[RndTbl] shaw 2nd ip

[John Lange]

Thanks for the corrections Gilbert. I'm certainly rusty at this point
having not had any need for multiple IPs for quite some time.

John


On Wed, Dec 1, 2021 at 4:06 PM Gilbert E. Detillieux <
gedetil at cs.umanitoba.ca> wrote:

> John,
>
> I think you might be conflating two different types of virtual
> interfaces.  The eth0:n notation is for a virtual interface that works
> at the IP layer, and shares the link layer, including MAC address, of
> the parent interface.  Like this...
>
> https://linuxconfig.org/configuring-virtual-network-interfaces-in-linux
>
> Then there's the eth0.n notation (note the "." rather than the ":") for
> a macvlan interface that works at the link layer, and can have a
> separate MAC address (and VLAN) from the parent interface.  This shows
> an example of each...
>
>
> https://unix.stackexchange.com/questions/21841/make-some-virtual-mac-address
>
> And this gives all the gory details of various types of virtual
> interfaces for various VM hosting scenarios...
>
>
> https://developers.redhat.com/blog/2018/10/22/introduction-to-linux-interfaces-for-virtual-networking
>
> (I learned some new concepts and lots of new terminology from this last
> one.)
>
> In any case, Linux does indeed provide a way (or more) to support
> multiple MAC addresses on one physical Ethernet interface, so setting
> this up for multiple dynamic IP addresses from Shaw should be doable.
>
> Gilbert
>
> On 2021-12-01 9:22 a.m., John Lange wrote:
> > Not sure I understood the question but yes you can have as many IPs as
> > you want on the same nic.
> >
> > It's been a while since I have done it but you just add virtual nics and
> > they look like this:
> >
> > Eth0:0
> > Eth0:1
> > Eth0:2
> > Etc.
> >
> > Each one has its own Mac and can operate independently on the network.
> > They can all be static IPs or dhcp.
> >
> > They can even be on different vlans.
> >
> > John
>
> --
> Gilbert E. Detillieux           E-mail: <gedetil at cs.umanitoba.ca>
> Dept. of Computer Science       Web:
> http://www.cs.umanitoba.ca/~gedetil/
> University of Manitoba          Phone:  (204)474-8161
> Winnipeg MB CANADA  R3T 2N2
> For best service, contact <cstech at cs.umanitoba.ca>.
>


-- 
John Lange
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