Reference Guide

Link Layer Discovery Protocol | 593
PD sends five pieces of information in the Power-via-MDI TLV:
• Power Class: FTOS honors and displays it in the show power inline EXEC command (the PD
requested power value must be within the class maximum watts limit).
• Type: FTOS honors this request only when it is Type1 or Type2 PD and displays it in the show power
inline EXEC command. It does not honor Type1 or Type2 PSE requests.
• Priority: FTOS honors this and uses it for priority calculation.
• PD requested power value: FTOS honors this and uses it for power allocation.
• PSE allocated power value: FTOS honors this and uses it to check whether the PD is in sync with the
PSE.
Extended Power-via-MDI TLV enables advanced PoE management between LLDP-MED endpoints and
network connectivity devices.
Configuring LLDP
Configuring LLDP is a two-step process:
1. Enable LLDP globally. See Enabling LLDP.
2. Advertise TLVs out of an interface. See Advertising TLVs.
Related Configuration Tasks
• Viewing the LLDP Configuration
• Viewing Information Advertised by Adjacent LLDP Agents
• Configuring LLDPDU Intervals
• Configuring Transmit and Receive Mode
• Configuring a Time to Live
• Debugging LLDP
Important Points to Remember
• LLDP is disabled by default.
• Dell Networking systems support up to 8 neighbors per interface.
• Dell Networking systems support a maximum of 8000 total neighbors per system. If the number of
interfaces multiplied by 8 exceeds the maximum, the system will not configure more than 8000.
• INTERFACE level configurations override all CONFIGURATION level configurations.
• LLDP is not hitless.
LLDP Compatibility
• Spanning Tree and Force10 Ring Protocol “blocked” ports allow LLDPDUs.