Virtualization of Linux network cards

A physical network card is virtualized into two virtual network cards (using VLAN method slicing) using the steps of the operation:

Pre-planning Preparation:

• ETH1 Network card Normal use

• ETH1 The switch port configuration trunk allow vlan5 and public required Vlanid (if 2)

• Example: If Eth1 made two virtual network cards, one as a storage network card as eth1.5, and the other external network card is eth1.2

1. Load 802.1q Module

[[email protected] net]# modprobe 8021q---load 8021q

[[email protected] net]# lsmod |grep 8021q---Check if 802.1q protocol is supported

8021q 28808 0

Garp 14384 1 8021q

MRP 18542 1 8021q

[[email protected] net]# cat >/etc/sysconfig/modules/8021q.modules << EOF---Boot automatically hangs on 8021q module

#!/bin/sh

if [! ' lsmod | grep 8021q ']; Then

Exec/sbin/modprobe 8021q >/dev/null 2>&1

Fi

Eof

2. Virtual NIC configuration VLAN

Storage network directly go vlan5, public network is vlan2

Vi/etc/sysconfig/network-scripts/ifcfg-eth1

Device=eth1

Onboot=yes

Bootproto=static

3. Configure VLAN virtual network card devices

A. Storing the virtual network card

[email protected] net]#cd/etc/sysconfig/network-scripts/

[email protected] net]#CP ifcfg-eth1 ifcfg-eth1.5

[Email protected] net]# VI ifcfg-eth1.5

device=eth1.5

Type=ethernet

Bootproto=static

Onboot=yes

ipaddr=192.168.10.1---storage network using IP

Prefix=24

Vlan=yes---Ensure that when the network starts, check that the virtual network card has not been started

B. Public network Virtual network card

[[Email protected] NET] #cd/etc/sysconfig/network-scripts/

[[Email protected] NET] #cp ifcfg-eth1 ifcfg-eth1.2

[Email protected] net]# VI ifcfg-eth1.2

device=eth1.2---Public network virtual NIC, eth1.2 represents vlan2 sub-interface, '. ' The number that follows is a couple of VLANs.

Type=ethernet

Bootproto=static

ipaddr=10.10.10.1---public network using IP

Prefix=24

Onboot=yes

Vlan=yes ---Ensure that when the network starts, check that the virtual network card has not been started

4. Restart the Network service restart

A. Check the equipment

[[Email protected] vlan]# IP a---can see a [email protected] and [email protected] network card, indicating a successful configuration

5. Verify that the virtual network card is available

Ping 192.168.10.3 test the other physical servers in the storage network to see if the network can pass

Note: It is best to install vconfig-1.9-16.el7.x86_64.rpm again

This article is from the "Lucky Dog" blog, make sure to keep this source http://703356.blog.51cto.com/693356/1670033

Virtualization of Linux network cards