Allied Telesis AT-S70 - Manual (Page 101)

AT-S70 Management Software User’s Guide
101
Loopback State
Indicates the current loopback status of the link. This status is
determined by a combination of the local parser and the multiplexer
states, as well as by the actions of the local OAM Client.
ˆ None – No loopback initiated. (default)
ˆ Initiating Loopback – The remote loopback has been initiated. The
local MAC Client stops sending data frames to the remote station
and the local OAM Client sets its action parameter to DISCARD.
The local OAM Client sends a Loopback Control OAMPDUs with a
non-zero loopback time.
ˆ Remote Loopback – This remote loopback allows the users to test
the link of the remote equipment. From the remote equipment,
every data frame received is transmitted back on that same port
except for the OAMPDUs and pause frames.
The loopback command is acknowledged by responding with an
information OAMPDU with the loopback state indicated in the state
field. OAMPDUs continue to be exchanged during loopback mode,
only data frames are looped back.
ˆ Terminating Loopback – When the local station wishes to end the
OAM loopback test, the local MAC Client stops sending frames.
The local OAM Client then sends a Loopback Control OAMPDU
with a zero loopback timer.
ˆ Local Loopback – This local loopback allows the users to test the
link though an internal loop in the local equipment without
physically connecting the transmit port to the receive port. In local
loopback, data frames are transmitted as normal through the
transmit side of the chassis. Data frames received are replaced
with the data frames being transmitted.
In Loopback Test
Indicates that the selected port is currently running loopback test.
ˆ Yes – Loopback test is currently running on the selected port.
ˆ No – Loopback test is not running on the selected port. (default)
8. Press or select the “Return to ...” option at the bottom of the
menu, to save the settings and return to the previous menu.