3com S7906E Manuel De Montage

 

1-3 

Figure 1-1 A sample routing table 

Router A

Router B

Router H

Router E

16.0.0.2

17.0.0.3

15.0.0.0

12.0.0.0

17.0.0.0

11.0.0.0

16.0.0.0

13.0.0.0

14.0.0.0

Router C

Router D

Router F

Router G

11.0.0.1

12.0.0.1

12.0.0.2

15.0.0.1

15.0.0.2

17.0.0.1

16.0.0.1

13.0.0.1

13.0.0.2

14.0.0.1

14.0.0.2

14.0.0.3

14.0.0.4

17.0.0.2

11.0.0.2

13.0.0.3

 

Destination Network 

Nexthop 

Interface 

11.0.0.0 11.0.0.1 2 
12.0.0.0 12.0.0.1 1 
13.0.0.0 12.0.0.2 1 
14.0.0.0 14.0.0.4 3 
15.0.0.0 14.0.0.2 3 
16.0.0.0 14.0.0.2 3 
17.0.0.0 11.0.0.2 2 

 

Static routing is easy to configure and requires less system resources. It works well in small, stable 

networks with simple topologies. Its major drawback is that you must perform routing configuration 

again whenever the network topology changes; it cannot adjust to network changes by itself. 

Dynamic routing is based on dynamic routing protocols, which can detect network topology changes 

and recalculate the routes accordingly. Therefore, dynamic routing is suitable for large networks. Its 

disadvantages are that it is difficult to configure, and that it not only imposes higher requirements on the 

system, but also consumes a certain amount of network resources. 

Dynamic routing protocols can be classified based on the following standards: 

z 

Interior gateway protocols (IGPs): Work within an autonomous system, including RIP, OSPF, and 

IS-IS.