The real fix for this problem is to RMA the non-working appliance, however, it is fairly easy to swap over to the currently unused eth1 from eth0,

as a temporary measure, to keep the appliance in production while awaiting RMA.

Short summary :

a) flip the roles of the /etc/sysconfig/network-scripts ifcfg-eth0 file and ifcfg-eth1 file,

b) and adjust the routing table [if needed], to eth1 with the /sbin/route command. 

Detailed steps:

1) establish access to the appliance with a direct keyboard and monitor

2) login as emcsrv

3) become root user with 'sudo su' and emcsrv password

4) become user rsaadmin with 'sudo su rsaadmin'

5) shut down rsa services cleanly with ./rsaam stop all (appliance 3.0), or ./rsaserv stop all (AMX)

6) 'exit' to become root user

7) go to /etc/sysconfig/network-scripts directory

8) make backup copies of ifcfg-eth0 file and ifcfg-eth1

     a) cp ifcfg-eth0 bak-ifcfg-eth0

     b) cp ifcfg-eth1 bak-ifcfg-eth1

NOTE: the backup files cannot begin with 'ifcfg'

If the system boots and sees any files named 'ifcfg...' it will try to load them.

So here we name the backups 'bak-ifcfg' instead of 'ifcfg-bak...' to prevent problems later

9) get the MAC addresses of each interface

     a) cat ifcfg-eth0

     make note of the mac address

     b) cat ifcfg-eth1

     make note of the mac address

10) flip the files and make eth1 the active interface

     a) rm ifcfg-eth0

     b) rm ifcfg-eth1

     c) cp bak-ifcfg-eth0 ifcfg-eth1

     d) cp bak-ifcfg-eth1 ifcfg-eth0

     e) now edit file ifcfg-eth0 and change the first line to say eth0 (it will say eth1)

     f) and also change the mac address in here to be eth0 mac address (should only be the last octet needing change)

     g) now edit file ifcfg-eth1 and change the first line to say eth1 (it will say eth0)

     h) and also change the mac address in here to be eth1 mac address (should only be the last octet needing change)

11) reboot