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2 - External Loopback
This option is available for the following link types: V.35, RS232, RS530, V.11, and ATL CSU/DSU. This option is not
shown if the link is an ISDN BRI or LXT 411 CSU/DSU.
Enabling this option causes a test pattern to be generated and transmitted by this link module. This external loopback
test requires that somewhere along the WAN link connection, there is a loopback to send the test pattern back to the
bridge/router. The loopback may be a hardware loopback or an internal loopback on a remote modem.
LINK 1 - EXTERNAL LOOPBACK
Link Interface Type:
Sample Description :
Total Frames Xmt
Total Frames Rcv
Good
Frames Rcv
Error Frames Rcv
Xmt Failures
Type: [s] - redraw, [c]lear, [=] main menu, any other key to end.
Total Frames Xmt:
Total Frames Rcv:
Good Frames Rcv:
Error Frames Rcv:
Xmt Failures:
Menus Reference Manual: WAN Loopback Menu
RS530
256 Byte Frame
:
513
:
513
:
253
:
:
The total number of frames transmitted by the link module.
The total number of frames received by the link module.
The total number of good frames received by the link module. A good frame is
a frame with a correct CRC, is correctly aligned, etc.
The total number of error frames received by the link module. An error frame is
a frame with a bad CRC, unaligned, contains an abort sequence, etc.
The number of times the bridge/router attempted to transmit a test frame and
failed. This is due to the absence of a transmit link clock signal. This will
indicate that the connection to the link module is faulty.
0
0
263
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