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5 Configuring virtual interfaces for client access
X9000 Software uses a cluster network interface to carry Fusion Manager traffic and traffic between
file serving nodes. This network is configured as bond0 when the cluster is installed. For clusters
with an agile Fusion Manager configuration, a virtual interface is also created for the cluster network
interface to provide failover support for the console.
Although the cluster network interface can carry traffic between file serving nodes and clients, HP
recommends that you configure one or more user network interfaces for this purpose.
To provide high availability for a user network, you should configure a bonded virtual interface
(VIF) for the network and then set up failover for the VIF. This method prevents interruptions to client
traffic. If necessary, the file serving node hosting the VIF can fail over to its standby backup node,
and clients can continue to access the file system through the backup node.
Network and VIF guidelines
To provide high availability, the user interfaces used for client access should be configured as
bonded virtual interfaces (VIFs). Note the following:
Nodes needing to communicate for file system coverage or for failover must be on the same
network interface. Also, nodes set up as a failover pair must be connected to the same network
interface.
Use a Gigabit Ethernet port (or faster) for user networks.
NFS, CIFS, FTP, and HTTP clients can use the same user VIF. The servers providing the VIF
should be configured in backup pairs, and the NICs on those servers should also be configured
for failover.
For Linux and Windows X9000 clients, the servers hosting the VIF should be configured in
backup pairs. However, X9000 clients do not support backup NICs. Instead, X9000 clients
should connect to the parent bond of the user VIF or to a different VIF.
Creating a bonded VIF
NOTE:
The examples in this chapter use the unified network and create a bonded VIF on bond0.
If your cluster uses a different network layout, create the bonded VIF on a user network bond such
as bond1.
Use the following procedure to create a bonded VIF (bond1:1 in this example):
1.
If high availability (automated failover) is configured on the servers, disable it. Run the following
command on the Fusion Manager:
# ibrix_server
2.
Identify the bond0:1 VIF:
# ibrix_nic
3.
Assign an IP address to the bond1:1 VIFs on each node. In the command, -I specifies the
IP address, -M specifies the netmask, and -B specifies the broadcast address:
# ibrix_nic
# ibrix_nic
# ibrix_nic
# ibrix_nic
Configuring standby backup nodes
The servers in the cluster are configured in backup pairs. If this step was not done when your cluster
was installed, assign standby backup nodes for the bond0:1 interface. For example, node1 is
the backup for node2, and node2 is the backup for node1.
80
Configuring virtual interfaces for client access
m -U
a -n bond0:1
c
n bond0:1
h node1
c
n bond0:1
h node2
c
n bond0:1
h node3
c
n bond0:1
h node4
h node1,node2,node3,node4
I 16.123.200.201
M 255.255.255.0 -B 16.123.200.255
I 16.123.200.202
M 255.255.255.0 -B 16.123.200.255
I 16.123.200.203
M 255.255.255.0 -B 16.123.200.255
I 16.123.200.204
M 255.255.255.0 -B 16.123.200.255
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