+------------+           
                                                     |Internetwork|           
                                                     +-----+------+           
                +------------------+                       |                  
 +------------+ | Server(www,file) |   +------------+   +--+---+              
 | DNS Server | |- Console Server -|   |Print Server|   |Router|              
 +--------+---+ +--------+---------+   +-----+------+   +--+---+              
          |80            |10                 |75           |1 192.168.0.0/24  
 +--------+--------------+------------+------+-+--------+--+-----+---------+  
       252| <-- HSRP --> |253         |        |        |        |            
     +----+-----+  +-----+----+    +--+-+   +--+-+   +--+-+   +--+-+          
     |Cisco 2620|  |Cisco 2620|    | PC |   | PC |   | PC |   | PC |          
     +----+-----+  +-----+----+    +----+   +----+   +----+   +----+          
       252| <-- HSRP --> |253                                  172.16.2.0/24  
 +--------+--------------+-------------------+-----------------------------+  
         3| <-- VRRP --> |2                  |50                              
  +-------+-----+  +-----+-------+   +-------+--------+                       
  |Load Balancer|  |Load Balancer|   | Reverse Proxy  |                       
  +-------+-----+  +-----+-------+   +-------+--------+                       
       252| <-- VRRP --> |253                |50               172.16.3.0/24  
 +--------+--------------+-------------------+-----------------------------+  
         2|              |1                                                   
 +--------+-----+  +-----+--------+                                           
 |  Web Server  |  |  Web Server  |                                           
 +-----------+--+  +--+-----------+                                           
            2|        |1                                                      
          252|        |253     172.16.4.0/24                                  
           +-+--------++                                                      
           |- NAS, DB -|                                                      
           +-----------+