ZyXEL Communications RGS Series, User Manual

Page: 227 / 259

227
5.4.48 Port Statistics
This page provides an overview of all LLDP traffic.
Two types of counters are shown. Global counters are counters that refer to the whole switch, while local
counters refer to per port counters for the currently selected switch.
Object Description
Global Counters
Neighbor entries were
last change Shows the time when the last entry was last deleted or added. It also shows the time
elapsed since the last change was detected.
Total Neighbors Entries
Added Shows the number of new entries added since switch reboot.
Total Neighbors Entries
Deleted Shows the number of new entries deleted since switch reboot.
Total Neighbors Entries
Dropped Shows the number of LLDP frames dropped due to the entry table being full.
Total Neighbors Entries
Aged Out
Shows the number of entries deleted due to Time-To-Live expiring.
Local Counters
Local 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 a 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's link is 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.