85
Configuring System Information
EdgeSwitch
™
Administration Guide
Ubiquiti Networks, Inc.
Port Detailed Statistics Fields (Continued)
Field
Description
GVRP PDUs
The number of Generic Attribute Registration Protocol (GARP) VLAN Registration Protocol (GVRP)
PDUs transmitted or received by the interface.
GMRP PDUs
The number of GARP Multicast Registration Protocol (GMRP) PDUs transmitted or received by the
interface.
EAPOL Frames
The number of Extensible Authentication Protocol (EAP) over LAN (EAPOL) frames transmitted or
received by the interface for IEEE 802.1X port-based network access control.
Advanced - Transmit section:
Total Transmit Packets
Discarded
The sum of single collision frames discarded, multiple collision frames discarded, and excessive frames
discarded.
Single Collision Frames
A count of the number of successfully transmitted frames on a particular interface for which
transmission is inhibited by exactly one collision.
Multiple Collision Frames
A count of the number of successfully transmitted frames on a particular interface for which
transmission is inhibited by more than one collision.
Excessive Collision Frames
A count of frames for which transmission on a particular interface fails due to excessive collisions.
Underrun Errors
The total number of frames discarded because the transmit FIFO buffer became empty during frame
transmission.
GMRP Failed Registrations
The number of times attempted GMRP registrations could not be completed.
GVRP Failed Registrations
The number of times attempted GVRP registrations could not be completed.
Advanced - Receive section:
Total Packets Received Not
Forwarded
The number of inbound packets which were chosen to be discarded to prevent them from being
delivered to a higher-layer protocol, even though no errors had been detected. One possible reason
for discarding such a packet is to free up buffer space.
Total Packets Received With
MAC Errors
The total number of inbound packets that contained errors preventing them from being delivered to a
higher-layer protocol.
Overruns
The total number of frames discarded as this port was overloaded with incoming packets, and could
not keep up with the inflow.
Alignment Errors
The total number of packets received that had a length (excluding framing bits, but including FCS
octets) of between 64 and 1518 octets, inclusive, but had a bad Frame Check Sequence (FCS) with a
non-integral number of octets.
Jabbers Received
The total number of packets received that were longer than 1518 octets (excluding framing bits, but
including FCS octets), and had either a bad Frame Check Sequence (FCS) with an integral number of
octets (FCS Error) or a bad FCS with a non-integral number of octets (Alignment Error). Note that this
definition of jabber is different than the definition in IEEE-802.3 section 8.2.1.5 (10BASE5) and section
10.3.1.4 (10BASE2). These documents define jabber as the condition where any packet exceeds 20 ms.
The allowed range to detect jabber is between 20 ms and 150 ms.
Fragments Received
The total number of packets received that were less than 64 octets in length with ERROR CRC
(excluding framing bits but including FCS octets).
Undersize Received
The total number of packets received that were less than 64 octets in length with GOOD CRC
(excluding framing bits but including FCS octets).
Unacceptable Frame Type
The number of frames discarded from this interface due to being a frame type that the interface
cannot accept.
Time Since Counters Last
Cleared
The amount of time in days, hours, minutes, and seconds, that has passed since the statistics for this
interface were last reset.
Use the buttons to perform the following tasks:
• Click
Clear Counters
to clear all the counters. This resets all statistics for this port to the default values.
• Click
Clear All Counters
to clear all the counters for all ports on the switch. The button resets all statistics
for all ports to default values.
• Click
Refresh
to refresh the page with the most current data from the switch.
To retain the changes across the switch’s next power cycle, click
System
>
Configuration Storage
>
Save
.
