Source note · Voice VLAN and LLDP-MED and CDP and PoE for IP phones
On Catalyst 9300, switchport voice vlan untagged tells the phone to send untagged voice traffic, while switchport voice vlan none lets the phone use its own configuration to send untagged voice traffic.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Catalyst 9300 Series Switches
- Subsystem
- voice VLAN
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.15.x
- Checked
- 2026-09-24
Sources
- VLAN Configuration Guide, Cisco IOS XE 17.15.x (Catalyst 9300 Switches) - Configuring Voice VLANs — Cisco Systems · tier 2 current vendor documentation · Configuring Voice VLANs > Cisco IP Phone Voice Traffic (switchport voice vlan options)
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-vv-mode-untagged-none. WarmTransfer. https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-c9300-vv-mode-untagged-none
BibTeX
@misc{warmtransfer-claim-voice-vlan-lldp-poe-c9300-vv-mode-untagged-none,
title = {Voice VLAN and LLDP-MED and CDP and PoE for IP phones: source note voice-vlan-lldp-poe-c9300-vv-mode-untagged-none},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-c9300-vv-mode-untagged-none},
note = {Source note voice-vlan-lldp-poe-c9300-vv-mode-untagged-none, checked 2026-09-24}
}