PRIMECLUSTER Global Link Services Configuration and Administration Guide: Redundant Line Control Function 4.1 (for Linux)

3.2.2.3 System setup in NIC switching mode

Common settings between IPv4 and IPv6

• To specify "HWADDR=XX:XX:XX:XX:XX:XX" for the GLS physical interface settings (the "/etc/sysconfig/network-scripts/ifcfg-ethX" file), add "HOTPLUG=no" to the settings.
• To create backup of the physical interface settings (the "/etc/sysconfig/network-scripts/ifcfg-ethX" file), the file name must begin with names other than "ifcfg-".
  (e.g. bak_ifcfg-ethX)
  If the file name begins with "ifcfg-", OS might recognize the interface as an interface to be activated during system startup.

When using an IPv4 address

• Define the IPv4 address (virtual IP address, physical IP address, monitored IP addresses to be specified in monitoring destination information) and a host name in /etc/hosts file. These host names must be specified in the /etc/hosts file even if no host names but IP addresses are directly specified in environment definitions.
• Before booting an OS, the primary interface (physical interface) you are going to apply must in active state and make sure IPv4 address is assigned. (In the file /etc/sysconfig/network-scripts/ifcfg-ethX, define "ONBOOT=yes" and in the /etc/sysconfig/network file, define "NETWORKING_IPV6=yes".) Also, make sure the secondary interface (physical interface) is in inactive state. (In the /etc/sysconfig/network-scripts/ifcfg-ethX file, define "ONBOOT=no".)
• For Redundant Line Control Function, the path information must be initialized and the routing daemon must be restarted. If path information is statically specified, the static paths must be described in a configuration file for routing daemon.

When using an IPv6 address

• Define the IPv6 address (takeover virtual IP address, monitored IP addresses to be specified in monitoring destination information) and a host name in /etc/hosts file.
• Before booting an OS, the primary interface (physical interface) you are going to apply must in active state and be sure IPv6 address is assigned. (In the file /etc/sysconfig/network-scripts/ifcfg-ethX, define "ONBOOT=yes" and in the file /etc/sysconfig/network, set "NETWORKING_IPV6=yes") Also, make sure the secondary interface (physical interface) is in inactive state. (In the file /etc/sysconfig/network-scripts/ifcfg-ethX, set "ONBOOT=no".)
• Do not set the server running NIC switching mode as IPv6 router.
• In order to set stateless address auto-configuration against the physical interface(ethX) that uses NIC switching mode, make sure to set IPv6 router on the network connecting the server. Moreover, for IPv6 address prefix and prefix length configured in Redundant Line Control function, specify the same value configured on the IPv6 router. The following is an example of setting a /etc/radvd.conf file when using a Linux server as an IPv6 router. In addition, depending on the version of radvd, kernel parameter(net.ipv6.conf.all.forwarding=1) must be defined on /etc/sysctl.conf file. For details on this, see the manual of radvd.conf(5) and radvd(8).

/etc/radvd.conf

interface eth0
{
        AdvSendAdvert on;        # Sending router advertisements
        MinRtrAdvInterval 3;
        MaxRtrAdvInterval 10;
        prefix fec0:1::0/64      # Sending Prefix fec0:1::0/64 from eth0
        {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr on;
        };
};