On Cisco MPP desk phones, a manually configured VLAN ID is used only when neither CDP nor LLDP-MED sets the VLAN. If no VLAN ID is configured manually either, the phone uses no VLAN.
Checked 2026-10-02
If the VLAN ID is not configured manually, no VLAN is supported.
- Vendor
- Cisco
- Product
- Cisco IP Phone Multiplatform Firmware
- Subsystem
- voice VLAN
- Deployment
- multi-tenant, on-premises
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Cisco IP Desk Phone with Multiplatform Firmware (MPP) - Administration Guide - Technical Details — Cisco Systems · tier 2 current vendor documentation · Final Network Policy Resolution and QoS
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting IP phones that do not get a voice VLAN or DHCP options: source note ip-phone-dhcp-vlan-troubleshooting-mpp-manual-vlan-fallback. WarmTransfer. https://warmtransfer.net/knowledge/claims/ip-phone-dhcp-vlan-troubleshooting-mpp-manual-vlan-fallback
BibTeX
@misc{warmtransfer-claim-ip-phone-dhcp-vlan-troubleshooting-mpp-manual-vlan-fallback,
title = {Troubleshooting IP phones that do not get a voice VLAN or DHCP options: source note ip-phone-dhcp-vlan-troubleshooting-mpp-manual-vlan-fallback},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/ip-phone-dhcp-vlan-troubleshooting-mpp-manual-vlan-fallback},
note = {Source note ip-phone-dhcp-vlan-troubleshooting-mpp-manual-vlan-fallback, checked 2026-10-02}
}