Merging MurphyMc LinearTopo pull request

bin/mn

@@ -281,7 +281,7 @@ if __name__ == "__main__":
     try:
         MininetRunner()
     except KeyboardInterrupt:
-        info( "Keyboard Interrupt. Shutting down and cleaning up...")
+        info( "\n\nKeyboard Interrupt. Shutting down and cleaning up...\n\n")
         cleanup()
     except Exception:
         # Print exception

mininet/topo.py

@@ -249,6 +249,12 @@ class LinearTopo(Topo):
         self.k = k
         self.n = n
 
+        if n == 1:
+            genHostName = lambda i,j: 'h%s' % i
+        else:
+            genHostName = lambda i,j: 'h%ss%d' % (j,i)
+
+
         lastSwitch = None
         for i in irange(1, k):
             # Add switch
@@ -256,7 +262,8 @@ class LinearTopo(Topo):
             # Add hosts to switch
             for j in irange(1, n):
                 hostNum = (i-1)*n + j
-                host = self.addHost('h%s' % hostNum)
+                #host = self.addHost('h%s' % hostNum)
+                host = self.addHost(genHostName(i, j))
                 self.addLink(host, switch)
             # Connect switch to previous
             if lastSwitch: