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

3.4.2 NIC switching mode

The procedure to change the configuration information, and the configuration information and the other information at the same time is as follows:

1. Stop the HUB monitoring function using "hanetpoll off" command. See "7.7 hanetpoll Command" for the detail.
2. Deactivate a virtual interface to change using a "stphanet" command. See "7.3 stphanet Command" for the detail.
3. Change the setup information and common parameter. (For changing monitoring period, the number of monitoring times, recovery monitoring period, cluster switching and link up period, apply changes with "hanetpoll on" command.)
   See "7.7 hanetpoll Command" for the detail.
4. Deactivate temporarily all virtual interfaces set in NIC switching mode using a "stphanet" command, then reactivate them using a "strhanet" command. See "7.2 strhanet Command" and "7.3 stphanet Command" for the detail.
5. Starts a function to monitor HUB using a "hanetpoll on" command.
   (For changing monitoring period, the number of monitoring times, recovery monitoring period, cluster switching and link up period, apply changes with "hanetpoll on" command)
   See "7.7 hanetpoll Command" for the detail.

The procedure for enabling a change made on the monitoring information is as follows:

1. Stop the HUB monitoring function using "hanetpoll off" command. See "7.7 hanetpoll Command" for the detail.
2. Start the HUB monitoring function to monitor the hubs using "hanetpoll on" command.
   (Changes made to the monitoring period, the number of monitoring times, the monitoring recovery period, the waiting time for a cluster failover, and the waiting time for a link up are reflected when "hanetpoll on" command is executed. For more information, refer to "changing configuration and additional information at the same time".)
   See "7.7 hanetpoll Command" for the detail.

The following lists the information that can be changed for NIC switching mode. No information can be changed besides the information listed below. Delete the concerned definition and add it again.

• Configuration definition information
  Use the "hanetconfig" command to change the following information. For information, see Section "7.1 hanetconfig Command".
  • Host name or IP address to be attached to a virtual interface or a logical virtual interface
  • A physical interface name for the virtual interface
  • An IP address or host name of the physical interface
  • Subnet mask to a virtual interface, a logical virtual interface or a physical interface
• Standby patrol information
  Use the "hanetconfig" command to change the following information. For information, see "7.1 hanetconfig Command".
  • Interface names to be bundled by a virtual interface
• Information of monitored remote system and common parameters
  Use the "hanetpoll" command to change the following information. For information, see "7.7 hanetpoll Command".
  • Information on monitored remote system (primary monitored remote system IP address and secondary monitored remote system IP address)
  • HUB-to-HUB monitoring
  • Monitoring interval
  • The number of monitoring times
  • Recovery monitoring period
  • Cluster switching
  • Link up waiting time
• Use the "hanetparam" command to change the following information. For information, see "7.6 hanetparam Command".
  • Standby patrol monitoring interval
  • The number of constant standby monitoring prior to outputting message

• Ensure to specify the same IP address configured in /etc/sysconfig/network-scripts/ifcfg-ethX when specifying physical IP address by "hanetconfig" command using '-i' or '-e' option. If you specify different physical IP address, it disturbs communication using physical interface because this IP address will overwrite the physical IP address specified with "hanetconfig" command when activating the virtual interface.