If the remote device
does not support either protocol, the authentication fails and the PPP session is
dropped.
Table 8-1 username Parameters
Parameter Description
name This is the host name of the remote router. Note that the host name
is case sensitive.
password On Cisco routers, the password must be the same for both routers.
In Cisco IOS Software prior to Release 11.2, this password was an
encrypted, secret password. As of Release 11.2, the password is a
plain-text password and is not encrypted. To encrypt passwords on
your Cisco IOS router, use the service password-encryption
command while in global con?¬?guration mode.
NOTE If you enable both methods, the ?¬?rst method that you specify is requested during
link negotiation. If the peer suggests using the second method or refuses the ?¬?rst method,
the second method is tried.
322 Chapter 8: Extending the Network into the WAN
Example: PPP and CHAP Configuration
Figure 8-20 shows an example of CHAP con?¬?guration on two routers. In this example, a
two-way challenge occurs. The hostname on one router must match the username that the
other router has con?¬?gured. The passwords must also match.
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