diff --git a/internal/common/options.go b/internal/common/options.go
index 545bb5c..83b5b56 100644
--- a/internal/common/options.go
+++ b/internal/common/options.go
@@ -92,6 +92,7 @@
 	OltRebootDelay     int    `yaml:"reboot_delay"`
 	PortStatsInterval  int    `yaml:"port_stats_interval"`
 	OmciResponseRate   uint8  `yaml:"omci_response_rate"`
+	UniPorts           uint32 `yaml:"uni_ports"`
 }
 
 type BBSimConfig struct {
@@ -230,6 +231,8 @@
 	nni := flag.Int("nni", int(conf.Olt.NniPorts), "Number of NNI ports per OLT device to be emulated")
 	pon := flag.Int("pon", int(conf.Olt.PonPorts), "Number of PON ports per OLT device to be emulated")
 	onu := flag.Int("onu", int(conf.Olt.OnusPonPort), "Number of ONU devices per PON port to be emulated")
+	uni := flag.Int("uni", int(conf.Olt.UniPorts), "Number of UNI Ports per ONU device to be emulated")
+
 	oltRebootDelay := flag.Int("oltRebootDelay", conf.Olt.OltRebootDelay, "Time that BBSim should before restarting after a reboot")
 	omci_response_rate := flag.Int("omci_response_rate", int(conf.Olt.OmciResponseRate), "Amount of OMCI messages to respond to")
 
@@ -258,6 +261,7 @@
 	conf.Olt.ID = int(*olt_id)
 	conf.Olt.NniPorts = uint32(*nni)
 	conf.Olt.PonPorts = uint32(*pon)
+	conf.Olt.UniPorts = uint32(*uni)
 	conf.Olt.OnusPonPort = uint32(*onu)
 	conf.Olt.OltRebootDelay = *oltRebootDelay
 	conf.Olt.OmciResponseRate = uint8(*omci_response_rate)
@@ -333,6 +337,7 @@
 			OltRebootDelay:     60,
 			PortStatsInterval:  20,
 			OmciResponseRate:   10,
+			UniPorts:           4,
 		},
 		BBRConfig{
 			LogLevel:  "debug",