Consider the following network of five hosts (h1 to h5), five Openflow switches (s1 to s5)...

Transcribed Image Text:

Consider the following network of five hosts (h1 to h5), five Openflow switches (s1 to s5) and SDN controller c1. The black solid lines indicate physical links between devices, and the orange dashed lines indicate logical channels between the controller and OpenFlow switches. hl: 192.168.0.1 h2: 192.168.0.2 IEEE ● 3 • • cl Assume that IP flows exist between every source-destination pair in this network. The following routing rules must be implemented in this network: Switch MAC MAC Eth VLAN IP Port src dst type ID Src $5 • All traffic between h1 to h4 or h5 (in both directions) must travel through route s1-s2-s5-s4 ● Web traffic between clients on h1 and an HTTP server on h3 (queries and responses) must travel through route s1-s2-s5. Web traffic between clients on h2 and an HTTP server on h3 (queries and responses) must travel through route s1-s3-s5. h3:10.0.0.1 IP Dst h4: 172.16.0.1 h5: 172.16.0.2 Clients on h4 and h5 must be blocked from accessing the HTTP server on h3. All other IP traffic (except those mentioned in the above) between hosts in this network should go through the shortest path route (minimum number of hops). If there are two paths with equal number of hops, choose the one that uses the next- hop switches with a lower index (e.g. s2 is given preference over s3) IP Prot Determine the flow table entries that must be installed in each switch (s1, s2, s3, s4 and s5). Use the following format for entries: TCP TCP sport port Action Consider the following network of five hosts (h1 to h5), five Openflow switches (s1 to s5) and SDN controller c1. The black solid lines indicate physical links between devices, and the orange dashed lines indicate logical channels between the controller and OpenFlow switches. hl: 192.168.0.1 h2: 192.168.0.2 IEEE ● 3 • • cl Assume that IP flows exist between every source-destination pair in this network. The following routing rules must be implemented in this network: Switch MAC MAC Eth VLAN IP Port src dst type ID Src $5 • All traffic between h1 to h4 or h5 (in both directions) must travel through route s1-s2-s5-s4 ● Web traffic between clients on h1 and an HTTP server on h3 (queries and responses) must travel through route s1-s2-s5. Web traffic between clients on h2 and an HTTP server on h3 (queries and responses) must travel through route s1-s3-s5. h3:10.0.0.1 IP Dst h4: 172.16.0.1 h5: 172.16.0.2 Clients on h4 and h5 must be blocked from accessing the HTTP server on h3. All other IP traffic (except those mentioned in the above) between hosts in this network should go through the shortest path route (minimum number of hops). If there are two paths with equal number of hops, choose the one that uses the next- hop switches with a lower index (e.g. s2 is given preference over s3) IP Prot Determine the flow table entries that must be installed in each switch (s1, s2, s3, s4 and s5). Use the following format for entries: TCP TCP sport port Action

Answer rating: 100% (QA)

Implement flow rules for traffic between h1 and h4h5 To ensure that all traffic between h1 and h4h5 travels through route s1s2s3s4s5 we need to install flow table entries in switches s1 s2 s3 and s4 T... View the full answer