Before creating a new VM instance, you must 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.
For SR-IOV and Direct I/O setup, network bridge is not required for PKT0 and PKT1.
To navigate to network scripts directory, execute below command:
cd /etc/sysconfig/network-scripts
Perform the following to create a bridge for MGT interface:
Create and Open the ifcfg-mgtbridge
file in vi editor using the following command:
vi ifcfg-mgtbridge
Enter the MGT bridge details. Information like IP Address, Netmask, and Gateway varies based on the configuration.
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
Press Esc key.
To save the file and quit from vi editor, execute below command:
:wq
Create and Open the ifcfg-em1 file using vi editor using the following command.
vi ifcfg-em1
Enter the MGT bridge details as shown below:
BOOTPROTO="dhcp" UUID=fcd2131c-9142-42e4-bce4-825f4c8efc7f DEVICE=em1 ONBOOT=yes BRIDGE="mgtbridge"
Press Esc key.
To save the file and quit from vi editor, execute below command:
:wq
Perform the following to create a bridge for HA interface:
Create and Open the ifcfg-habridge
file using vi editor using the following command.
vi ifcfg-habridge
Enter the HA bridge details as shown below:
TYPE=Bridge BOOTPROTO=none DEVICE=habridge IPADDR=xx.xx.xx.xx NETMASK=xx.xx.xx.xx GATEWAY=xx.xx.xx.xx STP=off USERCTL=no NOZEROCONF=yes ONBOOT=yes
Press Esc.
To save the file and quit from vi editor, execute below command:
:wq
Create and Open the ifcfg-em2 file using vi editor using the following command.
vi ifcfg-em2
Enter the HA bridge details as shown below:
BOOTPROTO="dhcp" UUID=fcd2131c-9142-42e4-bce4-825f4c8efc7f DEVICE=em2 ONBOOT=yes BRIDGE="habridge"
Press Esc key.
To save the file and quit from vi editor, execute below command:
:wq
Perform the following to create a bridge for PKT0 interface:
Create and Open theifcfg-pkt0bridge
file using vi editor using the following command:
vi ifcfg-pkt0bridge
Enter the PKT0 bridge details as shown below:
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
Press Esc.
To save the file and quit from vi editor, execute below command:
:wq
Create and Open the ifcfg-em3 file using vi editor using the following command.
vi ifcfg-em3
Enter the PKT0 bridge details as shown below:
BOOTPROTO="dhcp" UUID=fcd2131c-9142-42e4-bce4-825f4c8efc7f DEVICE=em3 ONBOOT=yes BRIDGE="pkt0bridge"
Press Esc key.
To save the file and quit from vi editor, execute below command:
:wq
Perform the following to create a bridge for PKT1 interface:
Create and Open theifcfg-pkt1bridge
file using vi editor using the following command:
vi ifcfg-pkt1bridge
Enter the PKT1 bridge details as shown below:
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 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. |
Press Esc.
To save the file and quit from vi editor, execute below command:
:wq
Create and Open the ifcfg-em4 file using vi editor using the following command.
vi ifcfg-em4
Enter the PKT1 bridge details as shown below:
BOOTPROTO="dhcp" UUID=fcd2131c-9142-42e4-bce4-825f4c8efc7f DEVICE=em4 ONBOOT=yes BRIDGE="pkt1bridge"
Press Esc key.
To save the file and quit from vi editor, execute below command:
:wq
To list the interface created, execute below command:
ls -ltr ifcfg-*
The command executes with the following output.
-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