diff --git a/sa/profiles/Generic/get_fqdn.py b/sa/profiles/Generic/get_fqdn.py
new file mode 100644
index 0000000000000000000000000000000000000000..c55109ee5415ea04bdd943baa47b5297734f43ac
--- /dev/null
+++ b/sa/profiles/Generic/get_fqdn.py
@@ -0,0 +1,28 @@
+# ---------------------------------------------------------------------
+# Generic.get_fqdn
+# ---------------------------------------------------------------------
+# Copyright (C) 2007-2020 The NOC Project
+# See LICENSE for details
+# ---------------------------------------------------------------------
+
+# NOC modules
+from noc.core.script.base import BaseScript
+from noc.sa.interfaces.igetfqdn import IGetFQDN
+from noc.core.mib import mib
+
+
+class Script(BaseScript):
+    name = "Generic.get_fqdn"
+    interface = IGetFQDN
+
+    SNMP_SYSNAME_OID = mib["SNMPv2-MIB::sysName", 0]
+
+    def execute_snmp(self, **kwargs):
+        # sysName.0
+        v = self.snmp.get(self.get_sysname_oid())
+        if v:
+            return v
+        raise NotImplementedError
+
+    def get_sysname_oid(self):
+        return self.SNMP_SYSNAME_OID
diff --git a/sa/profiles/Huawei/MA5300/get_fqdn.py b/sa/profiles/Huawei/MA5300/get_fqdn.py
index 3f4da344e60d9462789323ae55f2dfa582afcdcb..2c8c1e9e822be2b281a793f2eaefd53b47feed20 100644
--- a/sa/profiles/Huawei/MA5300/get_fqdn.py
+++ b/sa/profiles/Huawei/MA5300/get_fqdn.py
@@ -1,7 +1,7 @@
 # ---------------------------------------------------------------------
 # Huawei.MA5300.get_fqdn
 # ---------------------------------------------------------------------
-# Copyright (C) 2007-2018 The NOC Project
+# Copyright (C) 2007-2020 The NOC Project
 # See LICENSE for details
 # ---------------------------------------------------------------------
 
@@ -9,7 +9,7 @@
 import re
 
 # NOC modules
-from noc.core.script.base import BaseScript
+from noc.sa.profiles.Generic.get_fqdn import Script as BaseScript
 from noc.sa.interfaces.igetfqdn import IGetFQDN
 
 
@@ -17,21 +17,11 @@ class Script(BaseScript):
     name = "Huawei.MA5300.get_fqdn"
     interface = IGetFQDN
 
-    rx_hostname = re.compile(r"hostname\s+(?P<hostname>\S+)", re.MULTILINE)
+    always_prefer = "S"
 
-    def execute_snmp(self):
-        v = self.snmp.get("1.3.6.1.2.1.1.5.0", cached=True)
-        return v
+    rx_hostname = re.compile(r"hostname\s+(?P<hostname>\S+)", re.MULTILINE)
 
     def execute_cli(self):
-        if self.has_snmp():
-            try:
-                # sysName.0
-                v = self.snmp.get("1.3.6.1.2.1.1.5.0", cached=True)
-                if v:
-                    return v
-            except self.snmp.TimeOutError:
-                pass
         v = self.cli("show all-config | include hostname")
         match = self.re_search(self.rx_hostname, v)
         if match:
diff --git a/sa/profiles/Huawei/MA5600T/get_fqdn.py b/sa/profiles/Huawei/MA5600T/get_fqdn.py
new file mode 100644
index 0000000000000000000000000000000000000000..2bcc6329b1a8356b914a609a90f7f008337eecee
--- /dev/null
+++ b/sa/profiles/Huawei/MA5600T/get_fqdn.py
@@ -0,0 +1,15 @@
+# ---------------------------------------------------------------------
+# Huawei.MA5600T.get_fqdn
+# ---------------------------------------------------------------------
+# Copyright (C) 2007-2020 The NOC Project
+# See LICENSE for details
+# ---------------------------------------------------------------------
+
+# NOC modules
+from noc.sa.profiles.Generic.get_fqdn import Script as BaseScript
+from noc.sa.interfaces.igetfqdn import IGetFQDN
+
+
+class Script(BaseScript):
+    name = "Huawei.MA5600T.get_fqdn"
+    interface = IGetFQDN
diff --git a/sa/profiles/Huawei/VRP/get_fqdn.py b/sa/profiles/Huawei/VRP/get_fqdn.py
index 8e2e8a4c90f6eb1cde322c84488bf7099bbd9e77..dffe543d3a00f2fb8dc44aa2bec5aca99cfa136a 100644
--- a/sa/profiles/Huawei/VRP/get_fqdn.py
+++ b/sa/profiles/Huawei/VRP/get_fqdn.py
@@ -1,7 +1,7 @@
 # ---------------------------------------------------------------------
 # Huawei.VRP.get_fqdn
 # ---------------------------------------------------------------------
-# Copyright (C) 2007-2016 The NOC Project
+# Copyright (C) 2007-2020 The NOC Project
 # See LICENSE for details
 # ---------------------------------------------------------------------
 
