Chapter 3 Configuring the Cisco 1604 Router
Step
Step 4—Configuring Basic Rate Interface
Enable the Cisco 1604’s Basic Rate Interface (BRI) connectivity with the telephone company’s central office switch. PPP framing is used on the B channels.
You can authenticate the remote side on any connection. The callin keyword used in Step 7 below means that all outbound connection attempts made by the Cisco 1604 will not authenticate the remote peer, which is the device at the other end of the PPP link (Cisco AS5300). Only the calls that come into the Cisco 1604 are authenticated.
Note On BRI interfaces, it is not necessary to configure dialer inband because the BRI interfaces are dialer inband interfaces by default. Interfaces BRI0:1 and BRI0:2 are controlled by the dialer interface interface bri 0.
To configure BRI on the Cisco 1604, enter the following commands beginning in global configuration mode:
Step 1 Configure the ISDN switch type, which is
Step 2 Configure the IP address and subnet mask on the BRI interface.
Step 3 Configure your SPIDs, which are required by many switch types.
Step 4 Enable PPP.
Step 7 Enable CHAP and PAP authentication on the interface during LCP negotiation. The access server first authenticates with CHAP. If CHAP is not used by the remote client, then the access server tries PAP. CHAP is requested first.
Step 8 Bring up the interface. The no shutdown command changes the state of the interface from administratively down to up.
Cisco IOS Dial Services Quick Configuration Guide
