Squelched - Cisco NCS 2000 series Troubleshooting Manual

SQUELCHED

SQUELCHED
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
Logical Objects: 2R, ESCON, FC, GE, ISC, OCN/STMN, TRUNK
The Client Signal Squelched condition is raised by a TXP_MR_10G, TXP_MR_10E, TXP_MR_10E_C,
TXP_MR_10E_L, TXP_MR_2.5G, TXPP_MR_2.5G, MXP_2.5G_10G, MXP_2.5G_10E, MXP_2.5G_10E_C,
MXP_2.5G_10E_L, MXP_MR_2.5G, MXPP_MR_2.5G, GE-XP, 10GE-XP, AR_MXP, AR_XP, AR_XPE,
ADM-10G, and OTU2_XP card.
The condition can be raised in the following situations:
• An MXP or TXP client facility detects that an upstream receive facility has experienced a loss of signal
• The client will squelch if the upstream trunk receive (on the same card) experiences a SIGLOSS, Ethernet
• The client will squelch if the upstream client receive (on the card at the other end of the DWDM span)
In an example situation, an upstream MXP_2.5G_10G client port receive experiences a loss of light, and this
port raises CARLOSS, SIGLOSS, or LOS (determined by the payload type) locally.
The local client raises SQUELCHED if it also raises one of the following alarms for the client, all of which
are signalled by the upstream node:
•
•
•
•
On the MXP_MR_10G, the local client raises a SQUELCHED condition if the upstream client detects one
of the following alarms. Note that no corresponding local alarm is raised to indicate which of these conditions
is present upstream.
• LOS for the clients including the
• CARLOSS for the clients including the
The local client raises a SQUELCHED condition if the local trunk raises one of the following alarms:
•
•
•
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
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(such as an Ethernet CARLOSS, DWDM SIGLOSS, or optical LOS). In response, the facility transmit
is turned off (SQUELCHED). The upstream receive facilities are the trunk receive on the same card as
the client, as well as the client receive on the card at the other end of the trunk span.
CARLOSS, LOS, or LOS (TRUNK) alarm. In some transparent modes, the client is squelched if the
trunk detects an AIS condition or a TIM alarm.
experiences CARLOSS, SIGLOSS, or LOS.
ODUK-1-AIS-PM , on page 314
ODUK-2-AIS-PM , on page 315
ODUK-3-AIS-PM , on page 315
ODUK-4-AIS-PM , on page 316
and the LOS (ISC), on page 276
page 149 alarm, and the CARLOSS (ISC) , on page 150
OTUK-LOF , on page 343
OTUK-AIS , on page 340
LOS (TRUNK) , on page 278
LOS (2R), on page 272 alarm, the
alarm
CARLOSS (FC) , on page 149
alarm
Alarm Troubleshooting
LOS (ESCON), on page 274
alarm, the CARLOSS (GE) , on
alarm,