Determining connectivity status for unnumbered interfaces of a target network device
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United States of America Patent
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Feb 14, 2012
Grant Date -
Aug 16, 2007
app pub date -
Jun 1, 2006
filing date -
Jan 30, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
Techniques are described for testing connectivity to unnumbered interfaces of a target device. For example, a software utility and protocol are described that allows an administrator to specify a logical offset that may be internally resolved by the target device to one of a plurality of unnumbered interfaces during the test. Similarly, the administrator may specify an offset that may be internally resolved by the source device to one of a plurality of unnumbered interfaces from which the connectivity test is to originate. The source device may send enhanced request packets and receive enhanced reply packets specifying the source unnumbered interface and the destination unnumbered interface between which connectivity is to be tested. In this manner, an administrator may test for connectivity of particular interfaces even where internet protocol (IP) addresses or other identifiers for the interfaces are not externally known.
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