Patent ID: 11962516
Assignee: CISCO TECHNOLOGY, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. One or more non-transitory computer readable storage media encoded with instructions that, when executed by a processor, cause the processor to:
receive a packet;
hash elements of the packet to obtain a packet partial signature;
append, to the packet partial signature, unhashed packet information to obtain a concatenated string of the packet partial signature and the unhashed packet information;
generate an action data value by hashing the concatenated string of the packet partial signature and the unhashed packet information;
access a hash store location in a hash store using the action data value as an address;
determine, based on data stored at the hash store location, whether the packet is a duplicate of a previously-received packet; and
based on whether the packet is a duplicate of a previously-received packet, one of allow and prevent one of the packet and a copy of the packet to reach a downstream network node.