Chapter 4: Web configuration
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NS3562-8P-2S User Manual
The page includes the following fields:
Object
Description
Port
The port on which LLDP frames are received or transmitted.
Tx Frames
The number of LLDP frames transmitted on the port.
Rx Frames
The number of LLDP frames received on the port.
Rx Errors
The number of received LLDP frames containing some kind of error.
Frames Discarded
If an LLDP frame is received on a port, and the switch's internal table has
run full, the LLDP frame is counted and discarded. This situation is known as
"Too Many Neighbors" in the LLDP standard. LLDP frames require a new
entry in the table when the Chassis ID or Remote Port ID is not already
contained within the table. Entries are removed from the table when a given
port links down, an LLDP shutdown frame is received, or when the entry
ages out.
TLVs Discarded
Each LLDP frame can contain multiple pieces of information, known as TLVs
(TLV is short for "Type Length Value"). If a TLV is malformed, it is counted
and discarded.
TLVs Unrecognized
The number of well-formed TLVs, but with an unknown type value.
Age-Outs
Each LLDP frame contains information about how long time the LLDP
information is valid (age-out time). If no new LLDP frame is received within
the age out time, the LLDP information is removed, and the
Age-Out
counter
is incremented.
Diagnostics
This section provides the physical layer and IP layer network diagnostics tools for
troubleshooting. The diagnostic tools are designed for network managers to help them
quickly diagnose problems and better service customers.
Use the Diagnostics menu items to display and configure basic administrative details of
the industrial managed switch. Under System, the following topics are provided to
configure and view the system information:
• Ping Test
• IPv6 Ping Test
• Trace Route
• Cable Diagnostics
Cable diagnostics
Cable diagnostics performs tests on copper cables. These functions have the ability to
identify the cable length and operating conditions, and to isolate a variety of common
faults that can occur on the Cat5 twisted-pair cabling. There might be two states, which
are as follows: