Recognize An Under-Voltage Condition; Troubleshoot An Under-Voltage Condition; Buffer Tuning - Dell Force10 Z9000 Configuration Manual

Recognize an Under-Voltage Condition

If the system detects an under-voltage condition, it declares an alarm.
To recognize this condition, look for the system messages shown in the following example.
%CHMGR-1-CARD_SHUTDOWN: Major alarm: Line card 2 down - auto-shutdown due to under voltage
This message 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 route processor modules (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 simple network management protocol (SNMP) traps and object identifiers (OIDs) shown in the following table provide
information on environmental monitoring hardware and hardware components.
Table 63. SNMP Traps and OIDs
OID String
Receiving power
.1.3.6.1.4.1.6027.3.10.1.2.5.1.6
Transmitting power
.1.3.6.1.4.1.6027.3.10.1.2.5.1.8
Temperature
.1.3.6.1.4.1.6027.3.10.1.2.5.1.7
Hardware MIB Buffer Statistics
.1.3.6.1.4.1.6027.3.16.1.1.4
.1.3.6.1.4.1.6027.3.16.1.1.5
.1.3.6.1.4.1.6027.3.16.1.1.6

Buffer Tuning

Buffer tuning allows you to modify the way your switch allocates buffers from its available memory and helps prevent packet drops
during a temporary burst of traffic.
The application-specific integrated circuits (ASICs) implement the key functions of queuing, feature lookups, and forwarding lookups
in hardware.
OID Name
chSysPortXfpRecvPower
chSysPortXfpTxPower
chSysPortXfpRecvTemp
fpPacketBufferTable
fpStatsPerPortTable
fpStatsPerCOSTable
Description
OID to display the receiving power of the
connected optics.
OID to display the transmitting power of
the connected optics.
OID to display the Temperature of the
connected optics.
NOTE: These OIDs are only
generated if you enable the
enable optic-info-update-
interval command.
View the modular packet buffers details
per stack unit and the mode of allocation.
View the forwarding plane statistics
containing the packet buffer usage per
port per stack unit.
View the forwarding plane statistics
containing the packet buffer statistics per
COS per port.
Z-Series Debugging and Diagnostics
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