Link Layer Discovery Protocol (LLDP) is a Layer 2 discovery protocol defined in IEEE 802.lab. The LLDP technique allows the U2000 Web LCT to quickly obtain Layer 2 network topologies and topology changes when the network expands at a high speed.
In the NE Explorer, select the NE and then choose from the navigation tree.
Parameter |
Value |
Description |
|---|---|---|
Packet Transmission Interval(s) |
1-3600 Default: 30 |
Indicates the interval between two LLDP packet transmissions. |
TTL Multiplier |
Example: 10 |
Indicates a TTL multiplier. If no message is received from a neighbor NE within multiplier x TTL time, all information about the neighbor NE is deleted. |
Re-initialization Delay(s) |
1-10 Default: 2 |
Indicates the delay period of re-initialization, that is, the effect delay period after you configure a port from the disabled state to other states. |
Packets Transmitted in Fast Mode |
1-8 Default: 4 |
Indicates the number of continuously transmitted packets in the Fast mode. The Fast mode can be triggered when:
|
Parameter |
Value |
Description |
|---|---|---|
Port |
Slot ID-board name-port ID (PORT name) |
Indicates the port name. |
Mode |
Disable, Receive, Transmit&Receive, or Transmit Default: Disable |
Sets the working mode of a port. If the LLDP-enabled port is connected to neighbor NEs over an Ethernet unidirectionally, set the working mode to Transmit or Receive mode according to service directions. If LLDP is not enabled on the port, set the working mode to Disable. If LLDP is enabled on the port, set the working mode to Transmit&Receive. NOTE:
|
VLAN ID |
For example: 100 |
Sets the ID of a VLAN. The value range varies according to NEs. |
VLAN Priority |
0-7 |
Sets the priority of a VLAN. |
Multicast Mode |
Nearest bridge |
Sets the LLDP multicast mode supported by the port. Nearest bridge mode applies to discovery between neighbors in the same broadcast domain and crossing bridge is not allowed. |
Neighbor No. |
Example: 10 |
Displays the No. of a neighbor. |
Neighbor Holding Time(s) |
Example: 15 |
Displays the duration after the neighbor information is updated for the last time, that is, the last time receiving messages from the neighbor NE. |
Neighbor Remaining Time(s) |
Example: 15 |
Displays the remaining survival span of a neighbor NE. |
Received LLDP Packets |
Example: 446 |
Indicates the number of received LLDP packets. This parameter takes effect when Mode is set to Receive or Transmit&Receive. |
Transmitted Packets |
Example: 185 |
Indicates the number of transmitted LLDP packets. This parameter takes effect when Mode is set to Transmit or Transmit&Receive. |
Discarded Packets |
Example: 0 |
Indicates the number of discarded LLDP packets. |
Error Packets Received |
Example: 0 |
Indicates the number of error LLDP packets received. This parameter takes effect when Mode is set to Receive or Transmit&Receive. The value is the sum of error and discarded LLDP packets. A packet is regarded as an error packet when four mandatory TLVs are all incorrect. |
Aged LLDP Neighbors |
Example: 0 |
Indicates the number of aged LLDP neighbors. |
Discarded LLDP TLV Frames |
Example: 0 |
Indicates the number of discarded LLDP TLV frames, that is, the number of incorrect TLVs. |
Unidentifiable LLDP TLV Frames |
Example: 0 |
Indicates the number of unidentifiable LLDP TLV frames, that is, the number of carried TLVs that are beyond the following range: 0-7 and 127. |
Parameter |
Value |
Description |
|---|---|---|
Destination Address |
Example: Nearest bridge(01–80–C2–00–00–0E) |
Displays the destination address of the neighboring node. |
Type |
Example: Chassis ID |
Displays the queried type. |
Subtype |
Example: MAC Address |
Displays the queried subtype. |
Information |
Example: 80–F8–06–6F-E7–DC |
Displays the queried value. |