ADTRAN AOS Version R10.1.0 Command Reference Manual page 2572

Command Reference Guide
On the peer (host name Peer):
Peer(config-ppp 1)#ppp authentication chap
Peer(config-ppp 1)#username Local password same
This is basically identical to Example 1 except that both routers will now challenge each other and
respond.
Both ends must have identical passwords.
Configuring CHAP Example 4: Both routers require each other to authenticate themselves using
two separate shared passwords.
On the local router (host name Local):
Local(config-ppp 1)#ppp authentication chap
Local(config-ppp 1)#username Peer password far
Local(config-ppp 1)#ppp chap password near
On the peer (host name Peer):
Peer(config-ppp 1)#ppp authentication chap
Peer(config-ppp 1)#username Local password near
Peer(config-ppp 1)#ppp chap password far
This is basically identical to Example 3, except that there are two separate shared passwords.
Notice this example has both ends using different sets of passwords.
Configuring CHAP Example 5: Using the ppp chap hostname command as an alternate solution.
On the local router (host name Local):
Local(config-ppp 1)#ppp authentication chap
Local(config-ppp 1)#username farend password far
Local(config-ppp 1)#ppp chap hostname nearend
Local(config-ppp 1)#ppp chap password near
On the peer (host name Peer):
Peer(config-ppp 1)#ppp authentication chap
Peer(config-ppp 1)#username nearend password near
Peer(config-ppp 1)#ppp chap hostname farend
Peer(config-ppp 1)#ppp chap password far
60000CRG0-35E Copyright © 2012 ADTRAN, Inc.
PPP Interface Command Set
2572