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On Tue, 9 Aug 2005, Nigel Hamilton wrote:
Hi,
I'm in the process of setting up LVS TUN on Red Hat
Enterprise. I've
installed the new arp_tables RPMs and am configuring the Real Servers. I've
followed the instructions for restricting ARP advertisements found here
(http://www.ultramonkey.org/3/topologies/hc=ha-lb-eg.html#real_servers).
The next step is to configure the "Loopback" interface. But I'm not
sure this is the correct thing to do for LVS TUN?
I haven't used arp_tables, but lo is not involved with
LVS-Tun. You should do everything (whatever that is) on
the tunnel device
DEVICE=lo:0
IPADDR=192.168.6.240
why is this x.x.6.x
^
NETMASK=255.255.255.255
NETWORK=192.168.0.0
BROADCAST=192.168.0.255
and this x.x.0.x?
^
ONBOOT=yes
NAME=loopback
But now I'm stuck. Lets assume the IP of my real server is
67.45.23.2.
* what address should I use for NETWORK? My real servers are on
different networks? My guess is: 67.45.0.0.
VIPs on local devices (lo, tun) are /32 networks so if the
VIP is x.x.x.52, then the broadcast is x.x.x.52 and the
netmask is 255.255.255.255
* do I need to set the MTU anywhere? is 1480 correct for TUN? where
can I set this?
just for testing you don't need anything special. It's
only when the client sends big packets that you'll need
to handle it. Look in the HOWTO
Joe
--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
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