The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 04, 2017

Filed:

Apr. 30, 2016
Applicant:

Arista Networks, Inc., Santa Clara, CA (US);

Inventors:

Charles Melvin Aden, Santa Clara, CA (US);

Xiaoping Han, Santa Clara, CA (US);

Assignee:

Arista Networks, Inc., Santa Clara, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/17 (2006.01); G06F 12/02 (2006.01); H03K 19/177 (2006.01); H04L 12/24 (2006.01); G11C 19/00 (2006.01);
U.S. Cl.
CPC ...
H03K 19/17756 (2013.01); G06F 12/0246 (2013.01); G11C 19/00 (2013.01); H03K 19/17752 (2013.01); H04L 41/08 (2013.01); G06F 2212/7208 (2013.01);
Abstract

A method for upgrading a programmable logic device (PLD) in a network element is provided. The method includes writing PLD configuration data to a nonvolatile memory and directing a signal control device external to the PLD to hold system control signals in the network element at a predefined state irrespective of direction by the PLD. The method includes loading the PLD configuration data from the nonvolatile memory into a PLD configuration memory in the PLD, while the signal control device holds the system control signals at the predefined values. The method includes directing the signal control device to release the holding the system control signals, so that the PLD directs the system control signals, responsive to completion of the loading the PLD configuration data into the PLD configuration memory. A network element is also provided.


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