Add "$ns rtproto Session" and change tge FAQ and tutorial as needed.

www/faq.html

@@ -621,7 +621,7 @@
     who are using one of our provided FreeBSD or Linux disk images.
     Simply adding:
 <pre>
-tb-set-ip-routing ospf
+$ns rtproto Session
 </pre>
     to your NS file will enable <code>gated</code> running the OSPF
     protocol on all nodes in the experiment.

www/tutorial/nscommands.html

@@ -10,7 +10,6 @@
   <li><a href="#ORDER">Ordering issues</a>
   <li><a href="#HARD">Hardware Commands</a>
   <li><a href="#IP">IP Address Commands</a>
-  <li><a href="#ROUTE">IP Routing Commands</a>
   <li><a href="#OS">OS Commands</a>
   <li><a href="#LOSS">Link Characteristic Commands</a>
   <li><a href="#VTYPE">Virtual Type Commands</a>
@@ -267,35 +266,6 @@ tb-set-ip-interface $node2 $node1 142.3.4.6
 </ul>
 
 
-<hr>
-
-<a name="ROUTE"></a><h3>IP Routing Commands</h3>
-
-We currently provide a simple mechanism for setting up default IP routes
-between nodes in an experiment.
-
-<h4>tb-set-ip-routing</h4>
-
-<pre>
-tb-set-ip-routing <i>protocol</i>.
-
-tb-set-ip-routing none
-tb-set-ip-routing ospf
-</pre>
-
-<dl>
-  <dt><i>protocol</i> - The routing protocol to use.
-</dl>
-
-<p>Notes:
-
-<ul>
-  <li><code>none</code> is the default protocol;
-      i.e., no default routing is setup.
-  <li><code>ospf</code> is implemented by running <tt>gated</tt>
-      on all nodes in the experiment.
-</ul>
-
 <hr>
 
 <a name="OS"></a><h3>OS Commands</h3>

www/tutorial/tutorial.html

@@ -707,17 +707,18 @@ an option to automatically set up routes on nodes which run one of our
 provided FreeBSD or Linux disk images.
 
 <p>
-You can use the <tt>tb-set-ip-routing</tt> command in your NS file to
-enable automatic routing:
+You can use the NS <tt>rtproto</tt> syntax in your NS file to enable
+automatic routing:
 <code><pre>
-tb-set-ip-routing <i>protocol</i>
+$ns rtproto <i>protocol</i>
 </pre></code>
-where <i>protocol</i> is either <code>none</code>, the default for no
-automatic routing, or <code>ospf</code> to enable <code>gated</code>
-running the OSPF protocol on all nodes in the experiment.
-In the future we may add support for automatic pre-computation of static
-routes as well as the ability for users to specify per-node routing
-information in the NS file.
+where <i>protocol</i> is currently limited to <code>Session</code>.
+The implementation of <code>Session</code> routing is to enable
+<code>gated</code> running the OSPF protocol on all nodes in the
+experiment.  The default is no automatic routing (or routing of any
+kind).  In the future we may add support for automatic pre-computation
+of static routes as well as the ability for users to specify per-node
+routing information in the NS file.
 
 <p>
 If you do want to setup and manage routing yourself, you can use the