32
Table of Contents
Linksys
32
Table of Contents
Linksys
• Power Priority Level—Port priority is low, high, or critical, for use when
the power supply is low. For example, if the power supply is running at
99% usage and port 1 is prioritized as high, but port 3 is prioritized as low,
port 1 receives power and port 3 might be denied power.
• Class—Class configured on this port. The classes are shown in the
following:
• Class • Maximum Power Delivered by Device
Port
• 0 • 15.4 watt
• 1 • 4.0 watt
• 2 • 7.0 watt
• 3 • 15.4 watt
• 4 • 30.0 watt
• Max Power Allocation (mW)— Maximum amount of power permitted on
this port. The switch hardware may actually supply 5-10% more power
than Max Power Allocation to accommodate the power loss over the wire.
• Power Consumption (mW)—Amount of power assigned to the powered
device connected to the selected interface.
• Operational Status—Whether the Class Limit mode is enabled or disabled
on the port.
STEP 2 Select a port and click Edit. Enter the fields as described above.
STEP 3 Click Apply. The PoE settings for the port are written to the Running
Configuration file.
LLDP
This section provides information for configuring Discovery. It covers the
following topics:
• Overview
• Feature Configuration
• LLDP MED Ports
• LLDP Local Information
• LLDP Neighbor Information
• LLDP MED Network Policy
Overview
Link Layer Discovery Protocol (LLDP) is a link layer protocol for directly-
connected LLDP-capable neighbors to advertise themselves and their
capabilities. LLDP enables network managers to troubleshoot and enhance
network management in multi-vendor environments. LLDP standardizes
methods for network devices to advertise themselves to other systems, and to
store discovered information.
By default, the device sends an LLDP advertisement periodically to all its
interfaces and processes incoming LLDP packets as required by the protocols. In
LLDP, advertisements are encoded as TLV (Type, Length, Value) in the packet.
The information learned is stored in the data in a Management Information
Base (MIB). The network management system models the topology of the
network by querying these MIB databases.
By default, the device terminates and processes all incoming LLDP packets as
required by the protocol.
The LLDP protocol has an extension called LLDP Media Endpoint Discovery
(LLDP-MED) that provides and accepts information from media endpoint
devices such as VoIP phones and video phones. For further information about
LLDP-MED, see LLDP MED Network Policy.
The following LLDP configuration notes apply:
• LLDP can be enabled or disabled globally or per port. The LLDP capability
of a port is relevant only if LLDP is globally enabled.
• If LLDP is globally enabled, the device filters out incoming LLDP packets
from ports that are LLDP-disabled.
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