3Com 3032 Configuration Manual page 146

142 C 10: C
HAPTER ONFIGURING
Display and Debug E1-F
Interface
WAN I
NTERFACE
Table 153 Set frame format for an E1-F interface
Operation
Set frame format for an E1-F interface
Restore the default frame format of the E1-F
interface
By default, the frame format of E1-F interface is no-CRC4.
7 Enable or Disable Local Loopback/Remote Loopback
An interface should be place in local loopback or remote loopback for some
special functionality tests.
Perform the following configuration in E1-F interface view.
Table 154 Enable/Disable local/remote loopback on an E1-F interface
Operation
Enable local/remote loopback on an interface
Disable local/remote loopback on an interface
By default, no E1-F interface is placed in local or remote loopback.
On an interface, using this command but with different arguments can
respectively enable local loopback and remote loopback, but these two functions
cannot be enabled at the same time.
Perform the
display
and other related information.
Table 155 Display and debug E1-F interface
Operation
Display configuration and state of E1-F interface
Display the operating state of E1-F interface
Command
fe1 loopback { local | remote }
undo fe1 loopback [ local |
remote ]
command in all views to display the state of E1-F interface
Command
fe1 frame-format { crc4 |
no-crc4 }
undo fe1 frame-format
Command
display fe1 [ serial
serial-number ]
display serial serial-number