Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 830)

818 Brocade Mobility RFS Controller System Reference Guide
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The Receive Errors table displays the following:
The Transmit Errors field displays the following:
Network Graph
Interfaces
The Network Graph tab displays statistics the controller or service platform 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.
To view a detailed graph for an interface, select an interface and drop it on to the graph. The graph
displays Port Statistics as the Y-axis and the Polling Interval as the X-axis. Use the Polling Interval
from-down menu to define the increment data is displayed on the graph.
To view the Interface Statistics graph:
1. Select the Statistics menu from the Web UI.
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 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.