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

Examples
# Configure T3 2/0 interface to operate in the FT3 mode, setting the DSU mode to 1 and the subrate to
3000 kbps.
<Sysname> system-view
[Sysname] controller t3 2/0
[Sysname-T3 2/0] using t3
[Sysname-T3 2/0] ft3 dsu-mode 1
[Sysname-T3 2/0] ft3 subrate 3000

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.
<Sysname> system-view
[Sysname] controller t3 2/0
[Sysname-T3 2/0] 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.
209