NEC SOPHO IP 5000 Command Reference Manual page 158

national-bit
using
Command Reference Guide
remote: Enables the CE3 interface to perform remote loopback. Data does not
go through the framer in this case and will be looped back before the payload
has been generated.
Description
Using the loopback command, you can configure the loopback mode of a CE3
interface. Using the undo loopback command, you can disable the CE3
interface to perform loopback.
By default, loopback is disabled on the CE3 interface.
It is necessary for you to enable the CE3 interface to perform loopback only for
the purpose of testing some special functions.
If a CE3 interface encapsulated with PPP has been set to perform loopback, it
is normal for the state of the link layer protocol to be reported as DOWN.
Example
Enable the interface E3 1/0/0 to perform local loopback.
[NEC-PHILIPS-E3 1/0/0] loopback local
Syntax
national-bit { 0 | 1 }
undo national-bit
View
CE3 interface view
Parameter
0: Sets the national bit of the CE3 interface to 0.
1: Sets the national bit of the CE3 interface to 1.
Description
Using the national-bit command, you can configure national bit for a CE3
interface. Using the undo national-bit command, you can restore the default
setting.
The national bit of CE3 interface defaults to 1.
It is necessary to set the national bit of an E3 interface to 0 only in some special
circumstances.
For the related command, see controller e3.
Example
Set the national bit of the interface E3 1/0/0 to 0.
[NEC-PHILIPS-E3 1/0/0] national-bit 0
Syntax
using { e3 | ce3 }
undo using
View
CE3 interface view
SOPHO
IP 5000/SOPHO IP6000
158