Study and practice of Ip-tun (IP tunneling) technology in LVS

1. Configure the test environment to modify IP

Windows 200.168.10.4

LVS server ip:200.168.10.1 Because IP tunnel mode requires only one network card, it stops other network cards

　　

The web Server1 ip:200.168.10.2 IP tunnel mode is actually used in the public IP, so the gateway is not required to remove the default gateway

　　

Web Server2 ip:200.168.10.3 and web Server1

　　

　　

Because it's the same network segment, so VM simulations are made with Vmnet1

　　

2. Test Pass

Access 200.168.10.1 in Windows | 200.168.10.2 | 200.168.10.3 Full-Pass

　　

　　

　　

3.lvs Server Configuration Virtual IP

Ifconfig tunl0 200.168.10.10 netmask 255.255.255.255 up//virtual one tunnel IP 4 255 stands for it itself a network segment

Ifconfig view

　　

Route add-host 200.168.10.10 Dev tunl0//Add a network segment to the routing table to prevent the 200.168.10.0 network segment from going

Route-n View

　　

4. Setting up the LVS server

Ipvsadm-c

Ipvsadm-a-T 200.168.10.10:80-s RR

Ipvsadm-a-T 200.168.10.10:80-r 200.168.10.2-i

　　Ipvsadm-a-T 200.168.10.10:80-r 200.168.10.3-i

Ipvsadm-l-N View

　　

5. Configure webserver

Ifconfig tunl0 200.168.10.10 netmask 255.255.255.255 up

Route add-host 200.168.10.10 Dev tunl0

echo "1" >/proc/sys/net/ipv4/conf/tunl0/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/tunl0/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce

6. Testing

Enter 200.168.10.10 in Windows browser

　　

Again!

　　

Test success!

　　

Turn from Zox's code life

　　

Study and practice of Ip-tun (IP tunneling) technology in LVS