Achronix Speedster22i 10G/40G/100G Ethernet - Manual (Page 105)

UG029, September 6, 2013 105
Transmit Statistics Vector
The Channelized MAC Core provides a Transmit Statistics Vector per segment that support
the statistics counters as described in the table below.
Table 67 – TX Statistics Vector - IEEE 802.3 oMacEntity and oPauseEntity
Managed Objects
Object Description
aAlignmentErrors Frame received with an alignment error.
aMACControlFramesReceived Valid control frame received.
aPAUSEMACCtrlFramesReceived Valid pause frame received.
aCBFCPAUSEFramesReceived_0
aCBFCPAUSEFramesReceived_1
…
aCBFCPAUSEFramesReceived_7
Set of 8 objects recording the number of CBFC
(Class Based Flow Control) pause frames received
for each class.
aFrameTooLongErrors
Frame received exceeded the maximum length
programmed in register FRM_LENGTH.
aInRangeLengthErrors
A count of frames with a length/type field value
between 46 (VLAN: 42) and less than 0x0600, that
does not match the number of payload data octets
received.
Should count also if length/type field is less than 46
(VLAN: 42) and the frame is longer than 64 bytes.
aFramesReceivedOK
Frame received without error (including pause
frames).
aFrameCheckSequenceErrors
CRC-32 Error is detected but the frame is otherwise
of correct length.
VLANReceivedOK VLAN frame received without error.
Table 68 – Transmit Statistics Vector - IETF MIB (MIB-II) Objects
Object Description
ifOutOctets
All octets transmitted except preamble (i.e. Header, Payload, Padding
and FCS) for all valid frames and valid pause frames transmitted.
ifOutErrors
Number of frames transmitted with error:
FIFO Overflow Error
FIFO Underflow Error
User application defined error (ff_tx_err asserted together with
ff_tx_eop)
ifOutUcastPkts
Incremented with each frame written to the FIFO interface and bit 0 of
the destination address set to '0'.
ifOutMulticastPkts Incremented with each frame written to the FIFO interface and bit 0 of