802.1AEbn-2011 - IEEE Standard for Local and metropolitan area networks--Media Access Control (MAC) Security Amendment 1: Galois Counter Mode--Advanced Encryption Standard-- 256 (GCM-AES-256) Cipher Suite
Description: This amendment specifies the GCM-AES-256 Cipher Suite as an option in addition to the existing mandatory to implement Default Cipher Suite, GCM-AES-128.