Cisco 700 Series Configuration Manual page 81

Figure A-2 PAP Client Packet
Client
username
token
Figure A-3 CHAP Local Secret
Client
username*token
PPP PAP Packet
username
Cisco 700 Series Router Configuration
authorization protocol = PAP
local secret = N/A
PPP PAP Packet
username*token
Cisco 700 Series Router Configuration
authorization protocol = CHAP
use local secret = Yes
secret = knock
Token Card and Cisco Secure Authentication Support A-3
Token Caching
token
MD5 (challenge, knock)