B.1.3 Configuring virtual interfaces with tagged VLAN

This section describes an example configuration procedure of the network shown in the diagram below.

[HOST-A]

1) Setting up the system

1-1) Define IP addresses and hostnames in the /etc/hosts file.

192.168.10.1    hosta1   # HOST-A Virtual IP
192.168.20.1    hosta2   # HOST-A Virtual IP
192.168.30.10   hosta3   # HOST-A Physical IP (Tagged VLAN interface)
192.168.40.10   hosta4   # HOST-A Physical IP (Tagged VLAN interface)
192.168.50.10   hosta5   # HOST-A Physical IP (Tagged VLAN interface)
192.168.60.10   hosta6   # HOST-A Physical IP (Tagged VLAN interface)
192.168.10.2    hostb1   # HOST-B Virtual IP
192.168.30.20   hostb3   # HOST-B Physical IP
192.168.40.20   hostb4   # HOST-B Physical IP
192.168.20.2    hostc2   # HOST-C Virtual IP
192.168.50.20   hostc5   # HOST-C Physical IP
192.168.60.20   hostc6   # HOST-C Physical IP

1-2) Configure the /etc/sysconfig/network-scripts/ifcfg-ethX (X is 0,1) file as follows.

For RHEL7

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

DEVICE=eth0
BOOTPROTO=static
HOTPLUG=no
ONBOOT=yes
TYPE=Ethernet

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

DEVICE=eth1
BOOTPROTO=static
HOTPLUG=no
ONBOOT=yes
TYPE=Ethernet

For RHEL8 or later
- Contents of /etc/sysconfig/network-scripts/ifcfg-eth0
  DEVICE=eth0 BOOTPROTO=none ONBOOT=yes TYPE=Ethernet
- Contents of /etc/sysconfig/network-scripts/ifcfg-eth1
  DEVICE=eth1 BOOTPROTO=none ONBOOT=yes TYPE=Ethernet

1-3) Configure the /etc/sysconfig/network-scripts/ifcfg-ethX.Y (X is 0,1. Y is 3,4,5,6) file as follows.

For RHEL7

Contents of /etc/sysconfig/network-scripts/ifcfg-eth0.3

DEVICE=eth0.3
BOOTPROTO=static
IPADDR=192.168.30.10
NETMASK=255.255.255.0
ONBOOT=yes
VLAN=yes

Contents of /etc/sysconfig/network-scripts/ifcfg-eth1.4

DEVICE=eth1.4
BOOTPROTO=static
IPADDR=192.168.40.10
NETMASK=255.255.255.0
ONBOOT=yes
VLAN=yes

Contents of /etc/sysconfig/network-scripts/ifcfg-eth0.5

DEVICE=eth0.5
BOOTPROTO=static
IPADDR=192.168.50.10
NETMASK=255.255.255.0
ONBOOT=yes
VLAN=yes

Contents of /etc/sysconfig/network-scripts/ifcfg-eth1.6

DEVICE=eth1.6
BOOTPROTO=static
IPADDR=192.168.60.10
NETMASK=255.255.255.0
ONBOOT=yes
VLAN=yes

For RHEL8 or later

Contents of /etc/sysconfig/network-scripts/ifcfg-eth0.3

DEVICE=eth0.3
BOOTPROTO=none
IPADDR=192.168.30.10
PREFIX=24
ONBOOT=yes
VLAN=yes

Contents of /etc/sysconfig/network-scripts/ifcfg-eth1.4

DEVICE=eth1.4
BOOTPROTO=none
IPADDR=192.168.40.10
PREFIX=24
ONBOOT=yes
VLAN=yes

Contents of /etc/sysconfig/network-scripts/ifcfg-eth0.5

DEVICE=eth0.5
BOOTPROTO=none
IPADDR=192.168.50.10
PREFIX=24
ONBOOT=yes
VLAN=yes

Contents of /etc/sysconfig/network-scripts/ifcfg-eth1.6

DEVICE=eth1.6
BOOTPROTO=none
IPADDR=192.168.60.10
PREFIX=24
ONBOOT=yes
VLAN=yes

2) Reflecting system setting

For RHEL7
Run the following command to reboot the system. After rebooting the system, verify eth0.3, eth0.5, eth1.4 and eth1.6 are active using the ip command.
```
/sbin/shutdown -r now
```

For RHEL8 or later

Run the following commands to reload the connection profiles. After reloading the profiles, verify eth0.3, eth0.5, eth1.4 and eth1.6 are active using the ip command.

