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Before creating a new VM instance, create network bridges for management (MGT), high availability (HA), and packet ports (PKT0 and PKT1). These are linked to the physical interfaces on the host. This section explains how to create the network bridges and link to the physical interfaces. 

1. Log on to the host system as root user through SSH and telnet client such as PuTTY.

2. To navigate to network scripts directory, execute the following command:

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   cd /etc/sysconfig/network-scripts

   
   

3. Perform the following steps to create a bridge for MGT interface:

   1. Create and Open the ifcfg-mgtbridge file in vi editor using the following command:

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      vi ifcfg-mgtbridge

      
      

   2. Enter the MGT bridge details. Information like IP Address, Netmask, and Gateway varies based on the configuration.

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      TYPE=Bridge BOOTPROTO=none DEVICE=mgtbridge IPADDR=xx.xx.xx.xx NETMASK=xx.xx.xx.xx GATEWAY=xx.xx.xx.xx STP=off USERCTL=no NOZEROCONF=yes ONBOOT=yes

      
      

   3. Press Esc key.

   4. To save the file and quit from vi editor, execute the following command:

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      :wq

      
      

4. Link a bridge with MGT interface:

   1. Create and Open the ifcfg-em1 file using vi editor using the following command.

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      vi ifcfg-em1

      
      

   2. Enter the MGT bridge details as shown below:

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      BOOTPROTOTYPE="dhcp"Ethernet UUID=fcd2131c-9142-42e4-bce4-825f4c8efc7f DEVICE=em1 ONBOOT=yes BRIDGE="mgtbridge"

      
      

   3. Press Esc key.

   4. To save the file and quit from vi editor, execute the following command:

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      :wq

      
      

5. Perform the following steps to create a bridge for HA interface:

   1. Create and Open the ifcfg-habridge file using vi editor using the following command.

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      vi ifcfg-habridge

      
      

   2. Enter the HA bridge details as shown below:

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      TYPE=Bridge BOOTPROTO=none DEVICE=habridge STP=off USERCTL=no NOZEROCONF=yes ONBOOT=yes IPV6_DISABLED=yes IPV6INIT=no

      
      

   3. Press Esc.

   4. To save the file and quit from vi editor, execute the following command:

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      :wq

      
      

6. Link a bridge with HA interface:

   1. Create and Open the ifcfg-em2 file using vi editor using the following command.

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      vi ifcfg-em2

      
      

   2. Enter the HA bridge details as shown below:

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      BOOTPROTOTYPE="dhcp"Ethernet UUID=fcd2131c-9142-42e4-bce4-825f4c8efc7f DEVICE=em2 ONBOOT=yes BRIDGE="habridge"

      
      

   3. Press Esc key.

   4. To save the file and quit from vi editor, execute the following command:

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      :wq

      
      

7. Perform the following steps to create a bridge for PKT0 interface:

   1. Create and Open theifcfg-pkt0bridge file using vi editor using the following command:

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      vi ifcfg-pkt0bridge

      
      

   2. Enter the PKT0 bridge details as shown below:

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      TYPE=Bridge BOOTPROTO=none DEVICE=pkt0bridge IPADDR=xx.xx.xx.xx NETMASK=xx.xx.xx.xx GATEWAY=xx.xx.xx.xx STP=off USERCTL=no NOZEROCONF=yes ONBOOT=yes

      
      

   3. Press Esc.

   4. To save the file and quit from vi editor, execute the following command:

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      :wq

      
      

8. Link a bridge with PKT0 interface:

   1. Create and Open the ifcfg-em3 file using vi editor using the following command.

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      vi ifcfg-em3

      
      

   2. Enter the PKT0 bridge details as shown below:

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      BOOTPROTOTYPE="dhcp"Ethernet UUID=fcd2131c-9142-42e4-bce4-825f4c8efc7f DEVICE=em3 ONBOOT=yes BRIDGE="pkt0bridge"

      
      

   3. Press Esc key.

   4. To save the file and quit from vi editor, execute the following command:

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      :wq

      
      

9. Perform the following to create a bridge for PKT1 interface:

   1. Create and Open theifcfg-pkt1bridgefile using vi editor using the following command:

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      vi ifcfg-pkt1bridge

      
      

   2. Enter the PKT1 bridge details as shown below:

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      TYPE=Bridge BOOTPROTO=none DEVICE=pkt1bridge IPADDR=xx.xx.xx.xx NETMASK=xx.xx.xx.xx GATEWAY=xx.xx.xx.xx STP=off USERCTL=no NOZEROCONF=yes ONBOOT=yes

      
      

      Info

      The table below lists the parameters for HA, PKT0, and PKT1 bridges: Parameter Value TYPE Indicates the type. For example, the Network Bridge. DEVICE Indicates the name of the bridge that is used to link with the physical interface on the host. ONBOOT Indicates whether or not to activate the bridge at boot-time. For example, if Yes, it activates the bridge at boot-time. IPADDR Indicates the IP address for this bridge. NETMASK Indicates the netmask value associated with the entered IP address. GATEWAY Indicates the gateway address associated with the entered IP address. STP Indicates the Spanning Tree Protocol (STP). This is set to off for this requirement. BOOTPROTO Indicates the boot time protocol. This is set to none for this requirement. USERCTL Indicates the user control for the device. For example, no to allow only the super-user root to control this device. NOZEROCONF Indicates zeroconf routing details. For example, yes to enable the zeroconf route.

      
      

   3. Press Esc.

   4. To save the file and quit from vi editor, execute the following command:

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      :wq

      
      

10. Link a bridge with PKT1 interface:

    1. Create and Open the ifcfg-em4 file using vi editor using the following command.

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       vi ifcfg-em4

       
       

    2. Enter the PKT1 bridge details as shown below:

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       BOOTPROTOTYPE="dhcp"Ethernet UUID=fcd2131c-9142-42e4-bce4-825f4c8efc7f DEVICE=em4 ONBOOT=yes BRIDGE="pkt1bridge"

       
       

    3. Press Esc key.

    4. To save the file and quit from vi editor, execute the following command:

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       :wq

       
       

11. To list the interface created, execute the following command:

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    ls -ltr ifcfg-*

    The command executes with the following output.

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    -rw-r--r--. 1 root root 337 Sep 4 2015 ifcfg-eno1 -rw-r--r--. 1 root root 353 Sep 4 2015 ifcfg-eno2 -rw-r--r--. 1 root root 355 Sep 4 2015 ifcfg-eno3 -rw-r--r--. 1 root root 355 Sep 4 2015 ifcfg-eno4 -rw-r--r--. 1 root root 151 Sep 4 2015 ifcfg-MGTBRIDGE -rw-r--r--. 1 root root 150 Sep 4 2015 ifcfg-HABRIDGE -rw-r--r--. 1 root root 151 Apr 26 17:44 ifcfg-PKT0BRIDGE -rw-r--r--. 1 root root 151 Apr 26 17:44 ifcfg-PKT1BRIDGE

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