diff --git a/sys/net/ieee8023ad_lacp.c b/sys/net/ieee8023ad_lacp.c
--- a/sys/net/ieee8023ad_lacp.c
+++ b/sys/net/ieee8023ad_lacp.c
@@ -1264,6 +1264,8 @@
 		case IFM_400G_DR4:
 		case IFM_400G_AUI8_AC:
 		case IFM_400G_AUI8:
+		case IFM_400G_SR8:
+		case IFM_400G_CR8:
 			key = IFM_400G_FR8;
 			break;
 		default:
diff --git a/sys/net/if_media.h b/sys/net/if_media.h
--- a/sys/net/if_media.h
+++ b/sys/net/if_media.h
@@ -260,6 +260,8 @@
 #define	IFM_40G_LM4	IFM_X(119)	/* 40GBase-LM4 */
 #define	IFM_100_BX	IFM_X(120)	/* 100Base-BX */
 #define	IFM_1000_BX	IFM_X(121)	/* 1000Base-BX */
+#define	IFM_400G_SR8	IFM_X(122)	/* 400GBase-SR8 */
+#define	IFM_400G_CR8	IFM_X(123)	/* 400GBase-CR8 */
 
 /*
  * Please update ieee8023ad_lacp.c:lacp_compose_key()
@@ -550,6 +552,8 @@
 	{ IFM_400G_DR4,	"400GBase-DR4" },				\
 	{ IFM_400G_AUI8_AC,	"400G-AUI8-AC" },			\
 	{ IFM_400G_AUI8,	"400G-AUI8" },				\
+	{ IFM_400G_SR8,	"400GBase-SR8" },				\
+	{ IFM_400G_SR8,	"400GBase-CR8" },				\
 	{ 0, NULL },							\
 }
 
@@ -897,6 +901,8 @@
 	{ IFM_ETHER | IFM_400G_DR4,	IF_Gbps(400ULL) },		\
 	{ IFM_ETHER | IFM_400G_AUI8_AC,	IF_Gbps(400ULL) },		\
 	{ IFM_ETHER | IFM_400G_AUI8,	IF_Gbps(400ULL) },		\
+	{ IFM_ETHER | IFM_400G_SR8,	IF_Gbps(400ULL) },		\
+	{ IFM_ETHER | IFM_400G_CR8,	IF_Gbps(400ULL) },		\
 									\
 	{ IFM_IEEE80211 | IFM_IEEE80211_FH1,	IF_Mbps(1) },		\
 	{ IFM_IEEE80211 | IFM_IEEE80211_FH2,	IF_Mbps(2) },		\