/usr/bin/nmcli connection reload
/usr/bin/nmcli connection up filename /etc/sysconfig/network-scripts/ifcfg-eth0
/usr/bin/nmcli connection up filename /etc/sysconfig/network-scripts/ifcfg-eth1

3) Setting subnet masks

/opt/FJSVhanet/usr/sbin/hanetmask create -i 192.168.10.0 -m 255.255.255.0
/opt/FJSVhanet/usr/sbin/hanetmask create -i 192.168.20.0 -m 255.255.255.0

4) Creating virtual interfaces

/opt/FJSVhanet/usr/sbin/hanetconfig create -n sha0 -m t -i 192.168.10.1 -t eth0.3,eth1.4
/opt/FJSVhanet/usr/sbin/hanetconfig create -n sha1 -m t -i 192.168.20.1 -t eth0.5,eth1.6

For RHEL7

5) Activating the virtual interfaces

/opt/FJSVhanet/usr/sbin/strhanet

For RHEL8 or later

5) Reboot

Run the following command to reboot the system.

/sbin/shutdown -r now

[HOST-B]

1) Setting up the system

1-1) Define IP addresses and hostnames in the /etc/hosts file. Defined content is same as HOST-A.

1-2) Configure the /etc/sysconfig/network-scripts/ifcfg-ethX (X is 0,1) file as follows.

For RHEL7

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

DEVICE=eth0
BOOTPROTO=static
HOTPLUG=no
IPADDR=192.168.30.20
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet

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

DEVICE=eth1
BOOTPROTO=static
HOTPLUG=no
IPADDR=192.168.40.20
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet

For RHEL8 or later

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

DEVICE=eth0
BOOTPROTO=none
IPADDR=192.168.30.20
PREFIX=24
ONBOOT=yes
TYPE=Ethernet

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

DEVICE=eth1
BOOTPROTO=none
IPADDR=192.168.40.20
PREFIX=24
ONBOOT=yes
TYPE=Ethernet

2) Reflecting system setting

For RHEL7
Run the following command to reboot the system. After rebooting the system, verify eth0 and eth1 are active using the ip command.
```
/sbin/shutdown -r now
```

For RHEL8 or later

Run the following commands to reload the connection profiles. After reloading the profiles, verify eth0 and eth1 are active using the ip command.

/usr/bin/nmcli connection reload
/usr/bin/nmcli connection up filename /etc/sysconfig/network-scripts/ifcfg-eth0
/usr/bin/nmcli connection up filename /etc/sysconfig/network-scripts/ifcfg-eth1

3) Setting a subnet mask

/opt/FJSVhanet/usr/sbin/hanetmask create -i 192.168.10.0 -m 255.255.255.0

4) Creating a virtual interface

/opt/FJSVhanet/usr/sbin/hanetconfig create -n sha0 -m t -i 192.168.10.2 -t eth0,eth1

For RHEL7

5) Activating the virtual interface

/opt/FJSVhanet/usr/sbin/strhanet

For RHEL8 or later

5) Reboot

Run the following command to reboot the system.

/sbin/shutdown -r now

[HOST-C]

1) Setting up the system

1-1) Define IP addresses and hostnames in the /etc/hosts file. Defined content is same as HOST-A.

1-2) Configure the /etc/sysconfig/network-scripts/ifcfg-ethX (X is 0,1) file as follows.

For RHEL7

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

DEVICE=eth0
BOOTPROTO=static
HOTPLUG=no
IPADDR=192.168.50.20
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet

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

DEVICE=eth1
BOOTPROTO=static
HOTPLUG=no
IPADDR=192.168.60.20
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet

For RHEL8 or later

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

DEVICE=eth0
BOOTPROTO=none
HOTPLUG=no
IPADDR=192.168.50.20
PREFIX=24
ONBOOT=yes
TYPE=Ethernet

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

DEVICE=eth1
BOOTPROTO=none
HOTPLUG=no
IPADDR=192.168.60.20
PREFIX=24
ONBOOT=yes
TYPE=Ethernet

2) Reflecting system setting

For RHEL7
- Run the following command to reboot the system. After rebooting the system, verify eth0 and eth1 are active using the ip command.
```
/sbin/shutdown -r now
```

For RHEL8 or later

Run the following commands to reload the connection profiles. After reloading the profiles, verify eth0 and eth1 are active using the ip command.

/usr/bin/nmcli connection reload
/usr/bin/nmcli connection up filename /etc/sysconfig/network-scripts/ifcfg-eth0
/usr/bin/nmcli connection up filename /etc/sysconfig/network-scripts/ifcfg-eth1

3) Setting a subnet mask

/opt/FJSVhanet/usr/sbin/hanetmask create -i 192.168.20.0 -m 255.255.255.0

4) Creating a virtual interface

/opt/FJSVhanet/usr/sbin/hanetconfig create -n sha0 -m t -i 192.168.20.2 -t eth0,eth1

For RHEL7

5) Activating the virtual interface

/opt/FJSVhanet/usr/sbin/strhanet

For RHEL8 or later

5) Reboot

Run the following command to reboot the system.

/sbin/shutdown -r now