2.1 Enhanced Interior Gateway Routing Protocol EIGRP is a modified Interior Gateway Routing Protocol (IGRP) protocol, an advanced routing protocol developed
and published by Cisco in 2016. EIGRP is an advanced variant of the distance vector protocol with several
characteristics like link-state protocols. As a hybrid protocol, the Cisco core documentation states EIGRP. As distance
vector protocols create neighbour relationships as in link-state protocols, EIGRP opens its table to its environment [8].
Whenever a new router is connected to the network, three phases are followed by EIGRP-neighbor discovery, topology
exchange and router selection. To test the EIGRP routers parameter, hello packet is sent to decide if the router could
become a neighbour. The routers regularly broadcast the topology details in the topology exchange to revise the
topology changes. The topology table for selecting the path based on the cost metric is evaluated by each router. The
path with the lowest value for the cost is chosen. For wide enterprise networks, EIGRP is useful because it requires less
energy compared to that of link-state IGPs. It is one of the best available distance-vector IGPs [9]. Other than that, in
the local topology table, EIGRP maintains something like a successor route and a feasible successor route. The path by
which the packets are forwarded and have the best metric is the successor route. The possible successor route is when
the successor route goes down or has the second-best metric, the router can forward packets. Thus, this is the benefit of
EIGRP; it does not have to send hello packets to figure out another possible path once a route goes down. It just leads
to a potential successor path.
3. Proposed Network The proposed network aims to accomplish the configuration of the network using EIGRP. It is implemented in the
GNS3 platform. Uses this platform to configure the experimental setup, network configuration specification, ping test,
event log, determine the neighbours, topology table of EIGRP and the number of packets sent and received by this
protocol. Fig. 1 shows the designed topology for configuration.
A. Z. Azman et al., Journal of Electronic Voltage and Application Vol. 2 No. 1 (2021) p. 49-55
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