IP Router Configuration Command Reference
154 Router Configuration Guide
password
Syntax password password [hash | hash2]
no password
Context config>router>l2tp>group
config>router>l2tp>group>tunnel
Description This command configures the password between L2TP LAC and LNS
The no form of the command removes the password.
Default no password
Parameters password  — Configures the password used for challenge/response calculation and AVP hiding. 
The maximum length can be up to 20 characters if unhashed, 32 characters if hashed, 54 
characters if the hash2 keyword is specified.
hash — Specifies the key is entered in an encrypted form. If the hash or hash2 parameter is not 
used, the key is assumed to be in an unencrypted, clear text form. For security, all keys are 
stored in encrypted form in the configuration file with the hash or hash2 parameter specified
hash2 — Specifies the key is entered in a more complex encrypted form that involves more 
variables than the key value alone, meaning that the hash2 encrypted variable cannot be 
copied and pasted. If the hash or hash2 parameter is not used, the key is assumed to be in an 
unencrypted, clear text form. For security, all keys are stored in encrypted form in the 
configuration file with the hash or hash2 parameter specified.
ppp
Syntax ppp
Context config>router>l2tp>group
Description This command configures PPP for the L2TP tunnel group.
authentication
Syntax authentication {chap | pap | pref-chap}
Context config>router>l2tp>group>ppp
Description This command configures the PPP authentication protocol to negotiate.
authentication-policy
Syntax authentication-policy auth-policy-name