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[lvs-users] LVS/Tun with DIP=VIP?

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: [lvs-users] LVS/Tun with DIP=VIP?
From: x.weber@xxxxxxxxxxxxxx
Date: Tue, 02 Feb 2010 16:24:32 +0100
hi all,

i have two virtualbox machines both with nearly identical debian lenny, to test 
LVS.

Machine A (Director) has IP 192.168.1.106 and 
Machine B (Real Server) has IP 192.168.1.105

Further does machine B (real server) have a vsftpd running at port 7772.

And thats how I configured it:


Commands:

Both:

echo 1 > /proc/sys/net/ipv4/ip_forward
modprobe ip_vs_ftp

Director:

(ifconfig eth2 192.168.1.106 netmask 255.255.255.0 broadcast 192.168.1.255 up)

ifconfig eth2 192.168.1.106 netmask 255.255.255.255 broadcast 192.168.1.106 up
ipvsadm -A -t 192.168.1.106:7772 -s rr
ipvsadm -a -t 192.168.1.106:7772 -r 192.168.1.105 -i

Real Server:

echo 1 > /proc/sys/net/ipv4/conf/eth1/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/eth1/arp_announce

modprobe ipip

(ifconfig eth1 192.168.1.105 netmask 255.255.255.0 broadcast 192.168.1.255 up)

route add -net 192.168.1.0 netmask 255.255.255.0 dev eth1
ifconfig tunl0 192.168.1.106 netmask 255.255.255.255 broadcast 192.168.1.106 up
route add -host 192.168.1.106 dev tunl0

Restart vsftpd

Test ftp-connection from host (IP 192.168.1.104)

Ccommands in brackets are not executed because the machines come up, with this 
configuration.

But it does not work!! If I configure it with the free IP 192.162.1.150 as VIP 
instead of the DIP=VIP (192.168.1.106) it works!

Where is the my mistake? 

Thanks for any helpful answers.
 X. Weber
-- 
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sicherer, schneller und einfacher! http://portal.gmx.net/de/go/chbrowser

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