Loopback (Ct3 Interface); Mdl (Ct3 Interface) - HP 6600 Command Reference Manual

Examples
# Set the physical link state change suppression interval of interface T3 2/0/0 to 8 seconds.
<Sysname> system-view
[Sysname] controller t3 2/0/0
[Sysname-T3 2/0/0] link-delay 8

loopback (CT3 interface)

Use loopback to configure the loopback mode for a CT3 interface.
Use undo loopback to disable loopback.
Syntax
loopback { local | payload | remote }
undo loopback
Default
Loopback is disabled on CT3 interfaces.
Views
CT3 interface view
Default command level
2: System level
Parameters
local: Enables internal loopback on the CT3 interface.
payload: Enables external payload loopback on the CT3 interface.
remote: Enables external loopback on the CT3 interface.
Usage guidelines
Loopback is intended for test use. Disable loopback in other cases.
If a CT3 interface encapsulated with PPP is placed in a loopback, it is normal that the state of the link
layer protocol is reported as down.
Examples
# Enable internal loopback on interface T3 2/0/0.
<Sysname> system-view
[Sysname] controller t3 2/0/0
[Sysname-T3 2/0/0] loopback local

mdl (CT3 interface)

Use mdl to configure MDL message detection/sending on the CT3 interface.
Use undo mdl to remove the MDL settings.
Use undo mdl detect to disable the CT3 interface from detecting MDL messages.
Use undo mdl generate to disable the CT3 interface from sending MDL messages.
Use undo mdl data to restore the default.
174