HP MSR2000/3000/4000 Router Series Layer 2 - WAN Configuration Guide
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• Configuring multiple interfaces to receive calls from one or more remote ends
In the C-DDR implementation of DDR, the two dial parties can configure the PAP or CHAP authentication.
HP recommends that you configure authentication to ensure security of dialing IDs. For more information
about configuring authentication, see "Configuring PPP and MP."
When you configure authentication, follow these guidelines:
• If one party has configured authentication, the other party must do that as well.
• If DDR is enabled on physical interfaces, directly configure PAP or CHAP authentication on the
physical interfaces. If DDR is enabled on a dialer circular group, configure PAP or CHAP
authentication on the dialer interface corresponding to the dialer circular group.
Configuring an interface to place calls to one or more remote
ends
In Figure 36, an interface at the local end places calls to one or more remote ends (the components in
gray represent the routers irrelevant to the networking).
Figure 36 Network diagram
In this scenario, interface if0 places DDR calls to one or more remote interfaces (if1, if2, and if3). In the
one-interface case, you can configure a dial string with the dialer number or dialer route command. In
the more-interfaces case, you should configure dial strings and destination addresses by using the dialer
route command. Since calls are placed from a single interface, you can configure C-DDR by configuring
a dialer circular group, or you can configure C-DDR directly on the physical interface. In addition, you
can configure PAP or CHAP authentication if PPP encapsulation is enabled on the dialup interface.
To configure an interface to place calls to one or more remote ends directly on a physical interface:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter physical interface view.
interface interface-type
interface-number
N/A
3. Enable C-DDR.
dialer circular enable By default, C-DDR is disabled.
Local end
(single
interface)
Remote end A
(single/multiple
interfaces)
if0
if1
if2
if3
Remote end B
(single/multiple
interfaces)
Remote end C
(single/multiple
interfaces)