Configurable geographic prefixes for global server load balancing
DC CAFCFirst Claim
1. A method, comprising:
- storing an address prefix that corresponds to a geographic region; and
for a network address that has a particular address prefix that matches the stored address prefix, associating said network address to said geographic region, said geographic region being different from an original geographic region that corresponds to the particular address prefix.
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Abstract
In a load balancing system, user-configurable geographic prefixes are provided. IP address prefix allocations provided by the Internet Assigned Numbers Authority (IANA) and associated geographic locations are stored in a first, static database in a load balancing switch, along with other possible default geographic location settings. A second, non-static database stores user-configured geographic settings. In particular, the second database stores Internet Protocol (IP) address prefixes and user-specified geographic regions for those prefixes. The specified geographic region can be continent, country, state, city, or other user-defined region. The geographic settings in the second database can override the information in the first database. These geographic entries help determine the geographic location of a client and host IP addresses, and aid in directing the client to a host server that is geographically the closest to that client.
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Citations
12 Claims
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1. A method, comprising:
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storing an address prefix that corresponds to a geographic region; and for a network address that has a particular address prefix that matches the stored address prefix, associating said network address to said geographic region, said geographic region being different from an original geographic region that corresponds to the particular address prefix. - View Dependent Claims (2, 3)
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4. An apparatus, comprising:
a network device that includes; a storage unit to store an address prefix that corresponds to a geographic region; and a controller coupled to the storage unit to, for a network address that has a particular address prefix that matches the stored address prefix, associate said network address to said geographic region, said geographic region being different from an original geographic region that corresponds to the particular address prefix. - View Dependent Claims (5, 6, 7)
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8. An apparatus, comprising:
a network device that includes; means for storing an address prefix that corresponds to a geographic region; and for a network address that has a particular address prefix that matches the stored address prefix, means for associating said network address to said geographic region, said geographic region being different from an original geographic region that corresponds to the particular address prefix. - View Dependent Claims (9, 10, 11, 12)
Specification