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Dear All,
I am testing DR on kernel 2.2.14.
My setting is
(Client) -----------------------------(Director ) ---------------------------(
Real server 1 )
any DIP: 172.26.20.111 (eth0) RIP :
172.26.20.112 (eth0)
VIP: 172.26.20.110 (eth0:1) VIP :
172.26.20.110 (lo:0)
At the real server 1, I configured the server according to
http://www.linuxvirtualserver.org/arp.html.
echo 1 > /proc/sys/net/ipv4/ip_forward
ifconfig lo:0 172.26.20.110 netmask 255.255.255.255 broadcast 172.26.20.110 up
route add -host 172.26.20.110 dev lo:0
echo 1 > /proc/sys/net/ipv4/conf/all/hidden
echo 1 > /proc/sys/net/ipv4/conf/lo/hidden
The real server 1 does not respond the arp request.
(arp problem is solved by hiding VIP.)
But, I wanted to changed 172.26.20.xxx to 192.168.1.xxx :
(Client) -----------------------------(Director ) ---------------------------(
Real server 1 )
any DIP: 192.168.1.111 (eth0) RIP :
192.168.1.112 (eth0)
VIP: 192.168.1.110 (eth0:1) VIP :
192.168.1.110 (lo:0)
Also, at the real server 1, I configured
echo 1 > /proc/sys/net/ipv4/ip_forward
ifconfig lo:0 192.168.1.110 netmask 255.255.255.255 broadcast 192.168.1.110 up
route add -host 192.168.1.110 dev lo:0
echo 1 > /proc/sys/net/ipv4/conf/all/hidden
echo 1 > /proc/sys/net/ipv4/conf/lo/hidden
At this configuration, The real server 1 "does" respond
the arp request. (arp problem is not solved by hiding VIP.)
As summary, I only change the subnet from 172.26.20.xxx ---> 192.168.1.xxx.
I doubt there are some reason in the fact that IP of loopback device (dev = lo)
is 172.0.0.1.
Don't you have any same situation?
Any comment, Thanks.
Young C. Cho
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Young Cheol Cho, Ph. D.
jyc@xxxxxxxxxxxxxx
http://cisl.snu.ac.kr/~jyc
Automation Systems Reseach Institute,
Seoul National Univ.,
Seoul, 151-742, Korea.
Tel : +82-2-874-8256
Fax: +82-2-974-8256
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