Connection; Viewing Information About Persistent Backup Connections; And Troubleshooting Problems - HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual

Configuring Backup WAN Connections
Viewing Backup Configurations and Troubleshooting Backup Connections
3-84
To hang up a specific channel, enter the number of the B channel you want
to disconnect. For example, if you wanted to hang up channel B2, you would
enter:
ProCurve(config-bri 2/3)# test-call hangup channel 2
Test calls allow you to check the physical ISDN connection, end to end,
between the calling router and the receiving router.
Troubleshooting PPP for a Demand Routing Backup Connection
Because PPP is the Data Link Layer for dial-up connections, you may need to
troubleshoot the negotiation of a PPP session or PPP authentication (if you
have configured authentication for the connections). Table 3-16 lists the
debug commands you can use to monitor PPP sessions.
Table 3-16. debug Commands for PPP Interfaces
Command
debug ppp verbose
debug ppp errors
debug ppp negotiation
debug ppp authentication
undebug all

Viewing Information about Persistent Backup Connections

and Troubleshooting Problems

When you are troubleshooting a persistent backup connection, you should
verify the following:
The backup dial list for the primary connection contains the remote
router's number.
Backup is enabled for the proper days and times.
The backup interface has an IP address on a different network from the
primary interface.
If using authentication, the backup interface includes the correct user-
name and password to send or to accept from a peer.
Explanation
displays detailed information about all PPP frames as
they arrive on the PPP interface
displays error messages relating to PPP
displays events relating to link negotiation; shows if
link protocols are able to open; reveals when
negotiations between two PPP peers fail
displays real-time messages relating to PAP and CHAP
turns off debug messages