diff --git a/clock.c b/clock.c
index 6f6b1f8..20319c9 100644
--- a/clock.c
+++ b/clock.c
@@ -156,7 +156,7 @@ UInteger8 clock_class(struct clock *c)
 }
 
 struct clock *clock_create(char *phc, struct interface *iface, int count,
-			   struct defaultDS *ds)
+			   struct defaultDS *ds, struct port_defaults *pod)
 {
 	int i, max_adj, sw_ts = 0;
 	struct clock *c = &the_clock;
@@ -219,7 +219,7 @@ struct clock *clock_create(char *phc, struct interface *iface, int count,
 	}
 
 	for (i = 0; i < count; i++) {
-		c->port[i] = port_open(iface[i].name, iface[i].transport,
+		c->port[i] = port_open(pod, iface[i].name, iface[i].transport,
 				       iface[i].timestamping, 1+i, DM_E2E, c);
 		if (!c->port[i]) {
 			pr_err("failed to open port %s", iface[i].name);
diff --git a/clock.h b/clock.h
index af04f49..5e94b68 100644
--- a/clock.h
+++ b/clock.h
@@ -68,10 +68,11 @@ UInteger8 clock_class(struct clock *c);
  * @param interface   An array of network interfaces.
  * @param count       The number of elements in @a interfaces.
  * @param ds          A pointer to a default data set for the clock.
+ * @param pod         A pointer to a default port data set for the clock.
  * @return            A pointer to the single global clock instance.
  */
 struct clock *clock_create(char *phc, struct interface *iface, int count,
-			   struct defaultDS *ds);
+			   struct defaultDS *ds, struct port_defaults *pod);
 
 /**
  * Obtains a clock's default data set.
diff --git a/port.c b/port.c
index e762b1f..a3195ff 100644
--- a/port.c
+++ b/port.c
@@ -34,10 +34,6 @@
 
 #define PTP_VERSION 2
 
-#define LOG_MIN_DELAY_REQ_INTERVAL      0 /* allow Delay_Req every 1 sec */
-#define LOG_ANNOUNCE_INTERVAL           1 /* every 2 sec */
-#define ANNOUNCE_RECEIPT_TIMEOUT        3 /* wait for 3 missing announce */
-#define LOG_SYNC_INTERVAL               0 /* every 1 sec */
 #define LOG_MIN_PDELAY_REQ_INTERVAL     2 /* allow PDelay_Req every 4 sec */
 
 struct port {
@@ -57,6 +53,7 @@ struct port {
 	} seqnum;
 	struct tmtab tmtab;
 	/* portDS */
+	struct port_defaults pod;
 	struct PortIdentity portIdentity;
 	enum port_state     state; /*portState*/
 	Integer8            logMinDelayReqInterval;
@@ -491,11 +488,11 @@ static int port_initialize(struct port *p)
 {
 	int fd[N_TIMER_FDS], i;
 
-	p->logMinDelayReqInterval  = LOG_MIN_DELAY_REQ_INTERVAL;
+	p->logMinDelayReqInterval  = p->pod.logMinDelayReqInterval;
 	p->peerMeanPathDelay       = 0;
-	p->logAnnounceInterval     = LOG_ANNOUNCE_INTERVAL;
-	p->announceReceiptTimeout  = ANNOUNCE_RECEIPT_TIMEOUT;
-	p->logSyncInterval         = LOG_SYNC_INTERVAL;
+	p->logAnnounceInterval     = p->pod.logAnnounceInterval;
+	p->announceReceiptTimeout  = p->pod.announceReceiptTimeout;
+	p->logSyncInterval         = p->pod.logSyncInterval;
 	p->logMinPdelayReqInterval = LOG_MIN_PDELAY_REQ_INTERVAL;
 
 	tmtab_init(&p->tmtab, 1 + p->logMinDelayReqInterval);
@@ -937,7 +934,8 @@ enum fsm_event port_event(struct port *p, int fd_index)
 	return event;
 }
 
-struct port *port_open(char *name,
+struct port *port_open(struct port_defaults *pod,
+		       char *name,
 		       enum transport_type transport,
 		       enum timestamp_type timestamping,
 		       int number,
@@ -950,6 +948,7 @@ struct port *port_open(char *name,
 
 	memset(p, 0, sizeof(*p));
 
+	p->pod = *pod;
 	p->name = name;
 	p->clock = clock;
 	p->transport = transport_find(transport);
diff --git a/port.h b/port.h
index eb4a60e..b575a3d 100644
--- a/port.h
+++ b/port.h
@@ -84,6 +84,7 @@ enum fsm_event port_event(struct port *port, int fd_index);
 
 /**
  * Open a network port.
+ * @param pod           A pointer to a default port data set for this port.
  * @param name          The name of the network interface.
  * @param transport     The network transport type to use on this port.
  * @param timestamping  The flavor of time stamping to use on this port.
@@ -92,7 +93,8 @@ enum fsm_event port_event(struct port *port, int fd_index);
  * @param clock         A pointer to the system PTP clock.
  * @return A pointer to an open port on success, or NULL otherwise.
  */
-struct port *port_open(char *name,
+struct port *port_open(struct port_defaults *pod,
+		       char *name,
 		       enum transport_type transport,
 		       enum timestamp_type timestamping,
 		       int number,
diff --git a/ptp4l.c b/ptp4l.c
index c50384b..ff7d0be 100644
--- a/ptp4l.c
+++ b/ptp4l.c
@@ -156,6 +156,11 @@ int main(int argc, char *argv[])
 	ds.clockQuality.offsetScaledLogVariance = 0xffff;
 	ds.priority2 = 128;
 
+	pod.logAnnounceInterval = 1;
+	pod.logSyncInterval = 0;
+	pod.logMinDelayReqInterval = 0;
+	pod.announceReceiptTimeout = 3;
+
 	if (generate_clock_identity(&ds.clockIdentity, iface[0].name)) {
 		fprintf(stderr, "failed to generate a clock identity\n");
 		return -1;
@@ -171,7 +176,7 @@ int main(int argc, char *argv[])
 		ds.clockQuality.clockClass = 255;
 	}
 
-	clock = clock_create(phc, iface, nports, &ds);
+	clock = clock_create(phc, iface, nports, &ds, &pod);
 	if (!clock) {
 		fprintf(stderr, "failed to create a clock\n");
 		return -1;