Switch Support for MACsec GCM-AES-256

[imcfadri]

Does anyone know of a Cisco switch that supports MACsec cipher GCM-AES-256?

[Michael Donaldson]

Hi imcfadri,

The Cisco 3850 and 3650 switches running IOS XE 16.x support GCM-AES-256 cipher suite.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3650/software/release/16-3/configuration_guide/b_163_consolidated_3650_cg/b_163_consolidated_3650_cg_chapter_01011001.html

[jhuang4]

A C9200CX switch running IOS XE 17.09.01 does not support GCM-AES-256.  Is this because the IOS is outdated? If I want to use GCM-AES-256, do I need to upgrade IOS to 18.xx?  Thanks.