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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 an 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 eno1 file using vi editor using the following command.

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      vi ifcfg-em1eno1

      
      

   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 eno2 file using vi editor using the following command.

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      vi ifcfg-em2eno2

      
      

   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 eno3 file using vi editor using the following command.

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      vi ifcfg-em3eno3

      
      

   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:

      info

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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

      
      The table below lists the parameters for MGT, HA, PKT0, and PKT1 bridges:

      Parameter	Description

      Value

      Setting
      TYPE

      Indicates

      Specify the bridge type

      .

      For example, the Network Bridge

      .

      BOOTPROTO	The boot time protocol setting	Set to none for this requirement
      DEVICE

      Indicates the

      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	The

      IPADDRIndicates the

      IP address for this bridge

      .

      NETMASK

      Indicates the

      The netmask value associated with the entered IP address

      .

      GATEWAY

      Indicates the

      The gateway address associated with the entered IP address

      .

      STP

      Indicates the

      The Spanning Tree Protocol (STP)

      . This is set

      setting

      Set to off for this requirement

      .BOOTPROTO
      Indicates the boot time protocol. This is set to none for this requirement.

      USERCTL

      Indicates the

      The user control for the device

      . For example,

      Set to no to allow only the super-user root to control this device

      .

      NOZEROCONF

      Indicates

      Enable/disable zeroconf routing	Set to yes to disable zeroconf routing
      ONBOOT	Choose whether or not to activate the bridge at boot-time	Set to yes to activate the bridge at boot-time
      IPV6_DISABLED	Specify whether or not to disable IPv6	Set to yes to disable IPv6
      IPV6INIT	Specify whether to initialize for IPv6 addressing	Set to yes to initialize this interface for IPv6 addressing

      
      

      details. For example, yes to enable the zeroconf route.

      Span

      
      

   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 eno4 file using vi editor using the following command.

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       vi ifcfg-em4eno4

       
       

    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-MGTBRIDGEmgtbridge -rw-r--r--. 1 root root 150 Sep 4 2015 ifcfg-HABRIDGEhabridge -rw-r--r--. 1 root root 151 Apr 26 17:44 ifcfg-PKT0BRIDGEpkt0bridge -rw-r--r--. 1 root root 151 Apr 26 17:44 ifcfg-PKT1BRIDGEpkt1bridge

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