diff --git a/ospfd/ospf_vty.c b/ospfd/ospf_vty.c
index 631465f..e084ff3 100644
--- a/ospfd/ospf_vty.c
+++ b/ospfd/ospf_vty.c
@@ -1136,6 +1136,11 @@ DEFUN (ospf_area_vlink,
 
 	if (argv_find(argv, argc, "message-digest", &idx)) {
 		/* authentication message-digest */
+		if(FIPS_mode())
+		{
+			vty_out(vty, "FIPS mode is enabled, md5 authentication is disabled\n");
+			return CMD_WARNING_CONFIG_FAILED;
+		}
 		vl_config.auth_type = OSPF_AUTH_CRYPTOGRAPHIC;
 	} else if (argv_find(argv, argc, "null", &idx)) {
 		/* "authentication null" */
@@ -1993,6 +1998,15 @@ DEFUN (ospf_area_authentication_message_digest,
 				  ? OSPF_AUTH_NULL
 				  : OSPF_AUTH_CRYPTOGRAPHIC;
 
+	if(area->auth_type == OSPF_AUTH_CRYPTOGRAPHIC)
+	{
+		if(FIPS_mode())
+		{
+			vty_out(vty, "FIPS mode is enabled, md5 authentication is disabled\n");
+			return CMD_WARNING_CONFIG_FAILED;
+		}
+	}
+
 	return CMD_SUCCESS;
 }
 
@@ -6665,6 +6679,11 @@ DEFUN (ip_ospf_authentication_args,
 
 	/* Handle message-digest authentication */
 	if (argv[idx_encryption]->arg[0] == 'm') {
+		if(FIPS_mode())
+		{
+			vty_out(vty, "FIPS mode is enabled, md5 authentication is disabled\n");
+			return CMD_WARNING_CONFIG_FAILED;
+		}
 		SET_IF_PARAM(params, auth_type);
 		params->auth_type = OSPF_AUTH_CRYPTOGRAPHIC;
 		return CMD_SUCCESS;
@@ -6971,6 +6990,11 @@ DEFUN (ip_ospf_message_digest_key,
        "The OSPF password (key)\n"
        "Address of interface\n")
 {
+	if(FIPS_mode())
+	{
+		vty_out(vty, "FIPS mode is enabled, md5 authentication is disabled\n");
+		return CMD_WARNING_CONFIG_FAILED;
+	}
 	VTY_DECLVAR_CONTEXT(interface, ifp);
 	struct crypt_key *ck;
 	uint8_t key_id;
diff --git a/isisd/isis_circuit.c b/isisd/isis_circuit.c
index 81b4b39..cce33d9 100644
--- a/isisd/isis_circuit.c
+++ b/isisd/isis_circuit.c
@@ -1318,6 +1318,10 @@ static int isis_circuit_passwd_set(struct isis_circuit *circuit,
 		return ferr_code_bug(
 			"circuit password too long (max 254 chars)");
 
+	//When in FIPS mode, the password never gets set in MD5
+	if((passwd_type == ISIS_PASSWD_TYPE_HMAC_MD5) && FIPS_mode())
+		return ferr_cfg_invalid("FIPS mode is enabled, md5 authentication is disabled");
+
 	circuit->passwd.len = len;
 	strlcpy((char *)circuit->passwd.passwd, passwd,
 		sizeof(circuit->passwd.passwd));
diff --git a/isisd/isisd.c b/isisd/isisd.c
index 419127c..a6c36af 100644
--- a/isisd/isisd.c
+++ b/isisd/isisd.c
@@ -1638,6 +1638,10 @@ static int isis_area_passwd_set(struct isis_area *area, int level,
 		if (len > 254)
 			return -1;
 
+		//When in FIPS mode, the password never get set in MD5
+		if ((passwd_type == ISIS_PASSWD_TYPE_HMAC_MD5) && (FIPS_mode()))
+			return ferr_cfg_invalid("FIPS mode is enabled, md5 authentication is disabled");
+
 		modified.len = len;
 		strlcpy((char *)modified.passwd, passwd,
 			sizeof(modified.passwd));
diff --git a/ripd/rip_cli.c b/ripd/rip_cli.c
index 5bb81ef..02a09ef 100644
--- a/ripd/rip_cli.c
+++ b/ripd/rip_cli.c
@@ -796,6 +796,12 @@ DEFPY (ip_rip_authentication_mode,
 			value = "20";
 	}
 
+	if(strmatch(mode, "md5") && FIPS_mode())
+	{
+		vty_out(vty, "FIPS mode is enabled, md5 authentication id disabled\n");
+		return CMD_WARNING_CONFIG_FAILED;
+	}
+
 	nb_cli_enqueue_change(vty, "./authentication-scheme/mode", NB_OP_MODIFY,
 			      strmatch(mode, "md5") ? "md5" : "plain-text");
 	nb_cli_enqueue_change(vty, "./authentication-scheme/md5-auth-length",