Alcatel-Lucent 1830 PSS-16 Maintenance And Trouble-Clearing User Manual page 664

Supporting procedures
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Performing loopbacks
Overview
Performing loopbacks is service affecting. You must take the card out of service before
performing a loopback test.
None
For information and illustrations of loopbacks refer to the Alcatel-Lucent Product
Information and Planning Guide.
The 11STAR1, 11STMM10, 11STGE12, 43STA1P, 43STX4, 43STX4P and 4DPA4 packs
support the following loopbacks:
• client port line/facility loopback
• client port terminal loopback
• network port line/facility loopback
• network port terminal loopback
Note: Loopbacks may experience packet loss during a warm or cold reset of the card.
It can take several minutes for transmission to be established on 40G OTs after
removing loopbacks.
To create a loopback on a card using the CLI, refer to the Alcatel-Lucent CLI
Command Guide.
Facility/line Loopback on an OTU2 port entity of an OT card will not be transparent
to OTU2 and ODU2 overhead.
While facility/line loopback on an Fiber Channel port of 11STMM10 module is
active, a non-reported LANLSS condition will be present on the port. PM on port with
the loopback will accumulate SEFS during the time loopback is active.
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NOTICE
Service-disruption hazard
Overview
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011