IEEE 802.1AEbn-2011 PDF
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.
Amendment Standard – Superseded. 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.