NET
NET (Link Down; Data Link Down)
The NET NR condition is raised when the EC (ES1 & ES2) and USRPNL (OAMP, VOIP,
E1 & E2) ports are administratively disabled. When these ports are administratively
enabled and no Ethernet link connectvity is established, these NR conditions would be
reported as MN alarms.
On a fiber span, the OSC mode should match on both ends. If the rates do not match,
LOS-O is raised on one end, and Data Link Down (see “LOS-O” (p. 2-167) is raised on
the
other end.
Severity Not reported or Minor
Service affecting? Yes
Applicability 11DPE12E, 11STAR1, A2325A, AHPHG, AHPLG, ALPHG,
AM2017B, AM2125A, AM2125B, AM2325B, ALPFGT, EC,
FAN, FLC, MT0C, USRPNL
Corrective Action
NOTICE
Service-disruption hazard
A cold reset, reseat, or replacement of a card is service impacting if the card is currently
carrying services. To determine if any services are currently carried over a card, perform
the procedure “Reseating a Card” (p. 3-19).
If
there are services currently carried over the card, it may be best to wait for a
maintenance window before resetting, replacing, or reseating the card.
At the end of each step wait to see if the fault clears. If not, continue with the next step.
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1
Trace the source of the NET condition to the associated card and port upstream. Verify
that the source is operationally up by checking the Admin state. If the Admin state is Up,
then toggle the administrative state from UP->DOWN->UP.
EMS Double-click the NE and then on the alarmed card's client receive port.
Trouble-clearing procedures NET (Link Down; Data Link Down)
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2-202
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
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