Internetworking - Sample Assignment

Running head: INTERNETWORKING ASSIGNMENT 2
Internetworking Assignment 2
Comparative Study of MPLS, VPLS and Metro Ethernet
Name of the Student
Name of the University
Author’s Note

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INTERNETWORKING ASSIGNMENT 2
Table of Contents
1. Introduction............................................................................................................................2
2. Operation of Technologies.....................................................................................................3
2.1. Operation of MPLS.........................................................................................................3
2.2. Operation of VPLS..........................................................................................................4
2.3. Operation of Metro Ethernet...........................................................................................6
3. Analysis..................................................................................................................................7
3.1. Multi-Protocol Label Switching (MPLS)........................................................................7
3.2. Virtual Private LAN Services (VPLS)............................................................................8
3.3. Metropolitan Ethernet (Metro Ethernet).........................................................................8
4. Discussion..............................................................................................................................9
5. Conclusion............................................................................................................................18
Recommendations....................................................................................................................18
References................................................................................................................................19

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INTERNETWORKING ASSIGNMENT 2
1. Introduction
The report is prepared for the presentation of a comparative study on the operation of
the multiprotocol label switching, virtual private LAN services and the metropolitan Ethernet.
The MPLS, VPLS and the Metro Ethernet are used for delivering a connectivity with the
different form of service level agreements and maintaining the quality of service in the
network. The metro Ethernet is an Ethernet based standard used for connecting the different
areas of the network (ComputerWeekly.com. 2018). The MPLS offers a functionality in the
network that can be installed in the network router for the implementation of virtual
switching service for a meshed connection and improvise the security of the network. The
VPLS are used for the locating the end point using the Mac address of the destination host
and it is based on Ethernet and supports the geographically distributed Ethernet network.
Thera are different enterprise that are dependent on the service providers for interconnecting
the VoIP sites. The organization outsource the network rather than developing their own
network infrastructure nut the service that are essential for the organizational network should
be identified for development of the best network solution for combining all the branches and
enabling communication between the departments of the organization.
The report is prepared for discussing the different connectivity options that are
available for the development of a network solution and connect with the different service
level agreement for maintaining the quality of service in the network.

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INTERNETWORKING ASSIGNMENT 2
2. Operation of Technologies
2.1. Operation of MPLS
Figure 1: Network Diagram for MPLS Network
The above MPLS network acts as a backbone of the network and an MPLS enabled
router is used and the main component of the network are the core LSR and the edge LSR
and it is configured with the interior gateway protocol such as OSPF for forwarding the data
packets in different areas of the network. The cost of the implementation of the MPLS is
higher than configuring a normal metro Ethernet network but there are several other
advantage for the application of the MPLS because the scalability of the network can be
improved with the application of the MPLS configuration. It can be applied for WAN routing
and keep the routing minimum between the source and the destination network. The latency
of the network can be reduces with the application of the MPLS and increasing the sensitivity
of the VOIP services.
MPLS multi-protocol label switching is a functionality of the network that can be
offered as a network service and it can be configured on a network router for an enterprise
network. It follows a different mechanism than the normal IP network by enabling a virtual
circuit service in the mesh network for improvising the security of the network solution

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INTERNETWORKING ASSIGNMENT 2
(ComputerWeekly.com. 2018). The data traffic can be assigned in the multiple levels for the
management of the quality of service and guaranteeing the performance for the network
latency, packet loss and jitter. The VOIP network is connected with the MPLS service via the
local access lines.
The MPLS are used for offering a full mesh architecture and providing the following
two benefits for the enterprise network. With the implementation of the mesh architecture the
performance of site to site can be improved and causes less congestion and loads in the local
as well as the remote networks (Bryant, Sivabalan and Soni 2016). Meshing of the network
and adding the subsequent node is an automated process for the development of the
connection less technology. The IP address are used for working with the MPLS and it can
eliminate the flooding problem which is a major concern for the Metro Ethernet.
2.2. Operation of VPLS
It is a VPN service used in the network based on Ethernet for communicating with the
different multipoint using the MPLS or IP networks. VPLS virtual private LAN service uses
the Ethernet as its backbone and used for the management of the network which is
geographically distributed. The sites located in diverse geographical location are able to share
the same Ethernet broadcast domain by interconnecting the sites using pseudo wires. The
MPLS is used as the backbone of the transportation of the data packets but the interface is
kept as a national or regional Ethernet (Mirsky et al. 2017). The location of the enterprise
network seems to be connected in the same Ethernet network but in reality the data packets
traverse uses the MPLS network of the service provider for sending and receiving the data
packets in the different branches of the enterprise. The VPLS is based on the virtual private
networking technology and enables multipoint connectivity with the network. Label
distribution protocol and border gateway protocol are used for the establishment of a full
mesh network topology. The interface used for the connection should support the 100 mbps

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INTERNETWORKING ASSIGNMENT 2
bandwidth such that the Virtual Private LAN service supports the service level agreement and
maintain a minimum speed of 1 to 100 mbps in the network.
Figure 2: Network Diagram for VPLS Network
The Mac address is used by the VPLS for locating the end point of the network and it
does not uses the IP address. The TRP header is considered for the compression of the VPLS
and it is integrated with the enterprise router facing the VPLS (Boutros et al., 2016). With the
application of the header compression the bandwidth requirement for the voice packets
reduces from 20 to 60 percentage.
For the application of the VPLS the requirement of the network should be analysed
because it works well for the small network with few number of sites. Ethernet broadcast
messages are flooded in the network and it consumes a percentage of the bandwidth and it
cannot be avoided with purchasing higher bandwidth and application of QoS. If the internet
connectivity is used for the connecting with the branch office then the VPLS connection can
perform well but is there is a requirement to scale 100 of remote sites VPLS is not the right
choice for the enterprise. In that case the configuration of the network with MPLS would be a
better choice for connecting the remote sites with the central network.