Multiple NICs

[Bob Bean]

I have an HP N-Class running HP-UX 11 with a total of 9 NICS. Eight of them are currently disabled, and the remaining one is the on-board NIC. Each of the eight NICs has its own IP address and is found in the /etc/hosts file. They also share the host name of the system itself. (These eight IP addresses are also commented out in the hosts file.)

I am attempting to implement a network load-balancing appliance (from F5 Networks), and our plan was to disable the IP of the on-board NIC, and give the network appliance that IP address. We would also enable the eight NICs as well.

Does anyone have any idea's as to what problems I might encounter?

[Shaikh Imran]

Hi,

How are you planning to disable the IP's ?
Just an info:( I assume you know this)

You cannot disable the ip just by uncommenting it in /etc/hosts.

Is this a test server or you have a database on it ?
Are you sure the applications running on the n-class are anyways not using the same IP ?
Are you going to give any other IP
to it ? ( Onboard NIC).
If there is any database running you also have to confirm from the dba that whether any
front-end tools or applications running use the same IP.


Regards,

[Bob Bean]

I plan to disable the on-board NIC card through SAM and comment out the IP address it was bound to in /etc/hosts

At the same time, I would enable the additional eight NIC cards in SAM, and uncomment them in the /etc/hosts

The server in question is our production server, and the IP address used by the on-board NIC is the one used by everyone in our company.

I wasn't planning to assign another IP address to the on-board NIC.

The N-class is running several Oracle databases, and I was working with our DBA to test connectivity to the databases, from both on the server itself, and through the SQLplus client on a PC.

Here is the relevant section of my /etc/hosts file. The 128.1.200.80 address is the on-board NIC.

#128.1.200.97 hpnclass
128.1.200.80 hpnclass hpnclass
#128.1.200.96 hpnclass
#128.1.200.95 hpnclass
#128.1.200.94 hpnclass
#128.1.200.93 hpnclass
#128.1.200.92 hpnclass
#128.1.200.91 hpnclass
#128.1.200.90 hpnclass
127.0.0.1 localhost loopback

[Shaikh Imran]

Hi,

As far as your clients get the connectivity
to the database you can go ahead.
I think you have to use host name aliases also as you are using the same hostnames for all your network cards.

Regards,