diff --git a/models/chassisMap.go b/models/chassisMap.go
new file mode 100644
index 0000000..30ae8e3
--- /dev/null
+++ b/models/chassisMap.go
@@ -0,0 +1,53 @@
+/*
+   Copyright 2017 the original author or authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package models
+
+import (
+	"fmt"
+
+	"gerrit.opencord.org/abstract-olt/models/abstract"
+	"gerrit.opencord.org/abstract-olt/models/physical"
+)
+
+var chassisMap map[string]*physical.Chassis
+var abstractChassisMap map[string]*abstract.Chassis
+
+/*
+GetPhyChassisMap return the chassis map singleton
+*/
+func GetPhyChassisMap() *map[string]*physical.Chassis {
+	if chassisMap == nil {
+		fmt.Println("chassisMap was nil")
+		chassisMap = make(map[string]*physical.Chassis)
+
+	}
+	fmt.Printf("chassis map %v\n", chassisMap)
+	return &chassisMap
+}
+
+/*
+GetAbstractChassisMap return the chassis map singleton
+*/
+func GetAbstractChassisMap() *map[string]*abstract.Chassis {
+	if abstractChassisMap == nil {
+		fmt.Println("chassisMap was nil")
+		abstractChassisMap = make(map[string]*abstract.Chassis)
+
+	}
+	fmt.Printf("chassis map %v\n", chassisMap)
+	return &abstractChassisMap
+}