Difference between EMS and NMS (original) (raw)
Last Updated : 4 Nov, 2020
**1. Element Management System (EMS) :**Element Management System (EMS), as name suggests, is a software tool that is generally used to manage all network elements. Here element represent node i.e. device such as computer, router, etc.**2. Network Management System (NMS) :**Network Management System (NMS), as name suggest, is a software tool that is generally used to manage and control network i.e. interconnected nodes.
Difference between EMS and NMS :
| EMS | NMS |
|---|---|
| EMS usually manages single element or group of similar elements. Elements simply refers to node. | NMS usually manages more than one network i.e. multiple networks. Network simply refers to interconnected nodes. |
| EMS does not able to understand communication relationship among devices or elements. | NMS has ability to better understand communication and relationship among devices or elements. |
| EMS only have detail about complicated parts of single element. | NMS have detail about complicated parts of all elements. |
| EMS does not have any capability to manage different types of nodes or elements that have different functions, different nature. | NMS have capability to manage different types of nodes or elements that have different functions, different nature. |
| EMS can have access to complete management information content of all network elements within its domain or network. | NMS are not allowed to have access to complete management information content of all network elements within its domains or networks. |
| EMS cannot contain any NMS. | NMS can contain many EMS and can also manage them. |
| Protocols used to support management are SNMP, CORBA, XML, etc. | Protocols used to support management are SNMP, JMX, etc. |
| EMS does not monitor interconnection or connecting links between elements. | NMS monitors interconnection or connecting links between elements. |
| It does not report any fault or problems occurring at different nodes within network. | It reports all fault or problems occurring at different nodes or elements within network. |
| EMS cannot identify faults at different nodes and therefore cannot predict how fault is affecting communication link leading to non-functioning of whole network. | NMS can identify faults at different nodes and therefore can predict how fault is affecting communication link leading to non-functioning of whole network. |