Comtech EF Data CDM-760, Installation And Operation Manual

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Ethernet Interface Operation Revision 4
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
7–57
Ethernet Statistics
Receive/Transmit Statistics
Statistics Type
Description
Total Packets
Received
Unicast Packets
This is the sum for this port of all valid packets received/transmitted as
either Unicast Packets, Broadcast Packets, Multicast Packets or
Ethernet Pause frames.
Broadcast Packets
Multicast Packets
Ethernet Pause Frames
Bytes Received
This is the sum for this port total of all valid bytes received/transmitted
as either Unicast Packets, Broadcast Packets, Multicast Packets or
Ethernet Pause frames.
Total Receive Errors
This is the sum total for this port of all packets received/transmitted in
error as either LAN FCS Errors, Alignment Errors, Undersize,
Fragments, Jabber, Oversize or InDiscard.
Receive/Transmit Performance
Statistics Type
Description
Current Data Rate (kbps)
This is the average for this port of data rate received/transmitted
during the last 1 second.
Avg Data Rate (kbps – 5 minutes)
This is the average for this port of data rate received/transmitted on
this port over the last 5 minutes.
Max Data Rate (since last clear)
This is the maximum received/transmitted data rate this port has
seen since the last time the statistics buffer was cleared.
Current Packets/s
This is the total number of packets received/transmitted on this port
during the last 1 second.
Average Packets/s (5 minutes)
This is the average number of packets received/transmitted per
second on this port over the past 5 minutes.
Max Packets/s (since last clear)
This is the maximum received/transmitted packets per second this
port has seen since the last time the statistics buffer was cleared.
Error Details
All packets received in error are discarded.
Receive Errors
Statistics Type
Description
LAN FCS Error
Indicates a packet was received on his port with an invalid FCS
(sometimes referred to as checksum).
Alignment Error
Indicates a packet was received on this port with an invalid FCS or
was received on a non byte (8 bit) boundary.
Undersize
Indicates that a packet as seen by this port is fewer than 64 octets
long (including FCS octets) but otherwise well formed.
Fragments
Indicates a portion of the packet as seen by this port was received
but one or more sections of the packet are missing.
Jabber
Indicates a device on the network as seen by this port is improperly
handling the Ethernet signaling.
Oversize
Indicates that a packet as seen by this port is larger than 10,240
octets long (including FCS octets) but otherwise well formed.
InDiscards
Indicates that a packet as received by this port that was forwarded
incorrectly or were supposed to be handled in a special manner, but
were not.