HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual page 186

Configuring Backup WAN Connections
Quick Start
N o t e
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7. Create a backup PPP interface.
Syntax: interface ppp <backup interface number>
8. Assign the backup interface an IP address on a different network than the
primary interface.
Syntax: ip address <backup A.B.C.D> <subnet mask | /prefix length>
9. Activate the interface.
ProCurve(config-ppp 2)# no shutdown
10. Move to the logical interface for the primary connection.
Syntax: interface <interface ID>
For example:
ProCurve(config)# interface frame-relay 1.102
11. Add the remote site's telephone number to the backup call list.
Syntax: backup number <remote site's LDN> [digital-56k | digital-64k] [1 1 | 1 2]
ppp <backup interface number>
Use 1 1 for a single channel and 1 2 for a bonded channel. For example:
ProCurve(config-fr 1.102)# backup number 5552222 digital-64k 1 2 ppp 2
Bonding calls is a ProCurve proprietary technology, so you can only place a
bonded call to another ProCurve Secure Router.
12. Set the backup call mode.
Syntax: backup call-mode [originate | answer | answer-always | originate-
answer | originate-answer-always]
For example, the router connects to the remote site through a Frame
Relay network. The connection on one side might still be up when the
other goes down, so you set the call mode to originate-answer-always.
ProCurve(config-fr 1.102)# backup call-mode originate-answer-always
13. Disable backup for the days and times you do not want to provide backup.
Syntax: no backup schedule day <day>
Syntax: backup schedule disable-time <hh:mm:ss>
Syntax: backup schedule enable-time <hh:mm:ss>