IEEE 802.1AE and IEEE 802.1AF are two IEEE 802.1X standards providing security to the data link layer. The IEEE 802.1AE is the IEEE MAC Security standard (also known as MACSec), it defines data confidentiality and integrity for media access independent protocols but lacks in providing key management and the establishment of secure associations. IEEE 802.1AF MACSec Key Agreement will facilitate secure communication over publicly accessible LAN/MAN, with key management and establishment of secure associations, by exclusive use of secret key cryptographic algorithms. This paper will give them an insight of MACSec Key Agreement (MKA) is implemented in the Linux environment.