diff --git a/README.md b/README.md
index 93c157f..48486bc 100644
--- a/README.md
+++ b/README.md
@@ -82,16 +82,22 @@
     	IP address:port (default ":50060")
   -aw int
     	Wait time (sec) for activation WPA supplicants (default 10)
+  -d string
+    	Debug Level(TRACE DEBUG INFO WARN ERROR) (default "DEBUG")
   -dw int
     	Wait time (sec) for activation DHCP clients (default 20)
   -i int
     	Number of PON-IF ports (default 1)
   -id int
-    	OLT-ID (default: 0)
+    	OLT-ID
+  -k string
+    	Kafka broker
   -m string
     	Emulation mode (default, aaa, both (aaa & dhcp)) (default "default")
   -n int
     	Number of ONUs per PON-IF port (default 1)
   -s string
-    	DHCP Server IP Address (default "182.21.0.1")
+    	DHCP Server IP Address (default "182.21.0.128")
+  -v int
+    	Interval each Indication (ms) (default 1000)
 ```
diff --git a/core/mediator.go b/core/mediator.go
index 002ce6d..cbcee0f 100644
--- a/core/mediator.go
+++ b/core/mediator.go
@@ -41,7 +41,6 @@
 	dhcpwait    int
 	dhcpservip  string
 	intvl       int
-	intvl_test  int
 	Mode        Mode
 	KafkaBroker string
 	Debuglvl	string
@@ -57,8 +56,7 @@
 	aaawait := flag.Int("aw", 10, "Wait time (sec) for activation WPA supplicants")
 	dhcpwait := flag.Int("dw", 20, "Wait time (sec) for activation DHCP clients")
 	dhcpservip := flag.String("s", "182.21.0.128", "DHCP Server IP Address")
-	intvl := flag.Int("v", 1, "Interval each Indication")
-	intvl_test := flag.Int("V", 1, "Interval each Indication")
+	intvl := flag.Int("v", 1000, "Interval each Indication (ms)")
 	kafkaBroker := flag.String("k", "", "Kafka broker")
 	o.Mode = DEFAULT
 	debg := flag.String("d", "DEBUG", "Debug Level(TRACE DEBUG INFO WARN ERROR)")
@@ -76,7 +74,6 @@
 	o.dhcpwait = *dhcpwait
 	o.dhcpservip = *dhcpservip
 	o.intvl = *intvl
-	o.intvl_test = *intvl_test
 	o.KafkaBroker = *kafkaBroker
 	o.address = (strings.Split(*addressport, ":")[0])
 	tmp, _ := strconv.Atoi(strings.Split(*addressport, ":")[1])
diff --git a/core/tester.go b/core/tester.go
index a2d9a7d..279d2c8 100644
--- a/core/tester.go
+++ b/core/tester.go
@@ -38,7 +38,6 @@
 type TestManager struct {
 	DhcpServerIP string
 	Pid          []int
-	Intvl        int
 	testers      map[device.Devkey]*Tester
 	ctx          context.Context
 	cancel       context.CancelFunc
@@ -54,7 +53,6 @@
 func NewTestManager(opt *option) *TestManager {
 	t := new(TestManager)
 	t.DhcpServerIP = opt.dhcpservip
-	t.Intvl = opt.intvl_test
 	return t
 }