Source note · Voice VLAN and LLDP-MED and CDP and PoE for IP phones
On Cisco 8800 phones under Unified CM, the Admin VLAN ID is used only when the phone gets no auxiliary VLAN from the switch, and the phone does not inherit the operational VLAN from it while CDP or LLDP-MED is enabled.
Checked 2026-09-24
Used only if the phone does not receive an auxiliary VLAN from the switch; otherwise, this value is ignored.
- Vendor
- Cisco
- Product
- Cisco IP Phone 8800 Series
- Subsystem
- VLAN
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager - Cisco IP Phone Installation — Cisco Systems · tier 2 current vendor documentation · Cisco IP Phone Installation > Network Setup fields > Admin VLAN ID
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-8800-admin-vlan-fallback. WarmTransfer. https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-8800-admin-vlan-fallback
BibTeX
@misc{warmtransfer-claim-voice-vlan-lldp-poe-8800-admin-vlan-fallback,
title = {Voice VLAN and LLDP-MED and CDP and PoE for IP phones: source note voice-vlan-lldp-poe-8800-admin-vlan-fallback},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-8800-admin-vlan-fallback},
note = {Source note voice-vlan-lldp-poe-8800-admin-vlan-fallback, checked 2026-09-24}
}