Magic VLAN

Use Case

Classify and dynamically assign devices(MAC) into Device-Type VLANs

4 supported Device-Types today

• Data

• Voice

• Video

• IOT

Customer Input

Per interface specify Device-Type-VLAN for the different Device-Types

• up to 4 VLANS per Device-Type

global user defined MAC to Device-Type configuration

• up to 8 mappings

global user defined "string" to Device-Type configuration

• up to 16, 16byte mappings

• preconfigured with Cisco Phone CDP string

Design

MAC-VLAN mapping is how we classify Device-Types

• up to 8 MAC-VLAN mappings per port

Classification Order

• user MAC

• user string in CDP description

• user string in LLDP description

• LLDP capability check

• Map to Data VLAN

Interoperability

If MAC-VLAN conflicts with NAC then NAC wins

Evaluate support for Discard-TAG option

• Discard TAG discards the VLAN tag on the incoming traffic and reclassifies based on classification order

apply Device-Type specific QoS template to Device-Type VLAN

• Needs QoS Template support

LLDP - QoS

Troubleshooting

syslog

• standard

• trace

Document

Author: Sharad Ahlawat

Last Updated: Jun 1, 2019