6F8C0904 173
7.5 RAS Information Readout
7
(5) RAS information details
(a) RAS counters and LAN controller (line) information
Reads out 128 words of data using RAS information readout.
(b) MIB_IF ••• LAN controller interface information
Reads out 13 words of data using RAS information readout.
Packet:A unit of data flowing on the transmission path (see Figure 7-1).
Table 7-2 RAS Counters
Symbol Description
RAS_CNT [0] Normal reception count
RAS_CNT [1] Bus read error (reception buffer read failure) count
RAS_CNT [2] Remote reset packet reception count
(Packets whose Ethernet header type was set to 0900H.)
RAS_CNT [3] Short packet (packet length under 60 bytes) receptions count
RAS_CNT [4] Alignment error (The number of bits in the received data was not divisible by
8) count
RAS_CNT [5] CRC error (received packet CRC check error) count
RAS_CNT [6] Overflow (incoming packets discarded due to full receive buffer) count
RAS_CNT [7] Normal transmission count
RAS_CNT [8] 16 collisions occurred
•
•
•
The following counters are reserved.
•
•
RAS_CNT [127] •
Table 7-3 MIB_IF
Symbol Description
MIB_IF [0] Interface number available to this system
MIB_IF [1] Reserved
MIB_IF [2] Interface type of the protocol under the IP layer
MIB_IF [3] Time elapsed after the interface state changes
MIB_IF [4] Total number of packets received by the interface
MIB_IF [5] Number of non-broadcast/non-multicast packets routed to higher level
protocol
MIB_IF [6] Number of broadcast/multicast packets routed to higher level protocol
MIB_IF [7] Number of packets discarded due to resource limitations
MIB_IF [8] Number of packets discarded due to format errors
MIB_IF [9] Number of packets sent to an undefined protocol
MIB_IF [10] Total number of octets transmitted by the interface
MIB_IF [11] Number of non-broadcast/non-multicast packets from upstream
MIB_IF [12] Number of broadcast/multicast packets from upstream
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