D.6.1 Setup example for creating a highly reliable network of guest domains on KVM hosts (Untagged VLAN)

This section describes a configuration setup example for the following network configuration.

1) Setting up the system

1-1) Define the IP addresses and host names you use in the /etc/hosts file.

192.168.80.1    hosta    # virtual IP address of the KVM host
192.168.80.100  swhub1   # IP address of the primary monitoring destination's HUB
192.168.80.101  swhub2   # IP address of the secondary monitoring destination's HUB

1-2) Edit the /etc/sysconfig/network-scripts/ifcfg-ethX files (X is 0,1) as follows:

Contents of /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0
BOOTPROTO=static
HWADDR=XX:XX:XX:XX:XX:XX
HOTPLUG=no
ONBOOT=yes
DEVICETYPE=hanet

Contents of /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1
BOOTPROTO=static
HWADDR=XX:XX:XX:XX:XX:XX
HOTPLUG=no
ONBOOT=yes
DEVICETYPE=hanet

1-3) Configure the /etc/sysconfig/network file to enable the network setting.

NETWORKING=yes

2) Creating a virtual interface

/opt/FJSVhanet/usr/sbin/hanetconfig create -n sha0 -m v -t eth0,eth1

3) Setting the virtual bridge

Create /etc/sysconfig/network-scripts/ifcfg-br0 as a new interface setup file for the virtual bridge.

Contents of /etc/sysconfig/network-scripts/ifcfg-br0

DEVICE=br0
TYPE=Bridge
BOOTPROTO=static
IPADDR=192.168.80.1
NETMASK=255.255.255.0
ONBOOT=yes
DELAY=0

4) Setting a virtual interface

Define the virtual bridge name (BRIDGE=br0) of the connection target in the /etc/sysconfig/network-scripts/ifcfg-sha0 file. In addition, delete the statements related to the IP address ("IPADDR" and "NETMASK").

Contents of /etc/sysconfig/network-scripts/ifcfg-sha0

DEVICE=sha0
BOOTPROTO=static
ONBOOT=yes
DEVICETYPE=sha
HOTPLUG=no
BRIDGE=br0

5) Setting the network monitoring function

/opt/FJSVhanet/usr/sbin/hanetpathmon target -n sha0 -p 192.168.80.100,192.168.80.101

6) Activating a virtual interface

/sbin/ifup sha0

7) Activating a virtual bridge

/sbin/ifup br0

8) Setting a guest OS

Edit the /etc/sysconfig/network-scripts/ifcfg-eth0 file to configure the IP address.