using multiple interfaces for same Network Card

[John-Mark Gurney]

Yasir hussan wrote this message on Tue, Mar 12, 2013 at 23:32 +0500:
> Yes, i want to use them as vlan interface, Does any one has used *vlandev*,
> after seen this
> http://www.cyberciti.biz/faq/howto-configure-freebsd-vlans-with-ifconfig-command/i
> tried to use it as
> 
> ifconfig vlan11  create 10.10.11.1  255.255.255.0 vlan 11  vlandev arge0
> ifconfig vlan12  create 10.10.12.1  255.255.255.0 vlan 12  vlandev arge0
> ifconfig vlan13  create 10.10.13.1  255.255.255.0 vlan 13  vlandev arge0
> ifconfig vlan14  create 10.10.14.1  255.255.255.0 vlan 14  vlandev arge0
> 
> i was expecting that it will create interfaces which will work under arge0,
> and will able to ping from any pc, Does any one have used it, kindly guide
> me about it

vlans are a way to add different broadcast domains..  You need to have a
vlan capable switch/machine connected and properly configured... If you
plug in the machine to a normal switch, and the other machine isn't vlan
aware not much will happen...

Now if you configure your machine to route (net.inet.ip.forwarding) and
setup the pc w/ the proper routing tables, you'll be able to ping the
machines...

If this doesn't help, please talk w/ a local network engineer to help
you configure your network properly...

I'm succussfully using FreeBSD with both vlans, and aliases (multiple
ips on a single interface aka broadcast domain)...

> On Tue, Mar 12, 2013 at 5:06 PM, Ian FREISLICH <ianf at clue.co.za> wrote:
> 
> > Yasir hussan wrote:
> > > Thanks for notic but all the elebration was for make alias on one
> > > interface but i want to have multiple interface, i can no where that
> > > some one would have tring to creating new interfaces and using them,
> > > or may be i am missing something, just send its solution if have,
> > > solution should be for
> >
> > I still think you're confusing Linux semantics with FreeBSD semantics.
> >
> > On linux you would have:
> > eth0      Link encap:Ethernet  HWaddr 00:1E:C9:53:0B:61
> >           inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0
> >           inet6 addr: fe80::21e:c9ff:fe53:b61/64 Scope:Link
> >           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >           RX packets:211328068 errors:0 dropped:0 overruns:0 frame:0
> >           TX packets:368394006 errors:0 dropped:0 overruns:0 carrier:0
> >           collisions:0 txqueuelen:1000
> >           RX bytes:34065846811 (31.7 GiB)  TX bytes:476377525764 (443.6
> > GiB)
> >           Interrupt:169 Memory:e6000000-e6011100
> >
> > eth0:1    Link encap:Ethernet  HWaddr 00:1E:C9:53:0B:61
> >           inet addr:10.0.1.1  Bcast:10.0.1.255  Mask:255.255.255.0
> >           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >           Interrupt:169 Memory:e6000000-e6011100
> >
> >
> > On FreeBSD you would have:
> >
> > re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> >
> > options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
> >         ether 54:04:a6:96:0c:1e
> >         inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255
> >         inet 10.0.1.1 netmask 0xffffff00 broadcast 10.0.1.255
> >         media: Ethernet autoselect (1000baseT <full-duplex>)
> >         status: active
> >
> > These are both the same thing.  Is there any particular reason that
> > you want multiple interfaces?  I can't see a use for it beyond "it's
> > what I'm used to seeing" unless they're VLAN interfaces.

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."