Technical data
Cisco 1604 Configuration 3-9
Step 4—Configuring BRI
Received 2 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
28 packets output, 2905 bytes, 0 underruns
25 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
3 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Step 4—Configuring BRI
Enable BRI connectivity with the central office switch. PPP framing is used on the B channels.
Dial-on-demand routing (DDR) is configured in the next section “Step 5—Configuring DDR.”
Note The dialer in-band command does not need to be configured on the BRI interface. A BRI
interface is a dialer in-band interface by default. Interface BRI0:1 and BRI0:2 are controlled by the
dialer interface “interface bri 0.”
Configure
To configure BRI, use the following commands beginning in global configuration mode:
Step Command Purpose
1
robo-austin(config)# isdn switch-type basic-ni1
Configure the ISDN switch type, which is
basic-ni1 in this example.
2
robo-austin(config)# interface bri 0
robo-austin(config-if)# ip address 10.1.254.4 255.255.255.0
Configure the IP address and subnet mask
on the BRI interface.
3 8
robo-austin(config-if)# isdn spid1 51255544330101
robo-austin(config-if)# isdn spid2 51255544340101
Configure your SPIDs, which are required
by many switch types.
4
robo-austin(config-if)# encapsulation ppp
Enable PPP.
5
robo-austin(config-if)# no fair-queue
Disable fair queuing.
6
robo-austin(config-if)# ppp multilink
Enable PPP multilink.
7
robo-austin(config-if)# ppp authentication chap pap callin
Enable CHAP and PAP authentication on
the interface during LCP negotiation.
The access server will first authenticate
with CHAP. If CHAP is not used by the
remote client, then PAP is tried. CHAP is
requested first.
1
1. You have the choice to authenticate the remote side on any connection. The callin keyword means that all outbound connection attempts made by the Cisco 1604
will not authenticate the remote peer. The remote peer is the device at the other end of the PPP link (Cisco AS5300). Only the calls that come into the Cisco 1604
will be authenticated.
8
robo-austin(config-if)# no shutdown
Bring up the interface.
2
2. The no shutdown command changes the state of the interface from administratively down to up.