HP ProCurve 7000dl Series Basic Management And Configuration Manual page 474

Configuring Demand Routing for Primary ISDN Modules
Using Demand Routing for ISDN Connections
8-36
Processing connect-sequences
1. Check connect-order.
connect-order sequential
3. Check connect-mode. Can the
interface answer or originate a call?
connect-mode either
5. Was the call for connect-sequence
20 successful?
Yes = PPP session begins
No = process connect-sequence 10
up to three times or until a call is
successful
7. If the demand interface
cannot successfully establish
a call, the router puts it into the
recovery state.
Figure 8-11. Trying to Establish an ISDN Connection
If the ISDN connection is not established, the ProCurve Secure Router will try
to process connect sequence 20. Because the busyout-threshold setting is
1, the ProCurve Secure Router will try this connection only once. If the second
connect sequence is unsuccessful, the ProCurve Secure Router will try
connect sequence 10 up to two more times (for a total of three times).
2. Process connect-sequence 2,
based on connect-order.
connect-sequence 10 dial-string 5551212
forced-ISDN-64k busyout-threshold 3
connect-sequence 20 dial-string 5552222
forced-ISDN-64k busyout-threshold 1
4. Was the call successful?
Yes = PPP session begins
No = process connect-sequence 20
6. Based on connect-
sequence attempts command,
repeat steps 2 through 5 until
a call is successful or a
maximum of two more times.
connect-sequence attempts 3
8. In the recovery state, the demand
interface attempts to establish a
connection every 60 seconds.
Based on the configuration, it tries
a maximum of five times. If the
interface is not successful, its
status changes to down.
connect-sequence interface-recovery
retry-interval 60 max-retries 5