Ethernet routing switch 4000 series or (ERS 4000) in

computer networking A computer network is a set of computers sharing resources located on or provided by network nodes. The computers use common communication protocols over digital interconnections to communicate with each other. These interconnections are ma ...

terms are stackable

layer-3 In the seven-layer OSI model of computer networking, the network layer is layer 3. The network layer is responsible for packet forwarding including routing through intermediate routers. Functions The network layer provides the means of transf ...

( routers) and

layer-2 The data link layer, or layer 2, is the second layer of the seven-layer OSI model of computer networking. This layer is the protocol layer that transfers data between nodes on a network segment across the physical layer. The data link layer p ...

(

switches In electrical engineering, a switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit, interrupting the electric current or diverting it from one conductor to another. The most common type of ...

) designed and manufactured by

Avaya Avaya Holdings Corp., often shortened to Avaya (), is an American multinational technology company headquartered in Durham, North Carolina, that provides cloud communications and workstream collaboration services. The company's platform includ ...

for

Ethernet Ethernet () is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 198 ...

devices. The ERS 4000 series consists of two major groups of devices, the ERS 4500 models and the ERS 4800 models.

History

The first set of ERS 4500 series became available in February 2007 from

Nortel Nortel Networks Corporation (Nortel), formerly Northern Telecom Limited, was a Canadian multinational telecommunications and data networking equipment manufacturer headquartered in Ottawa, Ontario, Canada. It was founded in Montreal, Quebec, ...

with the release of software version 5.0. The switches are 1U high and five models were originally available which consisted of the; 4526FX, 4550T, 4550T-PWR, 4548GT and 4548GT-PWR. In 2008 a detailed evaluation of the systems was performed by Tolly. In 2009 The

United States Department of Defense The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national secu ...

performed extensive testing of the ERS 4500 series and approved and certified these for use in the Assured Services Voice Application Local Area Network (ASVALAN) systems of the DoD. In March 2011 the

Australian Department of Defense Defence Australia is a department of the Government of Australia charged with the responsibility to defend Australia and its national interests. Along with the Australian Defence Force (ADF), it forms part of the Australian Defence Organisati ...

installed the ERS 4500 series with other Avaya data equipment to support their over 90,000 users. In December 2011 this system completed evaluation and certification by the U.S. Joint Interoperability Test Command (JITC) testing center for use in the

as an Assured Services Local Area Network (ASLAN).

References

External links

Avaya Ethernet Routing Switch 4800 Series Fact Sheet
{{Avaya ERS 4000 Network architecture