Step 5-configuring dial-on-demand routing, Step 5—configuring dial-on-demand routing – Cisco 1604 User Manual
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Cisco IOS Dial Services Quick Configuration Guide
Chapter 3
Configuring the Cisco 1604 Router
Step 5—Configuring Dial-on-Demand Routing
Step 3
Enter the show ip interface brief command to check the current state of the interface:
robo-austin# show ip interface brief
Interface IP-Address OK? Method Status Protocol
BRI0 10.1.254.4 YES manual up up
BRI0:1 unassigned YES unset down down
BRI0:2 unassigned YES unset down down
Ethernet0 10.1.4.1 YES manual up up
Serial0 unassigned YES unset administratively down down
Note
Note that the status and protocol for BRI 0 and Ethernet 0 are both up/up, which
is what is expected. The term “manual” means that you manually configured the
interface since the last reboot. The two B channels (BRI0:1 and BRI0:2) are down
because there are no active calls on the BRI interface at this time.
Tips
If you have trouble:
•
Make sure the correct ISDN switch type and SPIDs are configured.
•
Make sure your BRI line is connected to the correct port.
Step 5—Configuring Dial-on-Demand Routing
Set up the Dial-on-Demand Routing (DDR) routing components on the Cisco 1604. In most cases, a
remote site with a single LAN requires a simple DDR configuration, which supports the routing table
and call control in a circuit-switched environment.
In this case study, DDR takes the standard dialer map approach. You must configure specific parameters
to establish connectivity with the Cisco AS5300 by using sync PPP. Parameters include a static route,
username:password, and a dialer map.
To configure DDR, enter the following commands beginning in global configuration mode:
Step 1
Enter the configuration mode for the BRI interface.
robo-austin(config)# interface bri 0
Step 2
Define the interesting packets that activate the ISDN connection. Interesting packets reset the idle timer
and trigger dialing. This dialer filter is defined by the dialer-list 2 command. See Step 7.
robo-austin(config-if)# dialer-group 2
Step 3
Disable fair queuing.
robo-austin(config-if)# no fair-queue
Step 4
Disable the Cisco discovery protocol unless you are using it for a specific purpose.
robo-austin(config-if)# no cdp enable
Step 5
Configure the interface to bring up the second B channel when the bandwidth load exceeds 60/255.
robo-austin(config-if)# dialer load-threshold 60 either