Cisco to UniFi Trunk

Networking & Firewalls
1

We recently picked up two new USW-24-POE switches to run some cameras at one of our locations. First time trying to bridge between these two vendors. We are trying to set up some VLANs from our main Cisco switch (C3750G) at the location to the two UniFi’s.

The UniFi’s in full default mode had no issues getting DHCP from a VLAN I placed the port into for the initial setup and update. Then did the following:

-Made sure Tagged VLAN Management was set to allow all on the UniFi and did had the Cisco port set to ‘switchport trunk encap dot1q’ ‘switchport mode trunk’ That killed the connection immediately.

-Then read they both need to be in the same native VLAN. Since both the UniFi MGMT VLAN and our native Cisco are VLAN 1 didn’t work, I created an VLAN on both devices, set the cisco to ‘switchport trunk native vlan 20’ on the interface to the UniFi switch and swapped the Native VLAN / Network on the UniFi over to VLAN 20 while still having the Tagged VLAN management set to allow all. Still no traffic at all and it could no longer connect to our controller. I had to factory reset it via SSH to get it back online.

What am I missing? I feel the native VLANcommands were the answers to most people’s problems in google searches but I can’t seem to remedy what is causing mine.

Thanks for any help!

2

Just adding to this post in case someone else has this issue and finds it here:

Watched the great video by Mactelecom Networks here. Followed his instructions to leave the default tagged uplink to Cisco alone. Untagged the few camera ports so they’d be on their own VLAN and followed his commands which caused traffic to flow. Happy to have that fixed!

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