Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH ユーザーズマニュアル

PoE capability for the XCM8848T modules are available only with 

the addition of an optional PoE Daughter Module. See 

on page 184 

for more information.

Summary of PoE Features

The NETGEAR 8800 implementation of PoE supports the following features:

Configuration and control of the power distribution for PoE at the system, slot, and port 

levels

Real-time discovery and classification of IEEE 802.3af-compliant PDs and many legacy 

devices

Monitor and control of port PoE fault conditions including exceeding configured class 

limits and power limits and short-circuit detection

Support for configuring and monitoring PoE status at the system, slot, and port levels

Management of an over-subscribed power budget

Port LED control for indicating the link state

Support for hitless failover in a chassis with two MSMs

For detailed information on using the PoE commands to configure, manage, and display PoE 
settings, see the NETGEAR 8800 Chassis Switch CLI Manual.

Power Checking for PoE Module

PoE modules require more power than other I/O modules. When a chassis containing a PoE 
module is booted or a new PoE module is inserted, the power drain is calculated. Before the 
PoE module is powered up, the chassis calculates the power budget and powers up the PoE 
module only if there is enough power. The chassis powers up as many I/O modules as 
possible with lower-numbered slots having priority.

If your chassis has an inline power module and there is not enough 

power to supply the configured inline power for the slot, that slot will 
not power on; the slot will not function in data-only mode without 
enough power for inline power.

If a PoE module is inserted into a chassis, the chassis calculates the power budget and only 
powers up the PoE module if there is enough power. Installed modules are not affected. 
However, if you reboot the chassis, power checking proceeds as described in the previous