European International Journal of Multidisciplinary Research
and Management Studies
143
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TYPE
Original Research
PAGE NO.
143-148
DOI
OPEN ACCESS
SUBMITED
24 December 2024
ACCEPTED
26 January 2025
PUBLISHED
28 February 2025
VOLUME
Vol.05 Issue02 2025
COPYRIGHT
© 2025 Original content from this work may be used under the terms
of the creative commons attributes 4.0 License.
Systematizing the
Regulation of Local
Networks
Qalandarov Jamil Jalolovich
System Administrator, Digital Infrastructure Development Center, TATU
named after Muhammad al-Xorazmiy, Uzbekistan
Akmalov Elyor Ilxomovich
IT Developer, Director of Active Service LLC, Uzbekistan
Omonov Zokir Hojiboy o`g`li
Network Administrator, Digital Infrastructure Development Center, TATU
named after Muhammad al-Xorazmiy, Uzbekistan
Abstract:
In this article, when the LLDP and SNMP
protocols are used together, they provide network
engineers with a powerful set of tools. Data collection
from devices via SNMP enables continuous monitoring
of the network's performance, while LLDP automatically
identifies the network topology and facilitates
understanding of the connections between network
devices.
The combined use of these protocols allows
administrators to quickly and accurately assess the
network's status, prevent potential issues, or resolve
them promptly. To enhance network efficiency and
reduce operational problems, it is crucial to use these
protocols properly. The article outlines effective
methods for utilizing these protocols.
Keywords:
LLDP, SNMP, local network, LAN, SNMP,
CDP, EDP, FDP, LLTD.
Introduction:
The Relevance of Regulating and
Systematizing Local Networks
The relevance of regulating and systematizing local
networks is very important in today's era of advancing
technology. Local networks (Local Area Networks, LAN)
are systems that connect computers and other devices
located within a limited area, such as an office building,
manufacturing facility, or educational institution. By
properly regulating and systematizing networks, it is
possible to prevent data theft and misuse.
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Implementing security policies and technologies, along
with measures such as encryption and access control
systems, is essential.
Systematizing local networks facilitates the seamless
exchange of data between various devices and
applications, which in turn helps to optimize business
processes and enhance operational efficiency. Overall,
the regulation and systematization of local networks
are crucial for improving the effectiveness of data
integration and management processes.
This is particularly an important issue for large
organizations and corporations, as all these measures
help manage data effectively and enhance production
efficiency. Data integration enables the merging of
data obtained from various sources and its utilization
in a common format. This process facilitates data
exchange among numerous systems and platforms
while ensuring data consistency within the
organization. Data management involves optimizing
the processes of storing, regulating, analyzing, and
using data. This allows organizations to manage data
efficiently, ensure its security, and control access to it
[2]. By properly organizing and regularly updating the
system, the reliability and stability of the network are
ensured. This, in turn, prevents downtime and
guarantees the continuous operation of the system.
Network reliability refers to the network's ability to
transmit data accurately and error-free. Reliable local
networks must have the ability to withstand
unexpected malfunctions and recover quickly from
them. Network redundancy includes having backup
network devices and communication channels, such as
using two servers or two internet connections.
Monitoring and diagnostics ensure the reliable
operation of the network by continuously tracking its
status, promptly identifying issues, regularly creating
backups of critical information, and securely storing
them. Proper organization of the network allows for
efficient management of servers, storage devices, and
other resources. This helps in optimizing resource
usage and improving operational efficiency. The issue
of organizing and structuring local networks is
particularly important at the corporate and
organizational levels. It is one of the key factors in
ensuring the efficient allocation of resources and the
stable operation of the network. Optimal resource
distribution
—
such as effectively sharing network
resources like speed, memory, and storage capacity
—
not only enhances system performance but also
enables better service delivery to users. Organizing
local networks also aids in effectively implementing
security policies and protecting data. Efficient sharing
of network resources facilitates scalability, meaning it
becomes easier to expand the network or connect new
devices. Properly designing the network simplifies
future expansion and modernization. The benefits of
organizing and structuring local networks are primarily
associated with two key aspects: scalability (the ability
to increase capacity) and flexibility (the ability to adapt
to different situations). These two aspects are
particularly important in today's rapidly changing
technological environment. Scalability refers to the
network's ability to adapt to growth. This includes tasks
such as adding new devices to the network, supporting
a larger number of users, and enhancing the capability
to process and manage data. By ensuring scalability and
flexibility, organizations can effectively respond to
evolving demands and technological advancements
without significant disruptions to their existing
infrastructure. Considering scalability in organizing local
networks provides the opportunity to adapt the
network to future growth and technological
advancements. Flexibility , on the other hand, refers to
the network's ability to work with various technologies,
software, and operating systems. This includes adapting
the network to use new software or accommodate
varying workloads. Flexible networks also simplify
integration between different technologies and
platforms, which helps organizations efficiently manage
their business processes. In today’s dynamic
environment, having a network that is both scalable and
flexible ensures that businesses can seamlessly
incorporate new solutions, adjust to changing demands,
and maintain high performance without significant
disruptions. This approach not only enhances
operational efficiency but also prepares the
organization for long-term success in an ever-evolving
technological landscape.
