Validate VLAN tags on VLAN creation

Change-Id: Ic7a498cf6cf8c8f765691f4a495abec79bc960fb

1 files changed, 5 insertions, 0 deletions

diff --git a/db/db.py b/db/db.py
index 3e33133..b09cc0a 100644
--- a/db/db.py
+++ b/db/db.py
@@ -105,8 +105,13 @@ class VlanDB:
     #
     # Constraints:
     # Names and tags must be unique
+    # Tags must be in the range 1-4095 (802.1q spec)
+    #
     def create_vlan(self, name, tag, is_base_vlan):
 
+        if int(tag) < 1 or int(tag) > 4095:
+            raise InputError("VLAN tag %d is outside of the valid range (1-4095)" % int(tag)
+
         vlan_id = self.get_vlan_id_by_name(name)
         if vlan_id is not None:
             raise InputError("VLAN name %s is already in use" % name)