Users,
Iam working in a LAN with a number of systems.
A system has X hardware address and another has Y
hardware address.
I want to set the hardware address of the second
system
also to X.
ifconfig eth0 hw ether 00:56:BA:A4:81:02
ifconfig eth0 172.31.19.30 [[ may want to set netmask/BC]]I also want to set the primary IP addresses of both systems to 172.31.19.30. So when I ping to 172.31.19.30, both the systems should respond.
The topology of LAN we are using is star. All systems are connected to a Switch. Does the settings change when we are using a bus topology?
Some switches may get confused by having the same MAC address on two ports... In somes cases, it may only send a packet to one fo the machines (usually the last one to use that MAC address))
Do I have to write a start up script?
How should I write?
Write a regular shell script and then put it in the proper place. If you have proper rc2.d script directories, then you can put it near the SNNnetwork scripts
For RedHat, that would be /etc/rc.d/rc[2345].d/S10network so you could try S09 Otherwise, put it in the r.local file for those kinds of systems.
Setting the MAC addr needs to be done *BEFORE* you bring the card up. (or you need to bring it down). (under Linux)
For RedHat systems, however, you can use the MACADDR= variable in /etc/sysconfig/network-scripts/ifcfg-eth0 and IPADDR=
The RH scripts do the rest.
For the person who said that some cards don't support this, I would say that that is very rare to nonexistent.. the MAC address needs to be softwar settable for things like prosxy arp and bridgng... In 17 years of playing with ethernet, Idon't rememember *ever* seeing a card that you couldn't set the MAC address on.
My actual goal is to start 2 web servers on two
systems with same hardware address and same primary IP address but with different secondary
IP addresses. So when a request comes from a client, the request has to be seen by both systems. I will write some mechanism by which only
one will respond finally.
--
Stephen Samuel +1(604)876-0426 [EMAIL PROTECTED]
http://www.bcgreen.com/~samuel/
Powerful committed communication. Transformation touching
the jewel within each person and bringing it to light.
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs
