Thank you for your response. You confirmed what I understood to be how
it works, but for some reason it isn't working like that, and I can't
understand why. The alias gets assigned through heartbeat, during a
failover, but traffic routes through that alias as if there was no
shaping going on at all. In other words it just isn't working the way
that it should be working. I am not even sure where to look for
problems or errors. I don't see how my configuration can be wrong
because it is shaping traffic just fine on the physical adapter . .. If
anyone can think of other suggestions, I would greatly appreciate it.
Thanks!
> -Original Message-
> From: Jose Luis Domingo Lopez [mailto:[EMAIL PROTECTED]
> Sent: Thursday, April 08, 2004 8:12 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [LARTC] First Post: Question on Ip Aliasing
>
> On Thursday, 08 April 2004, at 06:53:27 -0700, Discussion Lists wrote:
>
> > I did a google search on this and didn't find exactly what I was
> > looking for. Suppose I have a machine that has an IP alias
> eth0:0. I
> > have set up HTB.init so that it properly throttles
> bandwidth on eth0,
> > however when I use eth0:0, it doesn't work. I read
> elsewhere that it
> > should work at the PHYSICAL device layer, and should therefore work
> > for both at once. This is not happening though. Just
> wanted to find
> > out if
> >
> I think that the "hack" of "alias interfaces" in Linux has
> been one major source of conceptual problems with respect to
> Linux routing and the like in past years :-). I have always
> believed that it is much better to think of IP addresses in
> Linux as assigned to physical interfaces rather than
> associated to some kind of a virtual one.
>
> The "ip address show" command shows very clearly this fact.
> Each interface has zero or more IP addresses assigned to it,
> and with "ip"
> you will never see "alias interfaces" again, because this
> tool is modern enough to understand the fact. I encourage
> everyone to make the move to "ip" from old "ifconfig" and
> related tools as soon as possible.
>
> In the "ip" world you just have physical (or not so physical,
> like bond?
> or VLAN interfaces) interfaces and IP assigned to them. And
> when you want to refer to IP addresses, you just use them.
> And when you want to refer to interfaces, use the one you need.
>
> Also, have a look at the Stef Coene's excellent KPTD at:
> http://www.docum.org/stef.coene/qos/kptd/
>
> Couple the above diagram with the previous explanation about
> IP and interfaces and maybe all will now be simpler to you.
>
> Greetings.
>
> --
> Jose Luis Domingo Lopez
> Linux Registered User #189436 Debian Linux Sid (Linux 2.6.5)
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