@@ -9,32 +9,21 @@
 import re
 
 # NOC modules
-from noc.core.script.base import BaseScript
+from noc.sa.profiles.Generic.get_fqdn import Script as BaseScript
 from noc.sa.interfaces.igetfqdn import IGetFQDN
 
 
 class Script(BaseScript):
     name = "Huawei.VRP.get_fqdn"
     interface = IGetFQDN
+
+    always_prefer = "S"
+
     rx_hostname = re.compile(r"^sysname\s+(?P<hostname>\S+)", re.MULTILINE)
     rx_hostname_lldp = re.compile(r"^System name\s+:\s*(?P<hostname>\S+)", re.MULTILINE)
     rx_domain_name = re.compile(r"^ip domain[ \-]name\s+(?P<domain>\S+)", re.MULTILINE)
 
-    def execute_snmp(self, **kwargs):
-        # sysName.0
-        v = self.snmp.get("1.3.6.1.2.1.1.5.0", cached=True)
-        if v:
-            return v
-
     def execute_cli(self):
-        if self.has_snmp():
-            try:
-                # sysName.0
-                v = self.snmp.get("1.3.6.1.2.1.1.5.0", cached=True)
-                if v:
-                    return v
-            except self.snmp.TimeOutError:
-                pass
         if self.has_capability("Network | LLDP"):
             try:
                 v2 = self.cli("display lldp local | include System name")
diff --git a/sa/profiles/Zyxel/DSLAM/get_fqdn.py b/sa/profiles/Zyxel/DSLAM/get_fqdn.py
new file mode 100644
index 0000000000000000000000000000000000000000..a5b6b8e9bb7f1e062f2cf773fb28458764078120
--- /dev/null
+++ b/sa/profiles/Zyxel/DSLAM/get_fqdn.py
@@ -0,0 +1,15 @@
+# ---------------------------------------------------------------------
+# Zyxel.MSAN.get_fqdn
+# ---------------------------------------------------------------------
+# Copyright (C) 2007-2020 The NOC Project
+# See LICENSE for details
+# ---------------------------------------------------------------------
+
+# NOC modules
+from noc.sa.profiles.Generic.get_fqdn import Script as BaseScript
+from noc.sa.interfaces.igetfqdn import IGetFQDN
+
+
+class Script(BaseScript):
+    name = "Zyxel.DSLAM.get_fqdn"
+    interface = IGetFQDN
diff --git a/sa/profiles/Zyxel/MSAN/get_fqdn.py b/sa/profiles/Zyxel/MSAN/get_fqdn.py
new file mode 100644
index 0000000000000000000000000000000000000000..fc170587124450093ffd7c419b75d7b3d91b5564
--- /dev/null
+++ b/sa/profiles/Zyxel/MSAN/get_fqdn.py
@@ -0,0 +1,15 @@
+# ---------------------------------------------------------------------
+# Zyxel.MSAN.get_fqdn
+# ---------------------------------------------------------------------
+# Copyright (C) 2007-2020 The NOC Project
+# See LICENSE for details
+# ---------------------------------------------------------------------
+
+# NOC modules
+from noc.sa.profiles.Generic.get_fqdn import Script as BaseScript
+from noc.sa.interfaces.igetfqdn import IGetFQDN
+
+
+class Script(BaseScript):
+    name = "Zyxel.MSAN.get_fqdn"
+    interface = IGetFQDN