6.2 HP IBRIX 9300/9320 Storage Administrator Guide (AW549-96049, December 2012)

When you identify a user network interface for a file serving node, the Fusion Manager queries
the node for its IP address, netmask, and MAC address and imports the values into the configuration
database. You can modify these values later if necessary.
If you identify a VIF, the Fusion Manager does not automatically query the node. If the VIF will be
used only as a standby network interface in an automated failover setup, the Fusion Manager will
query the node the first time a network is failed over to the VIF. Otherwise, you must enter the VIF’s
IP address and netmask manually in the configuration database (see “Setting network interface
options in the configuration database” (page 102)). The Fusion Manager does not require a MAC
address for a VIF.
If you created a user network interface for 9000 client traffic, you will need to prefer the network
for the 9000 clients that will use the network (see “Preferring network interfaces” (page 102)).
Setting network interface options in the configuration database
To make a VIF usable, execute the following command to specify the IP address and netmask for
the VIF. You can also use this command to modify certain ifconfig options for a network.
ibrix_nic -c -n IFNAME -h HOSTNAME [-I IPADDR] [-M NETMASK]
[-B BCASTADDR] [-T MTU]
For example, to set netmask 255.255.0.0 and broadcast address 10.0.0.4 for interface eth3 on
file serving node s4.hp.com:
ibrix_nic -c -n eth3 -h s4.hp.com -M 255.255.0.0 -B 10.0.0.4
Preferring network interfaces
After creating a user network interface for file serving nodes or 9000 clients, you will need to
prefer the interface for those nodes and clients. (It is not necessary to prefer a network interface
for NFS or SMB clients, because they can select the correct user network interface at mount time.)
A network interface preference is executed immediately on file serving nodes. For 9000 clients,
the preference intention is stored on the Fusion Manager. When IBRIX software services start on
a client, the client queries the Fusion Manager for the network interface that has been preferred
for it and then begins to use that interface. If the services are already running on 9000 clients
when you prefer a network interface, you can force clients to query the Fusion Manager by executing
the command ibrix_lwhost --a on the client or by rebooting the client.
Preferring a network interface for a file serving node or Linux 9000 client
The first command prefers a network interface for a File Server Node; the second command prefers
a network interface for a client.
ibrix_server -n -h SRCHOST -A DESTHOST/IFNAME
ibrix_client -n -h SRCHOST -A DESTHOST/IFNAME
Execute this command once for each destination host that the file serving node or 9000 client
should contact using the specified network interface (IFNAME). For example, to prefer network
interface eth3 for traffic from file serving node s1.hp.com to file serving node s2.hp.com:
ibrix_server -n -h s1.hp.com -A s2.hp.com/eth3
Preferring a network interface for a Windows 9000 client
If multiple user network interfaces are configured on the cluster, you will need to select the preferred
interface for this client. On the Windows 9000 client GUI, specify the interface on the Tune Host
tab, as in the following example.
102 Maintaining the system