Administrator Guide

advertise dot3-tlv power-via-mdi
Example of Advertising in LLDP Configuration Mode
The following example configures all the interfaces to advertise extended power though dot3–TLVs in configuration mode.
Dell(conf-lldp)#advertise dot3-tlv power-via-mdi
Example of Advertising in LLDP Interface Configuration Mode
The following example configures interface peGigE 0/0/1 to advertise extended power though dot3–TLVs.
Dell(conf)#interface peGigE 0/0/1
Dell(conf-if-pegi-0/0/1)#protocol lldp
Dell(conf-if-pegi-0/0/1-lldp)#advertise dot3-tlv power-via-mdi
Detecting Legacy Devices and Allocating Power
To enable detection of legacy devices and allocation of inline power to the devices on a port extender, use the power inline legacy
pe pe—id stack-unit unit-number command in Configuration mode. To disable detection of legacy devices, use the [no]
power inline legacy pe pe-id stack-unitunit-number command.
This command has the following parameters:
• pe pe-id — Specify the port extender ID. The range is from 0 to 255.
• stack-unit unit-number — Specify the stack unit number of the port extender. The range is from 0 to 7.
• Enable or disable detection and allocate inline power to legacy devices on a port extender.
CONFIGURATION
power inline legacy pe pe—id stack-unit unit-number
Example of Detecting and Allocating Power to Legacy Devices
The following example shows detecting and allocating power to legacy devices on the port extender.
Dell(conf)#power inline legacy pe 0 stack-unit 0
Deploying Voice Over IP (VoIP)
For a complete list of all PoE commands, see the Dell Networking OS Command Line Reference Guide.
Current VoIP phones follow the same basic boot and operations process:
1. Wait for an LLDP from the Ethernet switch.
2. Obtain an IP address from a dynamic host configuration protocol (DHCP) server.
3. Send an LLDP-MED frame to the switch.
4. Wait for an LLDP-MED frame from the switch and read the Network Policy TLV to get the VLAN ID, Layer 2 priority, and DSCP value.
5. Download applications and software from the call manager.
6. After the configuration completes, send voice packets as tagged frames and data packets as untagged frames.
The following shows a basic configuration for a deployment in which the end workstation plugs into an IP phone for its Ethernet
connection.
Figure 121. PoE VoIP
Power over Ethernet (PoE)
723