In-depth introduction to configuring static routes by default

By default, you need to pay special attention to how to effectively configure static routes. Here we will give you a detailed introduction to this problem. Default route: the default route (default route) is a special type of static route.

When the destination to which a data packet is routed does not have corresponding entries in the routing table, or it is difficult to maintain more routing information in the route table, the default route can be used. the command Iproute is still used to define the default route, but the target network and subnet mask use special parameters. The target network uses 0.0.0.0 (indicating a non-existent network, and uses a special subnet mask to indicate the default network ), the subnet mask uses 0.0.0.0 (representing the Special mask of the default route ). command showiproute to view the route table. You can verify the static route or configure the static route by default.

Configure static route R1

 
 

  
  
Router> enable
  
  
Router # configt
  
  
Router (config) # hostnameR1
  
  
R1 (config) # interfacee0
  
  
R1 (config-if) # ipadd172.16.3.1255.255.255.0
  
  
R1 (config-if) # noshutdown
  
  
R1 (config-if) # exit
  
  
R1 (config) # ints0
  
  
R1 (config-if) # ipadd172.16.1.1255.255.255.0
  
  
R1 (config-if) # clockrate56000
  
  
R1 (config-if) # noshutR1 (config-if) # exit
  
  
R1 (config) # iproute0.0.0.00.0.0.0172.16.1.2 Add the default route
  
  
 
 
 

Configure static Route 2

 
 

  
  
Router>enable  
  
  
Router#configterminal  
  
  
Router(config)#hostnameR2  
  
  
R2(config)#interfacee0  
  
  
R2(config-if)#ipadd172.16.4.1255.255.255.0  
  
  
R2(config-if)#noshut  
  
  
R2(config-if)#exit  
  
  
R2(config)#interfaces0  
  
  
R2(config-if)#ipadd172.16.1.2255.255.255.0  
  
  
R2(config-if)#noshut  
  
  
R2(config-if)#ints1  
  
  
R2(config-if)#ipadd172.16.2.1255.255.255.0  
  
  
R2(config-if)#noshut  
  
  
R2(config-if)#clockrate56000  
  
  
R2(config-if)#exit  
  
  
R2(config)#iproute172.16.3.0255.255.255.0172.16.1.1  
  
  
R2(config)#iproute172.16.5.0255.255.255.0172.16.2.2  
  
  
 
 
 

Configure Static Routing 3

 
 

  
  
Router> enable
  
  
Router # configt
  
  
Router (config) # hostR3
  
  
R3 (config) # inte0
  
  
R3 (config-if) # ipadd172.16.5.1255.255.255.0
  
  
R3 (config-if) # noshut
  
  
R3 (config-if) # exit
  
  
R3 (config) # ints0
  
  
R3 (config-if) # ipadd172.16.2.22.16255.255.0
  
  
R3 (config-if) # clockrate56000
  
  
R3 (config-if) # noshutdown
  
  
R3 (config-if) # exit
  
  
R3 (config) # iproute0.0.0.00.0.0.0171_2.1 Add the default route
 
 

Tip: in the simulator. The clock is set in each vro, but in reality it is not required. The clock is provided by the carrier, and the clock is set on the DCE. DTE: dateterminalequipment (data terminal device). DTE provides or accepts data. PC is a DTE. DTE and DCE determine the method: DTE: is a data terminal device, such as a terminal, is a broad concept. A pc can also be a terminal. (Generally, the DTE devices in the WAN are routers and terminal hosts.) DCE is a data communication device, such as Modem, which connects to the DTC device. Generally, DEC devices in the WAN include CSU/DSU, Wan switch, and Modem)