When both CDP and LLDP-MED are enabled on a Cisco MPP desk phone, the VLAN network policy is whichever was last set or changed by either discovery protocol.
Checked 2026-10-02
If both CDP and LLDP-MED are enabled, the network policy for the VLAN determines the last policy set or changed with either one of the discovery modes.
- Vendor
- Cisco
- Product
- Cisco IP Phone Multiplatform Firmware
- Subsystem
- LLDP-MED
- 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-last-policy-wins. WarmTransfer. https://warmtransfer.net/knowledge/claims/ip-phone-dhcp-vlan-troubleshooting-mpp-last-policy-wins
BibTeX
@misc{warmtransfer-claim-ip-phone-dhcp-vlan-troubleshooting-mpp-last-policy-wins,
title = {Troubleshooting IP phones that do not get a voice VLAN or DHCP options: source note ip-phone-dhcp-vlan-troubleshooting-mpp-last-policy-wins},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/ip-phone-dhcp-vlan-troubleshooting-mpp-last-policy-wins},
note = {Source note ip-phone-dhcp-vlan-troubleshooting-mpp-last-policy-wins, checked 2026-10-02}
}