Link Oam - FibroLAN Falcon-RX/812/G/A User Manual

Falcon R-Class | User Guide
Total Neighbor
Entries Aged Out
Local Counters
The displayed table contains a row for each interface.
Local Port
Tx Frames
Rx Frames
Rx Errors
Frames Discarded
TLVs Discarded
TLVs Unrecognized
Org. Discarded
Age-Outs
Clear

4.19 Link OAM

The 802.3ah OAM standard provides the operation, administration and maintenance tools and
mechanisms for monitoring link operation, fault detection and remote loopback control.
The 802.3ah is a complete standard for Ethernet in the first mile, which contains a link level (as
opposed to service level) OAM mechanism. The protocol automatically discovers 802.3ah neighbors
on a link. It can monitor and detect link degradation or failure in both bi-directional links and
unidirectional links. Once a degradation or failure is detected, it provides diagnostic tools, e.g., it can
set a link to "loopback" mode in order to check and isolate specific link problems.
The IEEE link layer OAM operates at the Ethernet layer and therefore (unlike SNMP or Ping) does not
require an IP address.
The MIB variable retrieval operation allows collection of performance statistics.
234
Shows the number of entries deleted due to Time-To-Live expiring.
The port on which LLDP frames are received or transmitted.
The number of LLDP frames transmitted on the port.
The number of LLDP frames received on the port.
The number of received LLDP frames containing error.
If an LLDP frame is received on a port, and the switch's internal table is
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 Chassis ID or Remote Port ID is not already
contained within the table. Entries are removed from the table when a
given port link is down, an LLDP shutdown frame has been received, or
when the entry ages out.
Each LLDP frame can contain multiple pieces of information, known as
TLVs (Type Length Value). If a TLV is malformed, it is counted and
discarded.
The number of well-formed TLVs, but with an unknown type of value.
If LLDP frame is received with an organizationally TLV, but the TLV is not
supported the TLV is discarded and counted.
Each LLDP frame contains information about how long 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.
If checked the counters for the specific interface are cleared when is
pressed.