The following table identifies product support for the different PoE types.
| Product | Highest PoE Standard |
|---|---|
|
5520-12MW-36W |
802.3bt Type 4 PoE (90W) |
|
5520-24W |
802.3bt Type 4 PoE (90W) |
|
5520-48W |
802.3bt Type 4 PoE (90W) |
|
VSP 4450GSX-PWR+ |
802.3at Type 2 PoE (30W) |
|
VSP 4450GTX-HT-PWR+ |
802.3at Type 2 PoE (30W) |
|
VSP4900-12MXU-12XE |
802.3bt Type 3 PoE (60W) |
|
VSP4900-48P |
802.3at Type 2 PoE (30W) |
The global configured detection type specifies the following versions of the IEEE standard to support. Standards are arranged from oldest (top) to newest (bottom).
|
Detection Type |
Power Mode |
|---|---|
|
802.3af |
Normal |
|
802.3af and legacy |
Normal |
|
802.3at |
High |
|
802.3at and legacy |
High |
|
802.3bt type 3 |
Normal |
|
802.3bt type 4 |
Normal |
|
802.3bt and legacy |
Normal |
By default, 802.3at (including legacy) is the POE PD detection type. In this high power mode, Class 4 PDs receive up to 32 watts of power.
Note
802.3at is backwards compatible with 802.3af. Therefore, both normal power and high power devices are supported in this mode.
802.3af (maximum 15.4 W) and 802.3at (maximum 25.5W) are the older standards.
Note
Changing from a newer IEEE standard to an older IEEE standard is permitted, however power delivery is interrupted during this operation, and all PoE devices are reset. There is no service interruption when changing from an older IEEE standard to a newer IEEE standard.