Help Center/ Bare Metal Server/ User Guide/ Network/ Enhanced High-Speed Network/ Configuring an Enhanced High-Speed NIC (SUSE Linux Enterprise Server 11)
Updated on 2022-02-22 GMT+08:00
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Configuring an Enhanced High-Speed NIC (SUSE Linux Enterprise Server 11)

This section uses SUSE Linux Enterprise Server 11 SP4 as an example to describe how to configure an enhanced high-speed NIC of a BMS.

Add a NIC

  1. Use a key or password to log in to the BMS as user root.
  2. On the BMS CLI, run the following command to check the NIC information:

    ip link

    Information similar to the following is displayed.

    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 8888 qdisc mq master bond0 state UP mode DEFAULT group default qlen 1000
    link/ether fa:16:00:57:90:c9 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 8888 qdisc mq master bond0 state UP mode DEFAULT group default qlen 1000
    link/ether fa:16:00:57:90:c9 brd ff:ff:ff:ff:ff:ff
4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 40:7d:0f:52:e3:a5 brd ff:ff:ff:ff:ff:ff
5: eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 40:7d:0f:52:e3:a6 brd ff:ff:ff:ff:ff:ff
6: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 8888 qdisc noqueue state UP mode DEFAULT group default qlen 1000
    link/ether fa:16:00:57:90:c9 brd ff:ff:ff:ff:ff:ff

    Among the devices, eth0 and eth1 bear the VPC, and eth2 and eth3 bear the user-defined VLAN.

  3. Configure the udev rules:

    Run the following command to create the 80-persistent-net.rules file:

    cp /etc/udev/rules.d/70-persistent-net.rules /etc/udev/rules.d/80-persistent-net.rules

    Write the NIC MAC address and name that are queried in 2 and that are not displayed in 80-persistent-net.rules to the file. In this way, after the BMS is restarted, the NIC name and sequence will not change.

    Ensure that the NIC MAC address and name are lowercase letters.

    vim /etc/udev/rules.d/80-persistent-net.rules

    The modification result is as follows:

    SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="f4:4c:7f:5d:b7:2a", NAME="eth0"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="f4:4c:7f:5d:b7:2b", NAME="eth1"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="40:7d:0f:52:e3:a5", NAME="eth2"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="40:7d:0f:52:e3:a6", NAME="eth3"
  4. Create the configuration files of NICs eth2 and eth3:

    You can copy an existing NIC configuration file and modify it to improve the creation efficiency.

    cd /etc/sysconfig/network

    cp ifcfg-eth0 ifcfg-eth2

    cp ifcfg-eth1 ifcfg-eth3

    Run the following commands to modify the configuration files of NICs eth2 and eth3:

    vi ifcfg-eth2

    Modified configuration file of NIC eth2 is as follows.

    STARTMODE=auto
MTU=8888
NM_CONTROLLED=no
BOOTPROTO=STATIC
DEVICE=eth2
USERCONTRL=no
LLADDR=40:7d:0f:52:e3:a5
TYPE=Ethernet

    In this configuration file, set MTU to 8888, BOOTPROTO to STATIC, and configure DEVICE and LLADDR as required.

    vi ifcfg-eth3

    Modified configuration file of NIC eth3 is as follows:

    STARTMODE=auto
MTU=8888
NM_CONTROLLED=no
BOOTPROTO=STATIC
DEVICE=eth3
USERCONTRL=no
LLADDR=40:7d:0f:52:e3:a6
TYPE=Ethernet

    After the modification, save the change and exit.

  5. Run the following command to bond NICs eth2 and eth3 to a NIC, for example, bond1:

    Run the following commands to create the ifcfg-bond1 file and modify the configuration file:

    cp ifcfg-bond0 ifcfg-bond1

    vi ifcfg-bond1

    Modified configuration file of NIC bond1 is as follows.

    BONDING_MASTER=yes
TYPE=Bond
MTU=8888
STARTMODE=auto
BONDING_MODULE_OPTS="mode=1 miimon=100"
NM_CONTROLLED=no
BOOTPROTO=STATIC
DEVICE=bond1
USERCONTRL=no
LLADDR=40:7d:0f:52:e3:a5
BONDING_SLAVE1=eth2
BONDING_SLAVE0=eth3
IPADDR=10.10.10.104
NETMASK=255.255.255.0
NETWORK=10.10.10.0

    In this configuration file, MTU is set to 8888, BONDING_MODULE_OPTS is set to mode=1 miimon=100, BOOTPROTO is set to STATIC. DEVICE, BONDING_SLAVE1, BONDING_SLAVE0, IPADDR, NETMASK, and NETWORK are configured as required. LLADDR is set to the LLADDR value of the BONDING_SLAVE1 NIC.

    After the modification, save the change and exit.

  6. Run the following command to start the added bond1 NIC:

    ifup bond1

  7. Run the following command to query IP addresses:

    ip addr show

    An example is provided as follows:

    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 8888 qdisc mq master bond0 state UP group default qlen 1000
    link/ether fa:16:00:57:90:c9 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 8888 qdisc mq master bond0 state UP group default qlen 1000
    link/ether fa:16:00:57:90:c9 brd ff:ff:ff:ff:ff:ff
4: eth2: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond1 state UP group default qlen 1000
    link/ether 40:7d:0f:52:e3:a5 brd ff:ff:ff:ff:ff:ff
5: eth3: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond1 state UP group default qlen 1000
    link/ether 40:7d:0f:52:e3:a5 brd ff:ff:ff:ff:ff:ff
6: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 8888 qdisc noqueue state UP group default qlen 1000
    link/ether fa:16:00:57:90:c9 brd ff:ff:ff:ff:ff:ff
    inet 172.16.2.44/24 brd 172.16.2.255 scope global bond0
       valid_lft forever preferred_lft forever
    inet6 fe80::f816:ff:fe57:90c9/64 scope link 
       valid_lft forever preferred_lft forever
7: bond1: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 40:7d:0f:52:e3:a5 brd ff:ff:ff:ff:ff:ff
    inet 10.10.10.104/24 brd 10.10.10.255 scope global bond1
       valid_lft forever preferred_lft forever
    inet6 fe80::427d:fff:fe52:e3a5/64 scope link 
       valid_lft forever preferred_lft forever
  8. Repeat the preceding operations to configure other BMSs.

Delete a NIC

  1. Obtain the IP address of the bonded enhanced high-speed NIC to be deleted.
  2. Use a key or password to log in to the BMS as user root.
  3. Locate the bond network device and run the following command to stop and delete the device:

    ifdown bond1

  4. Run the following commands to delete network configuration files /etc/sysconfig/network-scripts/ifcfg-eth2, /etc/sysconfig/network-scripts/ifcfg-eth3, and /etc/sysconfig/network-scripts/ifcfg-bond1:

    rm -f /etc/sysconfig/network-scripts/ifcfg-eth2

    rm -f /etc/sysconfig/network-scripts/ifcfg-eth3

    rm /etc/sysconfig/network/ifcfg-bond1