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环境

• red hat Enterprise Linux 4
• Red Hat EnterPRise Linux 5
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7

问题

• Suppose I want a VLAN ID of 192 for the eth0 on a RHEL 5 or 6 System. What should my ifcfg-eth0 and my ifCFg-eth0.192 look like?
• How do you configure VLAN tagging on a RHEL system?
• Is IT possible to configure multiple VLAN IDs on a single interface?

决议

RHEL 7 with NetworkManager

• With nmcli, create a new connection of the VLAN tyPE where con-name is the name of the connection, ifname is the name of the VLAN interface to be created, master is the name of the interface the VLAN will be on top of, and id is the VLAN ID (number).

• Using DHCP for IP addressing with a VLAN ID of 10:

# nmcli connection add type vlan ifname eth0.10 con-name myvlan id 10 dev eth0

• Or, with a static IP using example IP address 192.168.1.10/24 and gateway of 192.168.1.1:

# nmcli connection add type vlan ifname eth0.10 con-name myvlan id 10 dev eth0 ip4 192.168.1.10/24 gw4 192.168.1.1

RHEL 4, RHEL 5, RHEL 6, and RHEL 7 without NetworkManager

• Create an interface configuration file in the /etc/sysconfig/network-scripts/ directory with the name ifcfg-{device}.{vlan} where {device} is the interface the VLAN will be on top of and {vlan} is the VLAN ID (number). {device} can be either a regular interface or a bond. In the example below, the file would be called ifcfg-eth0.10 .
• The ifcfg file must include the DEVICE parameter which specifies the VLAN interface name and VLAN=yes must be set:

    DEVICE=eth0.10
    VLAN=yes
    BOOTPROTO=dhcp
    ONBOOT=yes

RHEL 6 with a custom VLAN interface name

See How to create a VLAN interface with an custom name

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