Troubleshooting The Backup Connection - HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual

Viewing Backup Configurations and Troubleshooting Backup Connections
the source address for the ping to a local network address). Before you send
the sample traffic, enable debugging for demand routing. From the enable
mode context, enter:
ProCurve# debug demand-routing
If you have configured your ACL correctly, debug messages for demand
routing should appear immediately. If no messages appear, you may have
configured the ACL incorrectly. Double-check the permit statement you con-
figured, and ensure that you applied the ACL to the demand interface. To check
this information, enter the show running-config command from the enable
mode context.
If you can troubleshoot the problem after business hours (when you will not
inadvertently interrupt the flow of traffic to other interfaces), you may want
to change the ACL to select all traffic from any source to any destination. The
ACL should then trigger the ISDN connection. You can then begin to narrow
the scope of the ACL to limit the traffic selected.

Troubleshooting the Backup Connection

If the interesting traffic triggers the backup connection, the ProCurve Secure
Router will find the appropriate connect-sequence command to process
(based on your configuration) and try to establish a connection. If the router
is unable to establish this connection, you will need to monitor the call setup.
The Secure Router OS provides a number of ISDN debug commands, which
you can use to troubleshoot ISDN backup connections. These commands are
listed in Table 3-15.
Table 3-15. debug Commands for ISDN
Command
debug isdn cc-ie
debug isdn cc-messages
debug isdn endpoint
debug isdn events
debug isdn group
debug isdn interface
debug isdn l2-formatted
debug isdn l2-messages
Configuring Backup WAN Connections
Description
displays information about the ISDN call control
displays call control messages
displays events related to ISDN endpoints
displays information about ISDN events
display errors and messages related to ISDN groups
displays ISDN interface events
displays Layer 2 formatted messages
displays Layer 2 message
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