The process of organizing and structuring local networks
plays a crucial role in enhancing the efficiency of
businesses' and organizations' IT infrastructure. While
organizing and structuring local networks can be a multi-
step and complex process, one of its key components is
identifying needs. This primarily involves improving
network efficiency, ensuring security, and considering
future expansion possibilities. By properly planning and
implementing this process, organizations can achieve a
more reliable, scalable, and secure IT environment. This
not only helps meet current demands but also prepares
the
infrastructure
for
future
technological
advancements and business growth, ensuring long-term
effectiveness and adaptability. Assessing the current
state involves analyzing the existing network
infrastructure, including hardware and software, as well
as the network's current performance metrics.
Identifying user needs is another critical part of this
process, which focuses on understanding the
requirements and expectations of network users
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(employees, customers, partners). This helps
anticipate network loads and prevent unexpected
outages. Determining the requirements for hardware
and software involves specifying the needs for network
devices such as routers, switches, firewalls, and
software (operating systems, network management
tools). This step helps avoid the use of inappropriate or
inadequate equipment that does not meet network
demands. Selecting the right topology plays a crucial
role in organizing and structuring local networks. The
choice of topology significantly impacts network
performance,
reliability,
and
scalability.
An
appropriate topology ensures efficient data flow,
minimizes potential bottlenecks, and enhances overall
network efficiency. By carefully evaluating these
factors, organizations can design a network that aligns
with their current and future needs while maintaining
stability and security.
Topology is the scheme of physical or logical
connections between devices in a network. The most
commonly used topologies for local networks include
star, ring, bus, mesh, and hybrid topologies. In the star
topology , all devices are connected to a central point
(for example, a switch or router). This topology is easy
to manage because each device is only connected to
the central point. If one device fails, it does not affect
the operation of other devices. However, if the central
device fails, the entire network will stop functioning.
In the ring topology, each device is directly connected
to two neighboring devices, forming a ring.
Data is sent in one direction around a loop in a ring
topology. This topology is simple and reliable, but if
one device in the ring fails, the entire network may
stop functioning. In a bus topology, all devices are
connected to a single shared transmission channel.
Data is broadcast through this channel. The advantage
of this topology is that new devices can be added
easily. However, if there is a problem with the channel,
it could affect the entire network. In a mesh topology,
each device is connected directly to one or several
other devices. This topology provides the highest level
of reliability and flexibility.
Network Protocols in Regulating Local Networks
In managing and monitoring local networks, protocols
such as SNMP (Simple Network Management Protocol)
and LLDP (Link Layer Discovery Protocol) play a crucial
role. These protocols are essential for overseeing the
network and monitoring its operational status. SNMP
is used for data exchange among network devices (for
example, routers, switches, servers, and workstations).
It allows for collecting information for network
management and sending commands to devices. With
SNMP, administrators can monitor the performance of
devices on the network to ensure they operate correctly
and optimally. LLDP is an open standard used for data
exchange between network devices. With this protocol,
network devices (such as routers, bridges, switches,
servers, phones, and other devices) can identify each
other and exchange information about the network
topology. LLDP helps administrators quickly and
efficiently describe the network infrastructure, thereby
facilitating network management and troubleshooting.
The main functions of LLDP are as follows:
Device detection
: Using LLDP, network devices can
automatically recognize each other. This is especially
useful for identifying the location of devices in large and
complex networks.
Information haring
: Using LLDP, configuration data
—
including s device name, port identifier, and device
types
—
is exchanged among devices.
Network
diagnostics
:
LLDP
provides
network
administrators with precise information about the
status of devices and their interconnections, thereby
facilitating network management as well as the
detection and resolution of potential issues. LLDP
operates in two main modes: transmitter and receiver.
Transmitter mode
: In transmitter mode, the device
operating in this mode regularly sends its own data
—
including identification information, port information,
and capabilities
—
via LLDP packets to other devices. This
information is used to detect newly connected devices
in other parts of the network and to understand their
configuration.
Receiver mode
: In receiver mode, a device operating in
this mode receives LLDP packets from other devices and
analyzes them. Based on the received data, the device
can build the network topology and establish
communication with other devices. LLDP can operate in
a bidirectional mode, meaning that a device can
function as both sender and receiver simultaneously.
This enables effective management and monitoring of a
scalable network.
LLDP Packet Structure
LLDP packets consist of TLV (Type, Length, Value) blocks,
which serve as the primary mechanism for carrying
protocol data. Each TLV contains three main
components:
1.
Type: The type of the TLV. This part indicates
what kind of data it contains, such as a device identifier,
port identifier, device capabilities, etc.
2.
Length: The length of the Value part in bytes. It
shows the size of the data block.
3.
Value: The data itself. Depending on the type of
information, this part can include various data such as
the device name, physical address, port name, etc.
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LLDP packets are sent at regular intervals, allowing for
the discovery of newly connected devices and the
determination of the network topology.
