Patent ID: 8576866
Filing Date: 2013-11-05
Classification: G06F,H04L

Abstract:
1. A method for rate limiting control packets performed on a line card of a network element, comprising: receiving a plurality of control packets at the line card, wherein the line card includes a plurality of networking processing units (NPU) coupled with different ones of a plurality of ports of the line card; for each received control packet, performing the following: determining a protocol type of that control packet, extracting a set of one or more identifier keys in that control packet based on the determined protocol type of that control packet, performing an identifier key based rate limiting on that control packet based on the set of extracted identifier keys and the determined protocol type of that control packet, which include the steps of: further wherein for each of the received control packets that pass the control packet level rate limiting, performing the following: for each packet control packet received on the central line processor, performing the following: