Cisco 1003 and Cisco 1004 User Guide 37
Configuring Your Cisco 1003 or Cisco 1004 Router
Step 4
Enter the BRI interface, encapsulation method (PPP), target router’s host name
and IP address, ISDN number to dial, and the dialer group.
router (config)# interface bri
port_number
router (config-if)# encapsulation ppp
router (config-if)# ppp authentication chap
router (config-if)# dialer map ip
targetrouter_ipaddress name
targetrouter phonenumber
router (config-if)# dialer-group
groupnumber
Note
Do not use periods or hyphens when entering dialing numbers.
Step 5
Some ISDN switch types such as Basic NI1, or DMS-100 switch service, require
you to configure a Service Profile Identifier (SPID). Enter the SPID information
as follows, substituting the appropriate entries for your installation:
router (config-if)# isdn spid1
SPID_no phone_no
router (config-if)# isdn spid2
SPID_no phone_no
Step 6
To set up a second B channel for bandwidth-on-demand, set the ISDN load
threshold using the load-threshold command. The load threshold determines the
percentage of network loading at which the second ISDN B channel is triggered.
The value ranges from 1 to 255 (100 percent).
router (config-if)# dialer load-threshold 128
In this example, a value of 128 has been chosen. This means that when the first
B channel reaches 50 percent of its bandwidth capacity (128 equals 50 percent of
255), the second B channel will be activated to assist with the bandwidth load.
Step 7
To configure the ISDN line to come up whenever IP packets are to be sent, enter
the access-list command.
router (config-if)# access-list
access-list-number permit ip sourcerouter-ipnetwork
sourcerouter-subnetmask targetrouter-ipnetwork targetrouter-subnetmask
router (config)# dialer-list
groupnumber list access-list-number