# CMM & uplink
**URL:** https://community.cambiumnetworks.com/t/cmm-uplink/35333
**Category:** PMP
**Created:** [May 8, 2009, 12:34pm UTC](https://community.cambiumnetworks.com/t/cmm-uplink/35333 "2009-05-08T12:34:51Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@pcpolo](https://community.cambiumnetworks.com/u/pcpolo)
#### Post date: [May 8, 2009, 12:34pm UTC](https://community.cambiumnetworks.com/t/cmm-uplink/35333/1 "2009-05-08T12:34:51Z")
In the CMM micro, in order for 802.1Q tagging to work, does the Uplink Port need to be checked as well as the “Enable 802.1Q tagging” checkbox?
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### Author:  [@salad](https://community.cambiumnetworks.com/u/salad)
#### Post date: [May 8, 2009, 4:11pm UTC](https://community.cambiumnetworks.com/t/cmm-uplink/35333/2 "2009-05-08T16:11:54Z")
Nope - the Uplink Port feature simply sets up the port-based VLANning below so that each port can only talk to the Uplink. The CMM Micro will pass dot1q frames by default, but always on a broadcast basis. “Enable 802.1Q tagging” only moves management of the CMM Micro to a tagged VLAN instead of untagged.
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### Author:  [@pcpolo](https://community.cambiumnetworks.com/u/pcpolo)
#### Post date: [May 8, 2009, 4:45pm UTC](https://community.cambiumnetworks.com/t/cmm-uplink/35333/3 "2009-05-08T16:45:52Z")
When you “moves management of the CMM Micro to a tagged VLAN instead of untagged”, so CMM traffic is the only traffic tagged when this is enabled, not the traffic from the APs, correct?
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### Author:  [@salad](https://community.cambiumnetworks.com/u/salad)
#### Post date: [May 8, 2009, 5:07pm UTC](https://community.cambiumnetworks.com/t/cmm-uplink/35333/4 "2009-05-08T17:07:48Z")
Right. The CMM Micro is not a real dot1q VLAN switch. All VLAN membership, tagging and untagging will need to be done by the connected devices like switches and APs.