3com S330 ユーザーズマニュアル

C

HAPTER

 5: P

ATH

B

UILDER

 S330 D

IAGNOSTICS

 

AND

 P

ERFORMANCE

 S

TATISTICS

Figure 137   OC3/STM-1 Loopback Menu

4 Select [1] Set Loopback. A prompt listing the loopback choices for the selected 

port appears at the bottom of the screen.

5 Enter the number corresponding to the type of loopback you want to configure.

The following subsections describe the available loopbacks for each of the 
PathBuilder S330 interfaces.

The following loopbacks are available for the T1/E1 UNI interface:

Network Line—Loops the T1/E1 received data back on the output side after the 
digital data has been recovered.

Local Card—Loops the transmit T1/E1 output on the receive side; the transmitted 
data will continue to go on the output.

Network Card—Loops the T1/E1 received payload back toward the line output.

illustrates the loopbacks for T1/E1.

Figure 138   T1/E1 Loopbacks