Distributed WAN Considerations

Your network might include international WAN links. If this is the case, you likely have one or two main connections between, for example, the United States and Europe and several WAN connections within tl locations to interconnect sites. Assuming the master AAA server is in the United States, the recommend synchronization method for Europe would be to first synchronize from the United States to a primary loc Europe and then from that European server to all other local servers. This allows for a more efficient use bandwidthjust make sure that the two main servers are highly available to one another. This is shown in 5.

Figure 9-5. Global AAA Deployment

Figure 9-5. Global AAA Deployment

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