A service provider network has 4 provider edge (PE) routers and 2 provider (P) routers. It...

 

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A service provider network has 4 provider edge (PE) routers and 2 provider (P) routers. It supports a VPN of company A using MPLS/VPN architecture. The topology of the network is shows in figure 2. Site 1 Site 2 Site 3 Site 4 PE1 PE3 FO/0 FO/0 FO/0 FO/1 P11 FO/2 FO/2 FO/0 P12 Figure 2: MPLS/VPN topology FO/1 FO/0 FO/0 PE2 PE4 Site 5 Site 6 Site 7 Note that even the diagram shows only one connection between a site and its PE, you may use as many connections as necessary in your VPN design. The logical topology of company A is shown in figure 3. In the logical topology the network architect considered 2 full meshes and one hub and spoke. One full mesh is consist of site 3, site 6 and site 7 and another full mesh is consist of site 1, site 4 and site 6. The hub and spoke is consist of site 2, site 4, site 5 and site 7, where site 4 is the hub site. 10.12.0.0/16 Site 2 10.14.0.0/16 Site 4 10.11.0.0/16 Site 5 Site 1 Hub and Spoke 10.15.0.0/16 Full mesh Site 6 10.160.0/16 Figure 3: MPLS/VPN logical topology Full mesh Site 7.. 10.17.0.0/16 10.13.0.0/16 Site 3: a. a) Design the VRFs for this VPN. Choose the appropriate values of RT(s) and RD(s) in each VRF. Label the interfaces of the PEs (e.g. f0/0, f0/1, ... etc) used to connect the customer sites. You may choose any appropriate interface values. Minimize the number of VRFs, RTS and RDs used in your design. (10 Marks) A service provider network has 4 provider edge (PE) routers and 2 provider (P) routers. It supports a VPN of company A using MPLS/VPN architecture. The topology of the network is shows in figure 2. Site 1 Site 2 Site 3 Site 4 PE1 PE3 FO/0 FO/0 FO/0 FO/1 P11 FO/2 FO/2 FO/0 P12 Figure 2: MPLS/VPN topology FO/1 FO/0 FO/0 PE2 PE4 Site 5 Site 6 Site 7 Note that even the diagram shows only one connection between a site and its PE, you may use as many connections as necessary in your VPN design. The logical topology of company A is shown in figure 3. In the logical topology the network architect considered 2 full meshes and one hub and spoke. One full mesh is consist of site 3, site 6 and site 7 and another full mesh is consist of site 1, site 4 and site 6. The hub and spoke is consist of site 2, site 4, site 5 and site 7, where site 4 is the hub site. 10.12.0.0/16 Site 2 10.14.0.0/16 Site 4 10.11.0.0/16 Site 5 Site 1 Hub and Spoke 10.15.0.0/16 Full mesh Site 6 10.160.0/16 Figure 3: MPLS/VPN logical topology Full mesh Site 7.. 10.17.0.0/16 10.13.0.0/16 Site 3: a. a) Design the VRFs for this VPN. Choose the appropriate values of RT(s) and RD(s) in each VRF. Label the interfaces of the PEs (e.g. f0/0, f0/1, ... etc) used to connect the customer sites. You may choose any appropriate interface values. Minimize the number of VRFs, RTS and RDs used in your design. (10 Marks)