Handling link failures with re-tagging

Details Handling link failures with re-tagging Handling link failures with re-tagging

2004-06-28

2010-02-02

Rao, Seema S (Department: 2416)

Multiplex communications

Fault recovery

Bypass an inoperative station

C370S252000, C370S392000, C370S400000

Reexamination Certificate

active

07656790

ABSTRACT:
One embodiment disclosed relates to a method of handling link failures between switches. A failed link is detected at a detecting switch. The detecting switch determines a set of path tags whose paths are affected by the failed link. Subsequently, when packets are received with one of the path tags affected by the failed link, those packets are retagged with a detour path tag associated with a detour path circumventing the failed link. Another embodiment disclosed relates to a packet switch apparatus with link failure handling capability for use in a switching mesh. Another embodiment disclosed relates to a switching mesh including a capability to handle link failures.

REFERENCES:
patent: 6493318 (2002-12-01), Bare
patent: 6577600 (2003-06-01), Bare
patent: 6580715 (2003-06-01), Bare
patent: 6963575 (2005-11-01), Sistanizadeh et al.
patent: 7133358 (2006-11-01), Kano
patent: 2002/0083174 (2002-06-01), Hayashi et al.
patent: 2004/0190446 (2004-09-01), Ansorge et al.
patent: 2005/0286411 (2005-12-01), Alicherry et al.

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