on <A HREF="#Clustering">Clustering</A> for more information.
</LI>
+<LI><B>cluster_port</B> (int udp port)<BR>
+UDP cluster port (default: 32792). See the section on
+<A HREF="#Clustering">Clustering</A> for more information.
+</LI>
+
<LI><B>cluster_interface</B> (string)<BR>
Interface for cluster packets (default: eth0).
</LI>
(default: 240 (seconds))
</LI>
+<LI><B>ppp_keepalive</B> (int)<BR>
+Change this value to no to force generation of LCP ECHO every
+echo_timeout seconds, even there are activity on the link.
+(default: yes)
+</LI>
+
<LI><B>auth_tunnel_change_addr_src</B> (boolean)<BR>
This parameter authorize to change the source IP of the tunnels l2tp.
This parameter can be used when the remotes BAS/LAC are l2tpns server
will drop all routes (raising them again if all slaves disappear) and
subsequently handle only packets forwarded to it by the slaves.<P>
+*Configurable with <B>cluster_master_min_adv</B><P>
+
+Multiple clusters can be run on the same network by just using different
+multicast <B>cluster_address</B>. However, for a given host to be part
+of multiple clusters without mixing the clusters,
+<B>cluster_port</B> must be different for each cluster.<B>
+
<H2 ID="Routing">Routing</H2>
If you are running a single instance, you may simply statically route
the IP pools to the <B>bind_address</B> (l2tpns will send a gratuitous