably just an issue with the network interface priorities. > > The Mac won't fully activate a network interface (and get a DHCP lease) > > unless it thinks it needs to use that interface. > > > > The priority is set here: > > > > System Preferences > Network > gear symbol > Set Service Order > > Thanks for the suggestion; unfortunately, it didn't work for me. I > wonder if the driver for the USB dongle is specific to one dongle at a > time, ie there needs to be ore than one driver; but that seems unlikely > since the other brand I tried uses a different chipset, as I recall... The chipset isn't likely to be an issue - if there is a standard USB class for network interface devices and both the Apple one and other brand support that class, it might have exposed a bug in the Apple USB network driver dealing with multiple interfaces. > I was able to get the wireless interface going with the motherboard > network and the USB network as the second and third - works for now... Good. -- David Empson dempson(a)actrix.gen.nz
From: Bruce in alaska on 20 May 2010 15:39
In article <1jirbj6.qsvaz5f62hdbN%dempson(a)actrix.gen.nz>, dempson(a)actrix.gen.nz (David Empson) wrote: > somnambulist <see.signature(a)uswest.net> wrote: > > > In article <1jir14u.9lyzsfwn40ltN%dempson(a)actrix.gen.nz>, > > dempson(a)actrix.gen.nz (David Empson) wrote: > > > > > > > > > > > This is probably just an issue with the network interface priorities. > > > The Mac won't fully activate a network interface (and get a DHCP lease) > > > unless it thinks it needs to use that interface. > > > > > > The priority is set here: > > > > > > System Preferences > Network > gear symbol > Set Service Order > > > > Thanks for the suggestion; unfortunately, it didn't work for me. I > > wonder if the driver for the USB dongle is specific to one dongle at a > > time, ie there needs to be ore than one driver; but that seems unlikely > > since the other brand I tried uses a different chipset, as I recall... > > The chipset isn't likely to be an issue - if there is a standard USB > class for network interface devices and both the Apple one and other > brand support that class, it might have exposed a bug in the Apple USB > network driver dealing with multiple interfaces. > > > I was able to get the wireless interface going with the motherboard > > network and the USB network as the second and third - works for now... > > Good. I would suggest that the OP make the wired ethernet Interface (EN0) the DCHP Interface and the USB Ethernets, (EN1), and (EN2) the Fixed IP Interfaces, and see if that works... Just saying... -- Bruce in alaska add <path> after <fast> to reply |