amnesiac (config) # radius-server host 10.1.18.55 auth-type mschapv2 key testing123

amnesiac (config) # radius-server host 2600:809:200:412:7a2b:cbff:feld:c793 auth-type mschapv2 key testing123

amnesiac (config) # show radius

RADIUS defaults:

    key:

    timeout: 3

    retransmit: 1

RADIUS servers:

   10.1.18.55:1812
      Enabled: yes

      Auth Type: mschapv2

      Key: pjoqykkDkJLkSAkQDrReIo2Ev1Y724Iq

      Timeout: 3

      Retransmit: 1

   2600:809:200:412:7a2b:cbff:feld:c793:1812

      Enabled: yes

      Auth Type: mschapv2

      Key: =xLso97KDrH0b1uAqJVUQx6G5Uxqtrrn

      Timeout: 3

      Retransmit: 1