Hi dave and all
 
As i have said to you previously the netdump server i am using is version redhat 5 , and the netdump client version is a AS 3 redhat.
 
Now i have reached a stage where i am having the vmcore file of a crashed AS 3 redhat and i am going to run my crash utility on the netdump server version 5 . I have installed the kernel-debuginfo.2.4.21.40.EL.i686.rpm which is equvivalent to the crashed kernel version AS 3 . 
 
Dave, as you suggested to look for and execute
crash <path-to>/vmlinux-2.4.21-40.ELsmp <path-to>/vmlinux-2.4.21-40.ELsmp.debug <path-to>/vmcore
 
But the fact is i dont have /boot/vmlinux-2.4.21-40.ELsmp , instead i have /boot/vmlinuz-2.6.18-8.el5 , which make sence because its a redhat version 5 machine. 
 
SO do i need to install secondary kernel version that match the crashed version?
 
So what i presume from this is that crash utility can be run on the machine which run the same version as that of the crashed version . 
 
 Is that right or am i wrong , i dont know.
 
Where do i go from here . Waiting eagerly for a reply .
Regards
--
Anirudh Srinivasan