Date: Tue, 27 Feb 2001 00:09:15 +0100 From: "Rogier R. Mulhuijzen" <drwilco@drwilco.nl> To: "Drew J. Weaver" <drew.weaver@thenap.com> Cc: freebsd-net@FreeBSD.ORG Subject: Re: Quick question about IP aliasing Message-ID: <4.3.2.7.0.20010227000742.00d24820@mail.bsdchicks.com> In-Reply-To: <B1A7D9973EBED3119ADD009027DC8649180DBF@mailman.thenap.com>
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[-- Attachment #1 --]
At 10:27 26-2-01 -0500, you wrote:
> Say I have a main server Ip address of (This is completely made
> up) 209.190.53.51, and I have 32 IP addresses blocked to it on
> 209.51.193.32-64 (or whatever, this is an example) would this alias line
> still be valid for that? I've never done a server where the MAIN IP and
> the aliased IPs were on different IP classes.
>
>ifconfig_fxp0_alias0="inet 209.51.193.32 netmask 255.255.255.0" (is an
>example of what im using for the aliases.)
>
>Is there something special I need to do since these aren't on the same net?
No, you can just use the regular netmask for the first IP in a new subnet.
It's only when you have more than one IP in the same subnet that you need
to use 255.255.255.255 (or 0xffffffff, which I prefer) as a subnetmask.
DocWilco
[-- Attachment #2 --]
<html>
At 10:27 26-2-01 -0500, you wrote:<br>
<br>
<blockquote type=cite cite>
<font size=2>Say I have a main server Ip address of (This is completely
made up) 209.190.53.51, and I have 32 IP addresses blocked to it on
209.51.193.32-64 (or whatever, this is an example) would this alias line
still be valid for that? I've never done a server where the MAIN IP and
the aliased IPs were on different IP classes.<br>
</font><br>
<font face="Courier New, Courier" size=2>ifconfig_fxp0_alias0="inet
209.51.193.32 netmask 255.255.255.0" (is an example of what im using
for the aliases.)</font> <br>
<br>
<font face="Courier New, Courier" size=2>Is there something special I
need to do since these aren't on the same net?</font> </blockquote><br>
No, you can just use the regular netmask for the first IP in a new
subnet. It's only when you have more than one IP in the same subnet that
you need to use 255.255.255.255 (or 0xffffffff, which I prefer) as a
subnetmask.<br>
<br>
<x-tab> </x-tab>DocWilco</html>
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