Motorola AP-7131 Series, Reference Manual

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13 - 78 WiNG 5.5 Access Point System Reference Guide
The Receive Errors table displays the following:
The Transmit Errors field displays the following:
13.3.11.2 Network Graph
Interfaces
The Network Graph displays statistics the access point continuously collects for its interfaces. Even when the interface
statistics graph is closed, data is still collected. Display the interface statistics graph periodically for assessing the latest
interface information. Up to three different stats can be selected and displayed within the graph.
Rx Frame Errors Displays the number of frame errors received at the interface. A frame error occurs when
data is received, but not in an expected format.
Rx Length Errors Displays the number of length errors received at the interface. Length errors are
generated when the received frame length was either less or over the Ethernet standard.
Rx FIFO Errors Displays the number of FIFO errors received at the interface. First-in First-out queueing is
an algorithm that involves buffering and forwarding of packets in the order of arrival. FIFO
entails no priority. There is only one queue, and all packets are treated equally. An
increase in FIFO errors indicates a probable hardware malfunction.
Rx Missed Errors Displays the number of missed packets. Packets are missed when the hardware received
FIFO has insufficient space to store an incoming packet.
Rx Over Errors Displays the number of overflow errors received. Overflows occur when a packet size
exceeds the allocated buffer size.
Tx Errors Displays the number of packets with errors transmitted on the interface.
Tx Dropped Displays the number of transmitted packets dropped from the interface.
Tx Aborted Errors Displays the number of packets aborted on the interface because a clear-to-send request
was not detected.
Tx Carrier Errors Displays the number of carrier errors on the interface. This generally indicates bad
Ethernet hardware or bad cabling.
Tx FIFO Errors Displays the number of FIFO errors transmitted at the interface. First-in First-Out (FIFO)
queueing is an algorithm that involves the buffering and forwarding of packets in the order
of arrival. FIFO uses no priority. There is only one queue, and all packets are treated
equally. An increase in the number of FIFO errors indicates a probable hardware
malfunction.
Tx Heartbeat Errors Displays the number of heartbeat errors. This generally indicates a software crash, or
packets stuck in an endless loop.
Tx Window Errors Displays the number of window errors transmitted. TCP uses a sliding window flow
control protocol. In each TCP segment, the receiver specifies the amount of additional
received data (in bytes) the receiver is willing to buffer for the connection. The sending
host can send only up to that amount. If the sending host transmits more data before
receiving an acknowledgment, it constitutes a window error.
Refresh Select Refresh to update the statistics counters to their latest value.