Arrangement for tracking IP address usage based on authenticated link identifier
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United States of America Patent
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Nov 29, 2011
Grant Date -
Feb 9, 2006
app pub date -
Aug 9, 2004
filing date -
Aug 9, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Link layer authentication information is supplied by a link layer authentication device to an access router for tracking IP address usage by a client device. The authentication information supplied to the access router includes an authenticated client identifier and a corresponding authenticated link identifier for the client device that attached to the network based on the authenticated link identifier. The access router, in response to receiving a message that specifies the authenticated link identifier and a source IP address, adds the source IP address to a cache entry that specifies the authenticated client identifier and the corresponding authenticated link identifier, and outputs to an audit resource a record that specifies the source IP address and the authenticated link identifier.
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