12-16
Stinger®
Administration Guide
Diagnostic Testing
OAM testing
The
oam-timeout-trap-enabled
parameter in the
trap
profile enables and disables an
OAM timeout trap and the
error-threshold
parameter. To enable the trap, specify
yes
. To disable the trap (the default), specify
no
.
Using the
oamloop
command
The
oamloop
command sends ATM OAM loopback cells on an ATM interface, to
obtain information about the results of the looped cells.
Note
Running several prolonged concurrent OAM test sessions using the
oamloop
command sometimes causes inaccurate test results. To prevent this situation, Lucent
Technologies strongly recommends that you conduct only one OAM test session at a
time using this software version. If you must conduct simultaneous OAM test
sessions, limit them to no more than eight. Additionally, avoid running the test
unnecessarily for prolonged periods.
You enter the
oamloop
command with options to specify the type of cells to transmit,
the shelf number (always 1), the slot where the trunk module is located, and the
virtual path identifier (VPI) and virtual channel identifier (VCI) on which to send the
cells. You can optionally specify the number of cells and the transmission interval.
For details about
oamloop
syntax, see the
Stinger Reference
.
For example, the following command sends 10 end-to-end loopback cells to a trunk
module in slot 2 on VPI 1, VCI 32:
admin>
oamloop -c 10 -e 1 2 1 32
Received our End2End OAM loopback cell, Id=9
Received our End2End OAM loopback cell, Id=10
Received our End2End OAM loopback cell, Id=11
Received our End2End OAM loopback cell, Id=12
Received our End2End OAM loopback cell, Id=13
Received our End2End OAM loopback cell, Id=14
Received our End2End OAM loopback cell, Id=15
Received our End2End OAM loopback cell, Id=16
Received our End2End OAM loopback cell, Id=17
Received our End2End OAM loopback cell, Id=18
--- OAM loop statistics ---
10 cells transmitted, 10 cells received, 0% cell loss
Configuring loopback on OC3, E3, and DS3 interfaces
To run a loopback test on the interface of an OC3-ATM, E3-ATM, or DS3-ATM trunk
module, set the
loopback
parameter in the
line-config
subprofile of the
oc3-atm
,
ds3-atm
, or
e3-atm
profile. While the interface is looped back, normal data traffic is
interrupted.
Specify one of the following values for the
loopback
parameter:
no-loopback
(the default)—The line is operating normally and is not running
loopback testing.
facility-loopback
—This line is put in loopback mode, and the trunk module
returns the signal it receives on its line.
local-loopback
—This line is put in loopback mode, and the trunk receive path is
connected to the transmit path at the multiplexer. The transmitted signal is still
sent to the network as well.
Summary of Contents for Stinger
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