Multiplex communications – Network configuration determination
Reexamination Certificate
2008-08-13
2010-06-01
Vu, Huy D (Department: 2461)
Multiplex communications
Network configuration determination
C370S352000, C370S389000, C370S395540
Reexamination Certificate
active
07729292
ABSTRACT:
One embodiment of the present invention provides a system that detects a non-compliant router that incorrectly responds to all address-resolution-protocol (ARP) requests, including ARP requests and ARP probes for link-local IP addresses. This is accomplished by sending an ARP request asking for an Ethernet address associated with a link-local IP address, wherein the link-local IP address is a reserved link-local IP address, which should not be assigned to any device. If a response is received to the ARP request, the system determines that the response was sent by a non-compliant router that incorrectly responds to all ARP requests, including ARP requests for link-local IP addresses.
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Cheshire Stuart D.
Graessley Joshua V.
Apple Inc.
Jones Anthony P.
Park Vaughan & Fleming LLP
Renner Brandon
Vu Huy D
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