High-level Data Link Control
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OmniAccess 5740 Unified Services Gateway CLI Configuration Guide
Alcatel-Lucent
T
O CONFIGURE HDLC KEEPALIVE INTERVAL
Enter this command in the Interface Configuration mode. 
E
XAMPLE
The following example sets the keepalive interval to 12:
ALU(config-if Serial0/0:0)# hdlc keepalive 12
T
O ENABLE LOOPBACK DETECTION
EXAMPLE
ALU(config-if Serial0/0:0)# no hdlc down-when-looped
Command (in ICM) Description
hdlc keepalive <0-32767> This command configures the HDLC 
keepalive interval. The same value shall 
be configured on the peer.
A value of ‘0’ turns off the keepalive 
feature.
no hdlc keepalive  This command resets the keepalive 
interval to its default.
The default keepalive interval is 10 
seconds.
Command (in ICM) Description
hdlc down-when-looped This command is used to bring down the 
line protocol when loopback is detected 
on the interface.
no hdlc down-when-looped This command disables bringing down of 
the line protocol when loopback is 
detected on the interface. This is the 
default behavior.