Configuring a NIC (SUSE Linux Enterprise Server 12)

This section uses SUSE Linux Enterprise Server 12 SP3 (x86_64) as an example to describe how to configure a NIC added to or deleted from a BMS.

Note

If the network is disconnected after a NIC is added and the BMS is restarted, run the following command:

/usr/sbin/wicked ifup bond0.vlan

vlan indicates the VLAN used by the NIC.

If the network is still disconnected, add the NIC again.

Add a NIC

1. Obtain information about the NIC to be added.

   Table 1 NIC information

   Parameter	Description	Example Value
   VLAN and MAC address	Specifies the VLAN information and MAC address of the NIC. To obtain them, perform the following operations: In the BMS list, click the name of the target BMS. Click the NICs tab, locate the row that contains the NIC to be added, and click to expand details. Obtain the values of VLAN and MAC Address.	2835 fa:16:3e:01:c3:2e
   Gateway	Specifies the gateway address of the NIC. To obtain them, perform the following operations: On the NIC details page in 2, obtain the subnet information. On the BMS details page, click the link following VPC to switch to the VPC list. Click the name of the VPC to which the BMS belongs to go to the VPC details page. Click the Subnets tab and obtain the gateway address of the subnet in 1.	192.168.1.1

2. Use a key or password to log in to the BMS as user root.

3. Run the following command to copy network configuration file /etc/sysconfig/network/ifcfg-bond0 to generate file /etc/sysconfig/network/ifcfg-bond0.vlan (replace vlan with the VLAN obtained in step 1, such as 2835):

   cp -p /etc/sysconfig/network/ifcfg-bond0 /etc/sysconfig/network/ifcfg-bond0.2835

4. Run the following command to edit /etc/sysconfig/network/ifcfg-bond0.vlan and configure the network configuration file of the newly added NIC, such as ifcfg-bond0.2835:

   vim /etc/sysconfig/network/ifcfg-bond0.2835

   Edit the file as follows:

   STARTMODE=auto
   ETHERDEVICE=bond0
   LLADDR=fa:16:3e:01:c3:2e
   NM_CONTROLLED=no
   BOOTPROTO=dhcp
   DEVICE=bond0.2835
   USERCONTRL=auto
   TYPE=Ethernet
   VLAN_ID=2835
   

   Where,

   • LLADDR: indicates the MAC address of the NIC to be added. For its value, see 1.

   • DEVICE: Set it to bond0.vlan. vlan is the value obtained from 1, such as 2835.

   • VLAN_ID: indicates the VLAN ID, such as 2835.

   After the modification, press Esc and enter :wq to save the change and exit.

5. Run the following command to start the added NIC:

   /usr/sbin/wicked ifup bond0.vlan

   For example, to start bond0.2835, run the command shown in the following figure.

   

6. Run the following command to check the status of the NIC device:

   

7. Ping the gateway from the new network device to check whether the network connectivity is normal.

   Use the gateway address obtained from 1.

   

Deleting NICs

1. Obtain the VLAN and MAC address of the NIC to be deleted.

2. Use a key or password to log in to the BMS as user root.

3. Locate the network device based on the VLAN information and run the /usr/sbin/wicked ifdown bond0.vlan command to delete the device.

   serverc7fc560e-24d6-4ad4-9b1e-567a762532c3:~ # ip link | grep 2835
   12: bond0.2835@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8888 qdisc noqueue state UP mode DEFAULT group default qlen 1000
   serverc7fc560e-24d6-4ad4-9b1e-567a762532c3:~ #
   serverc7fc560e-24d6-4ad4-9b1e-567a762532c3:~ # /usr/sbin/wicked ifdown bond0.2835
   serverc7fc560e-24d6-4ad4-9b1e-567a762532c3:~ #
   

4. Run the following command to delete network configuration file /etc/sysconfig/network/ifcfg-bond0.vlan (replace vlan with the VLAN obtained from 1, such as 2835):

   rm /etc/sysconfig/network/ifcfg-bond0.2835

5. Run the following command to delete network configuration file /etc/wicked/ifconfig/bond0.vlan.xml (replace vlan with the VLAN obtained from 1, such as 2835):

   rm /etc/wicked/ifconfig/bond0.2835.xml

last updated: 2024-12-10 11:18 UTC - commit: cf05cf92cd8e8941e14b67ba9cbdd0d2223ce9a4