Communication techniques and generic layer 3 automatic...

Details Communication techniques and generic layer 3 automatic... Communication techniques and generic layer 3 automatic...

2011-01-11

2011-01-11

Nguyen, Brian D (Department: 2472)

Multiplex communications

Fault recovery

Bypass an inoperative channel

C370S469000

Reexamination Certificate

active

07869351

ABSTRACT:
In one embodiment, software code in a respective computer system such as one or more data communication devices establishes multiple layer 2 network links between a first data communication device and a second data communication device. The first data communication device and the second data communication device include corresponding layer 3 interfaces enabling layer 3 network communications over each of the multiple layer 2 network links. The first and second data communication devices route traffic over one (e.g., a primary layer 2 link) of the multiple layer 2 network links using the layer 3 network communications. The private links are media independent. Upon detection of a failure associated with the primary layer 2 link, the data communication devices can automatically switch to sending traffic over a backup link of the multiple layer 2 network links without disrupting publicly advertised routing topology information.

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Biancuzzi, Federico, OpenBSD 3.8: Hackers of the Lost RAID, dated Oct. 20, 2005, pp. 1-4, http://onlamp.com.

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