Source note · Voice VLAN and LLDP-MED and CDP and PoE for IP phones
On Catalyst 9300 the default PoE power management mode is auto: the port detects whether the device needs power and grants it first come, first served if the budget allows.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Catalyst 9300 Series Switches
- Subsystem
- PoE power management
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.18.x
- Checked
- 2026-09-24
Sources
- Interface and Hardware Components Configuration Guide, Cisco IOS XE 17.18.x (Catalyst 9300 Switches) - Configuring Power over Ethernet — Cisco Systems · tier 2 current vendor documentation · Configuring Power over Ethernet > Power Management Modes
Cite this note
APA
WarmTransfer. (2026, September 24). Voice VLAN and LLDP-MED and CDP and PoE for IP phones: source note voice-vlan-lldp-poe-c9300-poe-auto-default. WarmTransfer. https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-c9300-poe-auto-default
BibTeX
@misc{warmtransfer-claim-voice-vlan-lldp-poe-c9300-poe-auto-default,
title = {Voice VLAN and LLDP-MED and CDP and PoE for IP phones: source note voice-vlan-lldp-poe-c9300-poe-auto-default},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-c9300-poe-auto-default},
note = {Source note voice-vlan-lldp-poe-c9300-poe-auto-default, checked 2026-09-24}
}