Fe1 Loopback - HP 6600 Command Reference Manual

Parameters
number number: Sets the number of interframe filling tags (an interframe filling tag is one byte in length).
The number argument ranges from 0 to 14.
type { 7e | ff }: Sets the type of interframe filling tag to 0x7E by specifying the 7e keyword or to 0xFF by
specifying the ff keyword. The default is 0x7E.
Usage guidelines
Interframe filling tags are sent when no service data is sent on the timeslots bundled into the logical
channel on the E1-F interface.
Examples
# Set the type of interframe filling tag to 0xFF on E1-F interface Serial 2/0/0.
<Sysname> system-view
[Sysname] interface serial 2/0/0
[Sysname-Serial2/0/0] fe1 itf type ff
# Set the number of interframe filling tags to five on E1-F interface Serial 2/0/0.
<Sysname> system-view
[Sysname] interface serial 2/0/0
[Sysname-Serial2/0/0] fe1 itf number 5

fe1 loopback

Use fe1 loopback to set the E1-F interface in a loopback mode.
Use undo fe1 loopback to restore the default.
Syntax
fe1 loopback { local | payload | remote }
undo fe1 loopback
Default
Loopback is disabled.
Views
E1-F interface view
Default command level
2: System level
Parameters
local: Sets the interface in internal loopback mode.
payload: Sets the interface in external payload loopback mode.
remote: Sets the interface in external loopback mode.
Usage guidelines
Loopback is mainly used to check the condition of interfaces or cables. Disable loopback in other cases.
The three loopback modes cannot be used at the same time on an E1-F interface.
128