Buffer Tuning - Dell PowerEdge M IO Aggregator Command Reference Manual

The simple network management protocol (SNMP) traps and OIDs in
about environmental monitoring hardware and hardware components.
Table 22-3. 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 circuit
(ASICs) implement the key functions of queuing, feature lookups, and forwarding lookups in the
hardware.
• Forwarding processor (FP) ASICs provide Ethernet MAC functions, queueing and buffering, as well
as store feature and forwarding tables for hardware-based lookup and forwarding decisions. 10G and
40G interfaces use different FPs.
You can tune buffers at three locations
1. CSF – Output queues going from the CSF.
2. FP Uplink—Output queues going from the FP to the CSF IDP links.
3. Front-End Link—Output queues going from the FP to the front-end PHY.
OID Name
chSysPortXfpRecvPower
chSysPortXfpTxPower
chSysPortXfpRecvTemp
fpPacketBufferTable
fpStatsPerPortTable
fpStatsPerCOSTable
(Figure 22-9).
Table 22-3 provide information
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 CLI enable optic-info-update-interval is enabled
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.
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