Routing: OSPF, Hierarchical routing, BGP

1
Advanced Networking
Routing:
OSPF, Hierarchical routing, BGP
 


 



2
3
Renato.LoCigno@dit.unitn.it
Advanced Networking  Introduction 7
Flooding
"+ 2 
+
 





/
 


"2



 5
+





 
 +
 5 

   
 B

 52


 5
 
+

+
 


4
5
6
7
8
9
10
11
Renato.LoCigno@dit.unitn.it
Advanced Networking  Introduction 31
Neighbor Acquisition
 @ 
+  + 
 

5)    


 

 @ 
+ B



  
+



 


 @ +  

 & B1
 
 N 


 
+




 + 
2
2

12
13
Renato.LoCigno@dit.unitn.it
Advanced Networking  Introduction 37
Path Attributes Field
 & 


 
!& )"7(
!CH"(
 5) R"
 5)  2

 @ R 
 "+
:
R?
R

  
+
5)
 R"
 3 

5) 
 5
R515
 4 +
2
  
 


@ 
14