02.10.2013 Views

FTOS Configuration Guide for the C-Series - Force10 Networks

FTOS Configuration Guide for the C-Series - Force10 Networks

FTOS Configuration Guide for the C-Series - Force10 Networks

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Note: The S25V and S50V models contain oversized AC power supplies in order to support PoE. You can<br />

also add <strong>the</strong> external <strong>Force10</strong> 470W Redundant Power Supply to power more PoE devices. For details,<br />

see Powering Additional PoE Ports on <strong>the</strong> S-<strong>Series</strong> on page 648 and see <strong>the</strong> power budget command in<br />

<strong>the</strong> Power Over E<strong>the</strong>rnet (PoE) chapter of <strong>the</strong> <strong>FTOS</strong> Command Reference <strong>for</strong> <strong>the</strong> S-<strong>Series</strong>.<br />

Configuring Power over E<strong>the</strong>rnet<br />

Configuring PoE is a two-step process:<br />

1. Connect <strong>the</strong> IEEE 802.3af-compliant powered device directly to a port.<br />

2. Enable PoE on <strong>the</strong> port, as described next.<br />

Related <strong>Configuration</strong> Tasks<br />

• Managing PoE Ports and <strong>the</strong> Power Budget on page 644<br />

• Monitoring <strong>the</strong> Power Budget on page 645<br />

• Managing Power Priorities on page 646<br />

• Recovering from a Failed Power Supply on page 647<br />

• Powering Additional PoE Ports on <strong>the</strong> S-<strong>Series</strong> on page 648<br />

Enabling PoE on a Port<br />

PoE is disabled by default. Enable PoE on a port from INTERFACE mode using <strong>the</strong> command<br />

power inline {auto [max_milli-watts] | static [max_milli-watts]}.<br />

• The power inline auto command allows <strong>the</strong> port to determine <strong>the</strong> amount of power that a connected<br />

Class 1-4 powered device requires, and supply it.<br />

• The power inline static command without <strong>the</strong> qualifier guarantees 15.4W to <strong>the</strong> powered device.<br />

• You can limit <strong>the</strong> maximum amount of power (in milli-watts) available to a powered device with <strong>the</strong><br />

command power inline auto max_milli-watts or with power inline static max_milli-watts<br />

• Disable PoE on a port using <strong>the</strong> no power inline command..<br />

Ports configured with power inline auto have a lower priority <strong>for</strong> access to power than those configured<br />

with power inline static. As a second layer of priority setting, use <strong>the</strong> [no] power inline priority<br />

command. Use <strong>the</strong> power inline static max_milli-watts command to avoid allocating more power than<br />

necessary to a port because allocated power is made unavailable to o<strong>the</strong>r ports regardless of whe<strong>the</strong>r it is<br />

consumed. Typical IP phones use 3-5 Watts.<br />

642 Power over E<strong>the</strong>rnet

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!