SUMMARY: Virtual Interfaces

    Thanks everybody for your answers... (H. Bertrand, B. Geer, S. 
Sandau, D. Parlee, B Bartels, R. Binz, J. Madden, K. Korb)


    Original Question:
Does anybody know:
1.- If linux kernel 2.2 (and upper) supports virtual network
interfaces (like Solaris)
2.- If so how many support by physical interface?
3.- How to configure it

    Answer:
    1.-  Yes (somebody  indicated 2.4  and upper sure 2.2 not sure)
    2.- Somebody told me 256  (somebody toldme he configured more than 
300, I guess you have to recompile kernel to do it)
    3.- ifconfig eth0:N <ip>  where N is 0-255
          For example:   
                    ifconfig eth0:1 192.168.1.1
                and to remove the address from that interface use:
                    ifconfig eth0:1 down

          You can use the ifconfig options (netmasks...)

          To do it persistently:

    You can make this persistent by creating a new configuration file

    (On Redhat Linux mabay different on other linux versions)

    /etc/sysconfig/network-scripts/ifcfg-eth0:1

    Add the following eneries:

    IPADDR=192.168.1.1
    NETMASK=255.255.255.0




    Additional information:
    - http://www.iptel-now.de/HOWTO/LINUX_IP_ALIAS/linux_ip_alias.html
    - http://www.ibiblio.org/mdw/HOWTO/IP-Alias/index.html


-- 
Rafael Angarita
Telcel Bellsouth
(+58212)(2009765)
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