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    9. MX Network Deployment > Plans and Topology

    Plans and Topology

    The company was planning on deploying a four-node backbone that had full mesh interconnectivity. The remaining locations were to be fed from this backbone square. The peering ISPs connected to two of the backbone nodes. The initial network diagram is show in Figure 9-1.

    Network topology

    Figure 9-1. Network topology

    Routers RTR_1 through RTR_5 were to be deployed initially, and the other six as those customers came online. The backbone links were all 10 Gbps links, while the access links and the ISP links were initially 1 Gbps links. The plan was to upgrade the ISP links to 10 Gbps as well as the business demands increased.

    The key elements of the design were:

    Survivability

    The backbone and the edge devices should be as reliable as possible. The links and the hardware should be able to absorb a single failure and not isolate users.


      

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