what's a "real ip"

[Kim Holburn]

As I understand it a virtual IP is really a second (or any subsequent) IP address for a network interface on a machine, usually a webserver.  All machines have to have one IP number for each network interface to be in an IP network.  They can have more and the rest are known as virtual IPs, although they are just as real as the first, really.  

It used to be the only way to separate web services (virtual servers) on a server but now you can use dns based separation as long as you don't want encryption.

So a non-virtual IP would be the initial IP address for the network interface.

What's the context anyway?

Kim

At 11:04 AM 19/01/2002 +1100, Howard Lowndes wrote:
>Which is...?
>
>On Sat, 19 Jan 2002, Kim Holburn wrote:
>
>> It could mean a non-virtual IP!!
>>
>> At 09:09 AM 19/01/2002 +1100, Howard Lowndes wrote:
>> >At a guess it refers to an IP address that is publically routable and not
>> >one of the IPs refered to in RFC1918, ie. reserved for private routing.
>> >
>> >RFC1918 reserves the following IP ranges as never being allocated on the
>> >public Internet and hence they can be used on private intranets:
>> >
>> >10.0.0.0/8      10.0.0.0 thru 10.255.255.255
>> >172.16.0.0/12   172.16.0.0 thru 172.31.255.255
>> >192.168.0.0/16  192.168.0.0 thru 192.168.255.255
>> >
>> >On Fri, 18 Jan 2002 mn_x at e-apollo.lv wrote:
>> >
>> >> what does a "real ip" mean?



--
Kim Holburn  Network Consultant  P: +61 2 61258620 M: +61 0417820641
Email: kim.holburn at anu.edu.au - PGP Public Key on request

Life is complex - It has real and imaginary parts.
     Andrea Leistra (rec.arts.sf.written.Robert-jordan)