Source note · Voice VLAN and LLDP-MED and CDP and PoE for IP phones
On Catalyst 9300, if a network-policy profile is configured on an interface first, switchport voice vlan can no longer be applied there, but a network-policy profile can be added to an interface that already has switchport voice vlan.
Checked 2026-09-24
If you first configure a network-policy profile on an interface, you cannot apply the switchport voice vlan command on the interface.
- Vendor
- Cisco
- Product
- Catalyst 9300 Series Switches
- Subsystem
- LLDP-MED network policy
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.17.x
- Checked
- 2026-09-24
Sources
- Interface and Hardware Components Configuration Guide, Cisco IOS XE 17.17.x (Catalyst 9300 Switches) - Configuring LLDP, LLDP-MED, and Wired Location Service — Cisco Systems · tier 2 current vendor documentation · Configuring LLDP, LLDP-MED, and Wired Location Service > Restrictions / network-policy guidelines
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-netpolicy-vs-voice-vlan. WarmTransfer. https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-c9300-netpolicy-vs-voice-vlan
BibTeX
@misc{warmtransfer-claim-voice-vlan-lldp-poe-c9300-netpolicy-vs-voice-vlan,
title = {Voice VLAN and LLDP-MED and CDP and PoE for IP phones: source note voice-vlan-lldp-poe-c9300-netpolicy-vs-voice-vlan},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-c9300-netpolicy-vs-voice-vlan},
note = {Source note voice-vlan-lldp-poe-c9300-netpolicy-vs-voice-vlan, checked 2026-09-24}
}