LLDP Packet Blocks
LLDP packets primarily consist of the following TLV
blocks:
❖
Chassis ID TLV:
The general identifier of the device.
This information enables the device to be uniquely
identified on the network.
❖
Port ID TLV:
The general identifier of the port. This
information is used to uniquely identify the port.
❖
TTL TLV:
The packet's "time-to-live." After this time
elapses, the information is considered outdated.
❖
Port Description TLV:
A description of the port.
This information provides details about the port’s
characteristics and other important data.
❖
System Name TLV:
The system's name. This is the
general name or description of the device.
❖
System Description TLV:
A detailed description of
the system. This includes, for example,
information about the software in use and
hardware characteristics.
❖
System Capabilities TLV:
The capabilities of the
system. This information indicates what the device
is capable of, such as functioning as a router or a
switch.
❖
[1,4].
Below is an example of LLDP packets between two
devices in JSON format (Figure 1). In this example, you
can observe the connection between two switches, SW1
and SW2. Each switch sends its own LLDP packet, which
contains the device identifier, port identifier, TTL, port
and system description, as well as the system
capabilities. These JSON examples demonstrate the
LLDP protocol’s ability to exchange data and its
effectiveness in identifying interconnections between
network devices. Additionally, there are software
libraries available that provide high-level support for
this protocol, which simplify the work of programmers
and network administrators. Below is an automatic
diagram of the network device map created using a
python3 program with the LLDP protocol[5].
Figure 1. LLDP packets between two devices in JSON format.
Bu
pratokol
yordamida
TATUda
mavjud
kommutatorlarning
xaritasi
avtomatik
xolda
yaratilgan. LLDP protokol yordamida tartibga
solinmagan va juda ko‘p mexnat talab qilinadigan
tarmoqlarni
tartiblashtirish,
tarmoq
xaritalarini
shakllantirish, tizimlashtirish uchun juda katta amaliy
yordam berishimi mumkin. Shuningdek. bazi ishlab
chiqaruvchilar t
omonidan LLDP protokoliga o‘xshash
bazi protokollar yaratilgan ularni bazilarini ko‘rib
o‘tamiz.
• Cisco Discovery Protocol (CDP): A protocol developed
by Cisco and primarily used on Cisco devices. CDP is also
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European International Journal of Multidisciplinary Research and Management Studies
used to discover network devices and obtain
information about them, but it is limited to Cisco
devices only. This protocol, like LLDP, transmits
information in TLV format.
• Extreme Discovery Protocol (EDP): A protocol
developed by Extreme Networks, designed specifically
for the company’s devices.
It is similar to CDP, but it
can only operate with Extreme devices.
• Foundry Discovery Protocol (FDP): A protocol
developed by Foundry Networks (currently under
Brocade Communications Systems) and used for its
devices.
• Link Layer Topology Discovery (L
LTD): A protocol
developed by Microsoft for the Windows operating
system. It is primarily used in home and small office
networks.
• Link Layer Topology Discovery (LLTD): A protocol
developed by Microsoft for the Windows operating
system. It is primarily used in home and small office
networks.
Optical Communication Systems, Telecommunications
Networks and Switching Systems
Figure 2. Automatically creating a network map using the LLDP protocol
LLDP is an open protocol standardized by IEEE that can
be used on devices from various manufacturers. CDP,
on the other hand, is designed for Cisco devices and
may not be compatible with other brands. LLDP is
developed in accordance with international standards,
ensuring compatibility with a wider range of devices.
Other manufacturers have their own proprietary
protocols, such as EDP and FDP, which offer optimized
functions and features for their devices. However, the
drawback of these protocols is that they only work with
their own manufacturers’ devices and are not mutually
compatible [1,3].
CONCLUSION
Data security can be ensured through the effective
regulation of local networks. This is particularly
necessary to protect against cyberattacks and to
prevent unauthorized access to data. Through
systematized networks, work can be managed
effectively and resources can be utilized efficiently,
which helps to increase work productivity and enhance
the overall performance of the organization.
Regulating local networks also enables the monitoring
and management of network traffic. In turn, this
contributes to the reliable operation of the network and
the optimal allocation of resources. Systematized
networks allow for the delivery of high-quality services
to users, thereby improving their work experience and
reinforcing trust in the organization.
Moreover, by regulating and systematizing local
networks, it becomes possible to identify technical
issues and resolve them quickly, ensuring the stable
operation of the network. In conclusion, regulating and
systematizing local networks offers a range of significant
benefits, including ensuring data security, enhancing
work efficiency, controlling traffic, improving service
quality for users, and promptly addressing technical
problems.
REFERENCES
IEEE 802.3 Frame Expansion Study Group, Ottawa, Sept
30, 2004
Gary A. Donahue. Network Warrior, Second Edition,
2011, O’Reilly Media, Inc., 1005 Gravenstein Highway
North, Sebastopol, CA 95472, pp.759.
https://www.geeksforgeeks.org/link-layer-discovery-
protocol-lldp/
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https://learningnetwork.cisco.com/s/article/link-
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https://codereview.stackexchange.com/questions/23
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