HI,

Good day to all.

MY q:

Redhat 9.0/p-4

I got 2 live/public ips ( 202.50.x.x , 202.51.x.x) with different gateways. Now iam using 202.50.x.x to browse internet ,now i want to assign the 2 ip 202.51.x.x also for same network card. How can ?

finally :

i want to assign 202.50.x.x Gateway:202.50.1.x AND 202.51.x.x
Gateway 202.51.1.x to same NIC , how can i ?

-Thanks for your time.

Just so you know, the system can only have 1 default gateway associated with it so if you're looking to load balance across these two nics, you'll need a different solution, that being said:


To configure the base ethernet address I assume you know the ifconfig utility:

ifconfig eth# <ipaddress> netmask <mask> gw <gateway>
ex.
ifconfig eth0 192.168.1.2 netmask 255.255.255.0 gw 192.168.1.1

to alias additional ips you simply append a : and #, like

ifconfig eth#:# <ipaddress> netmask <mask> gw <gateway>
ex.
ifconfig eth0:0 192.168.2.2 netmask 255.255.255.0 gw 192.168.2.1

You'll notice your routing tables will automatically setup to route 192.168.2.x traffic to the 192.168.2.1 gateway, similar for the first set of ip addresses.

HI,.
THanks for your reply and time. I follwd the link and done eth1:0


http://www.redhat.com/docs/manuals/l...k-aliases.html

My problem is linux is taking ip which added using ip alias as primary ip and trying get net using that . But i want it to use my main ip ( which is first ip of my lan card ) . how can i ?


and as these are real / public ips with 2 different gateways and subnets , is it possible that my system can be view by rest of the world using both of these ips ??

plz help me and thanks for your time

Yes you can be accessed by both public IP addresses. To make your traffic go out your primary IP just make the default gateway whichever associates with that one, like:

if you had two subnets, 192.168.1.x and 192.168.2.x
assume gateways of 192.168.1.254 and 192.168.2.254 respectively

route add default gw 192.168.1.254
vice versa for 2