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Appendix B Examples of configuring system environments > B.3 Example of configuring Fast switching mode (IPv4/IPv6) > B.3.3 Configuring virtual interfaces with tagged VLAN
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B.3.3 Configuring virtual interfaces with tagged VLAN

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

The xx, yy and zz in the figure below are assigned automatically by the automatic address configuration.

[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
192.168.30.1    hosta3   # HOST-A Physical IP (Tagged VLAN interface)
192.168.40.1    hosta4   # HOST-A Physical IP (Tagged VLAN interface)
192.168.50.1    hosta5   # HOST-A Physical IP (Tagged VLAN interface)
192.168.60.1    hosta6   # HOST-A Physical IP (Tagged VLAN interface)
192.168.10.2    hostb1   # HOST-B Virtual IP
192.168.30.2    hostb3   # HOST-B Physical IP
192.168.40.2    hostb4   # HOST-B Physical IP
192.168.20.2    hostc2   # HOST-C Virtual IP
192.168.50.2    hostc5   # HOST-C Physical IP
192.168.60.2    hostc6   # HOST-C Physical IP

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

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

2) Reboot

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

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 IPv4 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

5) Creating IPv6 virtual interfaces

/opt/FJSVhanet/usr/sbin/hanetconfig create inet6 -n sha0 -m t -t eth0.3,eth1.4
/opt/FJSVhanet/usr/sbin/hanetconfig create inet6 -n sha1 -m t -t eth0.5,eth1.6

6) Setting up IPv6 routers

Create /etc/radvd.conf file and set the following.

interface sha0
{
        AdvSendAdvert on;          # Sending router advertisements
        MinRtrAdvInterval 3;
        MaxRtrAdvInterval 10;
        prefix fec0:1::0/64        # Sending Prefix fec0:1::0/64 from sha0
        {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr on;
        };
};
interface sha1
{
        AdvSendAdvert on;          # Sending router advertisements
        MinRtrAdvInterval 3;
        MaxRtrAdvInterval 10;
        prefix fec0:2::0/64        # Sending Prefix fec0:2::0/64 from sha1
        {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr on;
        };
};

Note

In the server that runs Fast switching mode, configure two or more router as IPv6 router. If the IPv6 router breaks down, it cannot use site-local address to communicate.
To prevent this, it is recommended to setup at least two IPv6 routers. Depending on the version of radvd, kernel parameter(net.ipv6.conf.all.forwarding=1) must be defined in /etc/sysctl.conf file.
For details on /etc/radvd.conf, refer to the radvd.conf(5), radvd(8) manual.

7) Reboot

Run the following command and 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.

2) Reboot

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

3) Setting a subnet mask

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

4) Creating virtual interfaces

/opt/FJSVhanet/usr/sbin/hanetconfig create -n sha0 -m t -i 192.168.10.2 -t eth0,eth1
/opt/FJSVhanet/usr/sbin/hanetconfig create inet6 -n sha0 -m t -t eth0,eth1

5) Setting up IPv6 routers

Create /etc/radvd.conf file and set the following.

interface sha0
{
        AdvSendAdvert on;          # Sending router advertisements
        MinRtrAdvInterval 3;
        MaxRtrAdvInterval 10;
        prefix fec0:1::0/64        # Sending Prefix fec0:1::0/64 from sha0
        {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr on;
        };
};

6) Reboot

Run the following command and 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.

2) Reboot

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

3) Setting a subnet mask

/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 192.168.20.2 -t eth0,eth1
/opt/FJSVhanet/usr/sbin/hanetconfig create inet6 -n sha0 -m t -t eth0,eth1

5) Setting up IPv6 routers

Create /etc/radvd.conf file and set the following.

interface sha0
{
        AdvSendAdvert on;          # Sending router advertisements
        MinRtrAdvInterval 3;
        MaxRtrAdvInterval 10;
        prefix fec0:2::0/64        # Sending Prefix fec0:2::0/64 from sha0
        {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr on;
        };
};

6) Reboot

Run the following command and reboot the system.

/sbin/shutdown -r now
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