This eliminates the need for end users to choose a server from a list of possible sites. Cisco DistributedDirector Using DRP Topological Proximity Metrics Figure 2 illustrates the components of the DistributedDirector system. Calif. If a client based in the United States issues a query for HTTP service, DistributedDirector will direct the user to the HTTP server site in San Jose. If the same query is issued by a user in Paris, the user will be directed to the server site located in Brussels. Because traffic to geographically dispersed Web sites remains localized, customers benefit from improved Internet service performance and transmissions cost savings.
Normal configuration is done in a few commands.
DistributedDirector does not require any specialized client or server software. Note that, when topological proximity metrics are used, DistributedDirector makes decisions based on BGP and IGP information. Thus, when topological proximity metrics are used, all DRP server agents must have access to full BGP and IGP routing tables. No new software is required on the primary DNS server. If desired, DNS resource records used by Distributed- Director may be configured in an external server instead of in the DistributedDirector itself.