3Com MSR 50 Series, Руководство по настройке

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DCC Configuration 171
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Configure PPP callback after completing the basic configuration of C-DCC or
RS-DCC.
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PPP callback implementation requires authentication. You are recommended to
configure PAP or CHAP authentication on both physical and dialer interfaces on
both callback client and server.
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With dynamic route backup configured on an interface, only the dynamic route
backup groups are used for dial. In this case, the interface does not accept
incoming calls or outgoing calls. So, do not configure dynamic route backup
groups for interfaces with callback configured.
Two approaches are available to configuring PPP callback with DCC:
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“Configuring PPP callback in the C-DCC implementation” on page 171
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“Configuring PPP callback in the RS-DCC implementation” on page 173
Configuring PPP callback in the C-DCC implementation
Configuring PPP callback in C-DCC involves configuring PPP callback client and
server.
1
Configure PPP callback client in the C-DCC implementation
As a callback client, your router can place calls to the remote end (which can be a
router or Windows NT server with the PPP callback server function), and receive
return calls from the remote end.
Follow these steps to configure PPP callback client in the C-DCC implementation:
2
Configure PPP callback server in the C-DCC implementation
As a callback server, your router can place return calls according to network
addresses configured with the
dialer route command (PPP authentication must
be configured in this case), or according to dial strings configured with the
To do... Use the command... Remarks
Enter system view system-view --
Enter dialer interface view interface dialer
interface-number
--
Enable PPP encapsulation link-protocol ppp Required
Configure authentication
parameters See “Configuring PPP” on
page 367 for related
information.
Required
Enable PPP callback client ppp callback client Required
Disabled by default
Configure the dial string for a
Windows NT Server to call
back ppp callback ntstring
dial-number
Optional
Not configured by default.
Configure this command if a
Windows NT Server requires
PPP callback clients to send
callback numbers.
Set the interval between two
calls dialer timer enable seconds Optional
15 seconds is recommended.