Configuration Procedure; Configuring Dynamic Route Backup Achieved Through Dcc; Introduction To Dynamic Route Backup - HPE FlexNetwork MSR Series Comware 5 Layer 2 - Wan Access Configuration Manual

timer for the link. When the idle time of the link reaches the setting of this compete-idle timer,
the link disconnects.
•
Wait-carrier timer—Sometimes, the time DCC waits for a connection to be established varies
call by call. To handle this situation, use a wait-carrier timer. A wait-carrier timer starts when a
call is placed. If the connection is not established upon expiration of the timer, DCC terminates
the call.
•
Buffer queue length—If no connection is available when a dialup interface without a buffer
queue receives a packet, it will drop the packet. Configured with a buffer queue, the dialup
interface will buffer the packet until a connection is available for packet sending.

Configuration procedure

To configure DCC timers and buffer queue length on a dialup interface:
Step
Enter system view.
1.
Enter dialup interface
2.
(physical or dialer interface)
view.
Set the link idle-timeout
3.
timer.
Set the holddown timer.
4.
Set the compete-idle timer.
5.
Set the wait-carrier timer.
6.
Set the buffer queue length.
7.
Set the intended bandwidth.
8.
Configuring dynamic route backup achieved
through DCC
The dynamic route backup function is available to the following dialup interfaces: dialer interfaces,
PRI interfaces, BRI interfaces, serial interfaces operating in the asynchronous mode, AM interfaces,
AUX interfaces, and Async interfaces.

Introduction to dynamic route backup

The dynamic route backup function employs DCC to dynamically maintain dialup links. It can provide
backup for dialup links based on routes.
The dynamic route backup function combines the backup function and the routing function. It
provides reliable connections and standard dial-on-demand services.
Dynamic route backup features
1.
Command
system-view
interface interface-type
interface-number
dialer timer idle seconds
dialer timer enable seconds
dialer timer compete seconds
dialer timer wait-carrier
seconds
dialer queue-length packets
bandwidth bandwidth-value
147
Remarks
N/A
N/A
Optional.
The default setting is 120
seconds.
Optional.
The default setting is 5 seconds.
Optional.
The default setting is 20 seconds.
Optional.
The default setting is 60 seconds.
Optional.
By default, packets are not
buffered.
Optional.