PRIMECLUSTER Global Link Services Configuration and AdministrationGuide 4.7Redundant Line Control Function

C.5.4 Sample configurations for the virtual bridge

This section provides sample configurations for a virtual bridge based on the network configuration shown below.

Figure C.6 For setting the IP address to the virtual bridge (br0)

Adding the settings for the virtual bridge

1) Create the settings for the virtual interface.

2) If the virtual interface is activated, deactivate it.

# /opt/FJSVhanet/usr/sbin/stphanet -n sha0

3) Create a new virtual interface.

• For RHEL8

  # /bin/touch /etc/sysconfig/network-scripts/ifcfg-br0

• For RHEL9

  Create br0 with the following parameters by using the "nmcli connection add" command.

  connection.id: "br0"
  connection.interface-name: "br0"
  connection.type: "bridge"
  connection.autoconnect: "yes"

4) Define the IP address and other settings for the virtual bridge.

• For RHEL8

  • Contents of /etc/sysconfig/network-scripts/ifcfg-br0

    DEVICE=br0
    TYPE=Bridge
    BOOTPROTO=none
    IPADDR=192.168.10.10
    PREFIX=24
    ONBOOT=yes
    DELAY=0

• For RHEL9

  Set the following parameters to br0 with the "nmcli connection modify" command.

  ipv4.method: "manual"
  ipv4.addresses: "192.168.10.10/24"

5) Edit the setting for the virtual interface.

• For RHEL8

  Delete "IPADDR", "PREFIX", and similar statements related to the IP address.
  In addition, add the statement of "BRIDGE=br0".

  • Contents of /etc/sysconfig/network-scripts/ifcfg-sha0

    DEVICE=sha0
    BOOTPROTO=none
    ONBOOT=yes
    TYPE=Ethernet
    BRIDGE=br0

• For RHEL9

  Set the following parameters to sha0 with the "nmcli connection modify" command.

  connection.slave-type: "bridge"
  connection.master: "br0"
  ipv4.method: "disabled"

6) Activate the virtual interface.

# /opt/FJSVhanet/usr/sbin/strhanet -n sha0

7) Activate the virtual bridge.

• For RHEL8

  # /usr/sbin/ifup br0

• For RHEL9

  # /usr/bin/nmcli connection up br0

Deleting the settings for the virtual bridge

1) Deactivate the virtual bridge.

• For RHEL8

  # /usr/sbin/ifdown br0

• For RHEL9

  # /usr/bin/nmcli connection down br0

2) Deactivate the virtual interface and dismantle the virtual bridge.

# /opt/FJSVhanet/usr/sbin/stphanet -n sha0

Note

The following message may be output. This does not disrupt ongoing operation.

hanet: 78011: warning: nmcli failed. (connection down=2560 ifname=virtual interface name)

3) Delete the virtual bridge.

• For RHEL8

  # /bin/rm /etc/sysconfig/network-scripts/ifcfg-br0

• For RHEL9

  # nmcli connection delete br0

4) Edit the setting for the virtual interface.

• For RHEL8

  Delete the statement of "BRIDGE=br0".
  In addition, add statements of "IPADDR", "PREFIX", and similar statements related to the IP address as necessary.

  • Contents of /etc/sysconfig/network-scripts/ifcfg-sha0

    DEVICE=sha0
    IPADDR=192.168.10.10
    PREFIX=24
    BOOTPROTO=none
    ONBOOT=yes
    TYPE=Ethernet

• For RHEL9

  Set the following parameters to sha0 with the "nmcli connection modify" command.

  connection.slave-type: ""
  connection.master: ""
  ipv4.method: "manual"
  ipv4.addresses: "192.168.10.10/24"

5) Activate the virtual interface.

# /opt/FJSVhanet/usr/sbin/strhanet -n sha0