User Manual
96
UniFi Controller User Guide
Ubiquiti Networks, Inc.
Chapter 11: UniFi Switch Details
•  PoE  All ports are set to auto-sensing PoE+ by default.
 - Off  Disable PoE.
 - 24V Passive  Select this option to power devices that 
support 24V passive PoE.
Note: Before activating 24V passive PoE, ensure 
that the connected device supports PoE and the 
supplied voltage.
 - PoE+  802.3at/af devices can be plugged in and 
automatically receive PoE.
•  Networks/VLANs  Select the appropriate network or 
VLAN, or select Disabled to disable this port. The default 
is All.
•  Advanced Options  Click the icon to display additional 
options.
•  Operation  Select the operation mode for this port. 
Switching, Mirroring, or Aggregate. Proceed to the 
appropriate section.
Switching
 - Switching  The default mode.
•  Link Negotiation  The default is Auto, enabling 
Ethernet autonegotiation. This is the appropriate 
configuration for almost all circumstances. Never 
use Manual unless the device being connected 
to the port has also been set manually; if so, then 
switch to Manual to disable autonegotiation and 
enable manual configuration of duplex and speed:
•  Full Duplex  (Available for RJ45 ports only.) Ifthis 
option is enabled, the port will be set to full 
duplex. If disabled, it will be set to half duplex. 
Full-duplex transmission is enabled by default.
•  Link Speed  Set the link speed of the interface 
as needed to match the device plugged into 
the port. For RJ45 ports, select 1000Mbps, 
100Mbps, or 10Mbps. For SFP+ ports, select 
10Gbps or 1000Mbps. SFP ports must be set to 
1000Mbps. 
 - Isolation  Select this option to mark this port as an 
isolated port. Isolated ports cannot communicate 
directly with any other isolated port.
 - Storm Control  Monitor the unicast, multicast, and/or 
broadcast traffic for this port. If the specified type 
of traffic on this port exceeds the threshold rate you 
specify, then the UniFi Switch drops the excess traffic.
•  Unicast  Select this option to monitor unicast traffic. 
Enter the threshold value in packets per second.
•  Multicast  Select this option to control unicast 
traffic destined to unknown MAC addresses. Enter 
the threshold in packets per second. 
Note: Unlike Broadcast and Multicast storm 
control, the Unicast storm control does not 
apply to all unicast traffic. It applies only to 
traffic destined to a MAC address not found 
in the switch’s MAC address table. Most 
devices should have a very low rate of such 
traffic. High rates of such traffic are indicative 
of malicious activity, or a broken device. 
Blocking excessive rates of such traffic may 
prevent problems on other devices on the 
network.
•  Broadcast  Select this option to monitor broadcast 
traffic. Enter the threshold in packets per second.
•  Apply  Click Apply to save changes.
•  Cancel  Click Cancel to discard changes.










