CMTS Model update

src/CablemodemBundle/Entity/CMTSModel.php

@@ -26,7 +26,7 @@ class CMTSModel
     protected $id;
 
     /**
-     * @ORM\Column(type="string", length=100)
+     * @ORM\Column(type="string", length=100, unique=true)
      * 
      * @Assert\NotNull
      */