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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