3Com S7906E - Switch, Configuration Manual

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1-16
Figure 1-2 Network diagram for PoE
GE3/0/1
GE3/0/2
GE5/0/1
GE5/0/2
Configuration procedure
# Enable PoE for the PSE.
<Sysname> system-view
[Sysname] poe enable pse 4
[Sysname] poe enable pse 6
# Set the maximum power of PSE 4 to 400 watts.
[Sysname] poe max-power 400 pse 4
# Enable PoE on GigabitEthernet 3/0/1 and GigabitEthernet 5/0/1.
[Sysname] interface gigabitethernet 3/0/1
[Sysname-GigabitEthernet3/0/1] poe enable
[Sysname-GigabitEthernet3/0/1] quit
[Sysname] interface gigabitethernet 5/0/1
[Sysname-GigabitEthernet5/0/1] poe enable
[Sysname-GigabitEthernet5/0/1] quit
# Enable PoE on GigabitEthernet 3/0/2, and set its power priority to critical .
[Sysname] interface gigabitethernet 3/0/2
[Sysname-GigabitEthernet3/0/2] poe enable
[Sysname-GigabitEthernet3/0/2] poe priority critical
[Sysname-GigabitEthernet3/0/2] quit
# Enable PoE on GigabitEthernet 5/0/2, and set its maximum power to 9000 milliwatts.
[Sysname] interface gigabitethernet 5/0/2
[Sysname-GigabitEthernet5/0/2] poe enable
[Sysname-GigabitEthernet5/0/2] poe max-power 9000
After the configuration takes effect, the IP telephones and AP devices are powered and can work
normally.
Troubleshooting PoE
Symptom 1 : Setting the priority of a PoE interface to critical fails.
Analysis :