Directed echo requests and reverse traceroute

Details Directed echo requests and reverse traceroute Directed echo requests and reverse traceroute

2006-09-29

2010-06-29

Vu, Huy D (Department: 2461)

Multiplex communications

Diagnostic testing

Loopback

C370S254000, C370S255000, C370S352000, C370S389000, C370S401000, C709S224000

Reexamination Certificate

active

07746796

ABSTRACT:
In one embodiment, a first node may send an out-of-band message to a second node to request that the second node initiate an in-band echo request for a specified tunnel, e.g., toward one or more third nodes. Upon receiving the in-band echo request, one or more responding nodes (e.g., generally the third nodes) may send a response to the first node. This “directed echo request” technique may also be used in conjunction with a “reverse traceroute” technique.

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