Configuring Ppp Callback; Configuration Guidelines; Configuring Ppp Callback In The C-Dcc Implementation - HPE FlexNetwork MSR Series Comware 5 Layer 2 - Wan Access Configuration Manual

Step
Set the upper limit of links in
6.
an MP bundle.
Set the lower limit of links in
7.
an MP bundle.

Configuring PPP callback

PPP callback adopts the client/server model where the calling party is the callback client and the
called party is the callback server. The client first originates a call, and the server decides whether to
originate a return call. If a return call is needed, the callback server disconnects and then originates
a return call according to the information such as username or callback number.
The following approaches are available to configure PPP callback with DCC:
Configuring a PPP callback client in the C-DCC implementation
•
Configuring PPP callback with RS-DCC
•

Configuration guidelines

•
Configure PPP callback after completing the basic configuration of C-DCC or RS-DCC.
•
PPP callback implementation requires authentication. Hewlett Packard Enterprise
recommends that you configure PAP or CHAP authentication on both physical and dialer
interfaces on both callback client and server.
•
With dynamic route backup configured on an interface, only the dynamic route backup groups
are used for dial. The interface does not accept incoming calls or outgoing calls. Therefore, do
not configure dynamic route backup groups for interfaces with callback configured.

Configuring PPP callback in the C-DCC implementation

You can configure the router as a PPP callback client or server with C-DCC.
Configuration guidelines
•
If the network address used by a callback client is dynamically assigned, the server cannot use
the dialer route command to associate the callback dial string with the network address for the
client. Use the authorization-attribute callback-number command instead to associate the
dial string with the client username for callback.
•
To leave enough time for a server to call back, set the interval for DCC to make the next call
attempt on the client at least 10 seconds longer than that of the server. Hewlett Packard
Enterprise recommends that you set the interval on the server to 5 seconds (the default) and
that on the client to 15 seconds.
Configuring a 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.
To configure PPP callback client in the C-DCC implementation:
Step
Enter system view.
1.
Command
ppp mp max-bind max-bind-num
ppp mp min-bind min-bind-num
Command
system-view
139
Remarks
Optional.
The default setting is 16.
Optional.
By default, the lower limit is 0, and
DCC brings up links depending on
traffic size.
Remarks
N/A