Reference Guide

Z-Series Debugging and Diagnostics | 295
Recognize an under-voltage condition
If the system detects an under-voltage condition and declares an alarm. To recognize this condition, look
for the system messages in Message 3.
This message in Message 3 indicates that the specified card is not receiving enough power. In response, the
system first shuts down Power over Ethernet (PoE). If the under-voltage condition persists, line cards are
shut down, then RPMs.
Troubleshoot an under-voltage condition
To troubleshoot an under-voltage condition, check that the correct number of power supplies are installed
and their Status LEDs are lit.
The SNMP traps and OIDs in Table 12-4 provide information on S-Series environmental monitoring
hardware and hardware components.
Message 3 Under-voltage Condition System Messages
%CHMGR-1-CARD_SHUTDOWN: Major alarm: Line card 2 down - auto-shutdown due to under voltage
Table 12-4. SNMP Traps and OIDs
OID String OID Name Description
Receiving power
.1.3.6.1.4.1.6027.3.10.1.2.5.1.6 chSysPortXfpRecvPower OID to display the receiving power of the connected
optics.
Transmitting power
.1.3.6.1.4.1.6027.3.10.1.2.5.1.8 chSysPortXfpTxPower OID to display the transmitting power of the
connected optics.
Temperature
.1.3.6.1.4.1.6027.3.10.1.2.5.1.7 chSysPortXfpRecvTemp OID to display the Temperature of the connected
optics.
Note: These OIDs will only be generated if the CLI
command enable optic-info-update-interval is
enabled.
Hardware MIB Buffer Statistics
.1.3.6.1.4.1.6027.3.16.1.1.4 fpPacketBufferTable View the modular packet buffers details per stack
unit and the mode of allocation.
.1.3.6.1.4.1.6027.3.16.1.1.5 fpStatsPerPortTable View the forwarding plane statistics containing the
packet buffer usage per port per stack unit.
.1.3.6.1.4.1.6027.3.16.1.1.6 fpStatsPerCOSTable View the forwarding plane statistics containing the
packet buffer statistics per COS per port.