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 From:  "Vitaly V. Bocharov" <vitaly at fc dash sh dot com>
 To:  stefan at fuhrmann dot homedns dot org
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] IP-aliasing
 Date:  Tue, 27 Dec 2005 09:58:49 +0200
> Am Montag, 26. Dezember 2005 07:18 schrieb Chris Buechler:
> 
>>On 12/24/05, Stefan Fuhrmann <stefan at fuhrmann dot homedns dot org> wrote:
>>
>>>okay, I raed this before. But it is the same thing:
>>>I can only add only one address to the opt interface.
>>>When I have multiple subnets then I have no way to route them.
>>
>>Yeah, you should never have multiple IP subnets on the same broadcast
>>domain.  Use VLAN's, or multiple interfaces.  Putting two IP subnets
>>on the same broadcast domain is pointless, and bad network design.
> 
> No, its not! Image you have a bigger net assume /17 -net. You want to make 
> some subnets. How you want to do this?
> You have infrastructure devices which are only accessible over private 
> addresses so you have to set IP's.
> Thats not pointless, its necessary for a good design. Why do you mean you can 
> do IP- aliasing on professionell devices like a cisco router?

Sorry, but as far as i know, Cisco does not recommend to use aliases 
like the "ip address ... secondary" and aliases will be deprecated soon. 
Instead of aliases Cisco recommends to use VLANs.

> Its absolutly necessary for good and proffessional designs!


-- 
Vitaly V. Bocharov
BV196-RIPE