Dell PowerSwitch S4112F-ON OS10 Enterprise Edition User Guide Release 10.4.1.0 - Page 180
Link Layer Discovery Protocol, Protocol data units
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Actor Admin: State BCFHJKNO Key 1 Priority 32768 Oper: State BDEGIKNO Key 1 Priority 32768 Partner Admin: State BCEGIKNP Key 0 Priority 0 Oper: State BDEGIKMO Key 1 Priority 32768 Supported Releases 10.2.0E or later show lacp system-identifier Displays the LACP system identifier for a device. Syntax show lacp system-identifier Parameters None Default Not configured Command Mode EXEC Usage Information The LACP system ID is a combination of the configurable LACP system priority value and the MAC address. Each system that runs LACP has an LACP system priority value. The default value is 32768 or configure a value between 1 and 65535. LACP uses the system priority with the MAC address to form the system ID and uses the system priority during negotiation with other devices. A higher system priority value means a lower priority. The system ID is different for each device. Example OS10# show lacp system-identifier Actor System ID: Priority 32768, Address 90:b1:1c:f4:9b:8a Supported Releases 10.2.0E or later Link Layer Discovery Protocol LLDP enables a LAN device to advertise its system and receive system information from adjacent LAN devices. • LLDP is enabled by default on OS10 interfaces. • An LLDP-enabled interface can support up to eight neighbors. An OS10 switch supports a maximum of 250 total neighbors per system. • OS10 devices receive and periodically transmit Link Layer Discovery Protocol Data Units (LLDPDUs), which are data packets. The default transmission interval is 30 seconds. • LLDPDU information received from a neighbor expires after the default time to live (TTL) value (120 seconds). • Spanning-tree blocked ports allow LLDPDUs. • 802.1X-controlled ports do not allow LLDPDUs until the connected device is authenticated. • Link layer discovery protocol-media endpoint discovery (LLDP-MED) is enabled on all interfaces by default. Protocol data units LLDP devices exchange system information represented as type, length, and value (TLV) segments: Type Length Value Information included in the TLV. Value (in bytes) of the TLV after the Length field. System information the agent is advertising. 180 Layer 2
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