8101 Datasheet, PDF (67/172 Pages) LSI Computer Systems – Gigabit Ethernet Controller

Table 2.14 Counter Definition
Counter Description
Counter Counter Name
Number (MIB Object Name)
RX/TX Definition
Size
(Bits)
Register
Address
REGAD[7:0]
(Low/High)
RMON Statistics Group MIB (RFC 1757)
1
etherStatsDropEvents
Packets with receive FIFO overflow
0b10000000
RX
error.
32
0b10000001
2
etherStatsOctets
Bytes, exclusive of preamble, in good
or bad packets. Bytes in packets
RX
with bad SFD are excluded.¹
0b10000010
32
0b10000011
3
etherStatsPkts
RX
All packets, good or bad.¹
0b10000100
32
0b10000101
4
etherStatsBroadcastPkts
RX
Broadcast packets, good only.¹
0b10000110
32
0b10000111
5
etherStatsMulticastPkts
RX
Multicast packets, good only.¹
0b10001000
32
0b10001001
6
etherStatsCRCAlignErrors
Packets of legal-length with CRC error
or alignment error.
There are no alignment errors in 8B10B
Gigabit Ethernet, so this counter will
only count CRC errors for legal length
0b10001010
RX
packets.
32
0b10001011
7
etherStatsUndersizePkts
Packets of length < 64 bytes with no
0b10001100
RX
other errors.
32
0b10001101
8
etherStatsOversizePkts
Packets of length > Max_Packet_Length
0b10001110
RX
with no other errors.
32
0b10001111
9
etherStatsFragments
Packets of length < 64 bytes with CRC
error or alignment error.
There are no alignment errors in 8B10B
Gigabit Ethernet, so this counter will
0b10010000
RX
only count CRC errors with length < 64. 32
0b10010001
10
etherStatsJabber
Packets of length > Max_Packet_Length
with CRC error or alignment error.
There is no jabber function in Gigabit
0b10010010
RX
Ethernet, so this counter is undefined. 32
0b10010011
Counters
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