Configuring private heartbeat links

You now configure the private heartbeat links that LLT uses. VCS provides the option to use LLT over Ethernet or over UDP (User Datagram Protocol). Symantec recommends that you configure heartbeat links that use LLT over Ethernet for high performance, unless hardware requirements force you to use LLT over UDP. If you want to configure LLT over UDP, make sure you meet the prerequisites.

See Using the UDP layer for LLT.

The following procedure helps you configure LLT over Ethernet.

To configure private heartbeat links

  1. Choose one of the following options at the installer prompt based on whether you want to configure LLT over Ethernet or UDP.

    • Option 1: LLT over Ethernet (answer installer questions)

      Enter the heartbeat link details at the installer prompt to configure LLT over Ethernet.

      Skip to step 2.

    • Option 2: LLT over UDP (answer installer questions)

      Make sure that each NIC you want to use as heartbeat link has an IP address configured. Enter the heartbeat link details at the installer prompt to configure LLT over UDP. If you had not already configured IP addresses to the NICs, the installer provides you an option to detect the IP address for a given NIC.

      Skip to step 3.

    • Option 3: Automatically detect configuration for LLT over Ethernet

      Allow the installer to automatically detect the heartbeat link details to configure LLT over Ethernet. The installer tries to detect all connected links between all systems.

      Skip to step 5.

      Note:

      Option 3 is not available when the configuration is a single node configuration.

  2. If you chose option 1, enter the network interface card details for the private heartbeat links.

    The installer discovers and lists the network interface cards.

    Answer the installer prompts. The following example shows different NICs based on architecture:

    • For Solaris SPARC:

      You must not enter the network interface card that is used for the public network (typically bge0.)

      Enter the NIC for the first private heartbeat link on sys1:
      [b,q,?] bge0
      Would you like to configure a second private heartbeat link?
      [y,n,q,b,?] (y)   
      Enter the NIC for the second private heartbeat link on sys1:
      [b,q,?] bge1
      Would you like to configure a third private heartbeat link?
      [y,n,q,b,?](n) 
      Do you want to configure an additional low priority heartbeat 
      link? [y,n,q,b,?] (n)
    • For Solaris x64:

      You must not enter the network interface card that is used for the public network (typically e1000g0.)

      Enter the NIC for the first private heartbeat link on sys1:
      [b,q,?] e1000g1
      Would you like to configure a second private heartbeat link?
      [y,n,q,b,?] (y)   
      Enter the NIC for the second private heartbeat link on sys1:
      [b,q,?] e1000g2
      Would you like to configure a third private heartbeat link?
      [y,n,q,b,?](n)
  3. If you chose option 2, enter the NIC details for the private heartbeat links. This step uses examples such as private_NIC1 or private_NIC2 to refer to the available names of the NICs.
    Enter the NIC for the first private heartbeat 
    link on sys1: [b,q,?] private_NIC1
    Do you want to use address 192.168.0.1 for the 
    first private heartbeat link on sys1: [y,n,q,b,?] (y)
    Enter the UDP port for the first private heartbeat 
    link on sys1: [b,q,?] (50000) ?
    Would you like to configure a second private 
    heartbeat link? [y,n,q,b,?] (y)   
    Enter the NIC for the second private heartbeat 
    link on sys1: [b,q,?] private_NIC2
    Do you want to use address 192.168.1.1 for the 
    second private heartbeat link on sys1: [y,n,q,b,?] (y)
    Enter the UDP port for the second private heartbeat 
    link on sys1: [b,q,?] (50001) ?
    Do you want to configure an additional low priority 
    heartbeat link? [y,n,q,b,?] (n) y
    Enter the NIC for the low priority heartbeat 
    link on sys1: [b,q,?] (private_NIC0)
    Do you want to use address 192.168.3.1 for 
    the low priority heartbeat link on sys1: [y,n,q,b,?] (y)
    Enter the UDP port for the low priority heartbeat 
    link on sys1: [b,q,?] (50004)
  4. Choose whether to use the same NIC details to configure private heartbeat links on other systems.
    Are you using the same NICs for private heartbeat links on all 
    systems? [y,n,q,b,?] (y)

    If you want to use the NIC details that you entered for sys1, make sure the same NICs are available on each system. Then, enter y at the prompt.

    For LLT over UDP, if you want to use the same NICs on other systems, you still must enter unique IP addresses on each NIC for other systems.

    If the NIC device names are different on some of the systems, enter n. Provide the NIC details for each system as the program prompts.

  5. If you chose option 3, the installer detects NICs on each system and network links, and sets link priority.

    If the installer fails to detect heartbeat links or fails to find any high-priority links, then choose option 1 or option 2 to manually configure the heartbeat links.

    See step 2 for option 1, or step 3 for option 2.

  6. Enter a unique cluster ID:
    Enter a unique cluster ID number between 0-65535: [b,q,?] (60842)

    The cluster cannot be configured if the cluster ID 60842 is in use by another cluster. Installer performs a check to determine if the cluster ID is duplicate. The check takes less than a minute to complete.

    Would you like to check if the cluster ID is in use by another 
    cluster? [y,n,q] (y)
  7. Verify and confirm the information that the installer summarizes.