Network Infrastructure

COSMODATA designs and implements comprehensive Network Infrastructure solutions for businesses that need stable, secure and scalable connectivity.

A proper network architecture directly affects:

• application performance
• Internet operation
• access to servers and cloud services
• Wi-Fi
• telephony
• CCTV
• security
• availability of business systems

For this reason, the network should not be treated as a set of switches and cables.

It must be designed as the core infrastructure on which the entire IT environment rests.

Network Study & Design

Every project begins with a survey of the actual needs.

We assess:

• number of users
• number of devices
• application type
• server infrastructure
• cloud services
• Internet requirements
• Wi-Fi requirements
• VoIP / PBX
• CCTV
• remote access
• branch connectivity
• security requirements
• future growth

The design takes into account not only the current situation but also the organization's next phase of growth.

Network Assessment

In existing installations, we can carry out a technical assessment of the network.

The following are examined:

• switches
• routers
• firewalls
• uplinks
• cabling
• VLANs
• Wi-Fi
• Internet connections
• IP addressing
• bottlenecks
• single points of failure
• outdated equipment

so that problems are identified and an organized upgrade can be planned.

Switching Infrastructure

Switches are a core component of the corporate LAN.

We can design and implement:

• access switches
• core switches
• aggregation switches
• PoE switches
• managed switches
• stackable switches
• redundant switching

based on performance and availability requirements.

Core & Access Architecture

In larger environments, the network architecture can be organized in distinct layers.

Indicatively:

or in more compact environments:

A proper architecture facilitates:

• troubleshooting
• scalability
• redundancy
• segmentation
• performance management

VLAN Segmentation

Logically dividing the network into VLANs increases both organization and security.

Separate networks can be created for:

• users
• servers
• voice
• printers
• CCTV
• IoT
• guest Wi-Fi
• management
• access control

so that different types of devices do not communicate with each other in an uncontrolled way.

Network Security

Security must be built into the network design.

The following can be applied:

• network segmentation
• ACLs
• firewall policies
• secure management
• isolated guest networks
• restricted device communication
• VPN
• access control
• logging

so that the infrastructure supports the principle of least privilege.

Firewall Infrastructure

The firewall is a critical control point between the corporate network and external networks.

The solutions can include:

• Internet security
• NAT
• VPN
• intrusion prevention
• web filtering
• application control
• geo restrictions
• security policies
• traffic logging

with proper design so that security does not create unnecessary problems in daily operations.

Internet Connectivity

An Internet connection is now a business-critical service.

We can design:

• primary Internet
• secondary Internet
• dual WAN
• automatic failover
• 4G / 5G backup
• load balancing
• dedicated links
• business broadband

based on the required level of availability.

Dual WAN & Failover

For businesses that cannot depend on a single connection, two different providers can be used.

The logic can be:

so that a telecom provider failure does not cause a complete outage of operations.

WAN Infrastructure

For businesses with multiple sites, we can design connectivity between:

• of head offices
• of branches
• of stores
• of hotels
• of warehouses
• remote offices

with the goal of secure and stable communication between installations.

Site-to-Site VPN

The different sites can be connected through secure VPN tunnels.

This way, users can have access to:

• central servers
• ERP
• shared files
• PBX
• internal applications
• monitoring
• management systems

as if they were in the same corporate environment.

Remote Access VPN

Remote users can gain secure access to internal services.

Access can be designed with:

• VPN
• MFA
• role-based access
• restricted network access
• logging

so that the user sees only the systems they actually need.

SD-WAN

In more complex multi-site environments, the use of SD-WAN can be evaluated.

It can help with:

• centralized management
• multiple Internet connections
• application-aware routing
• automatic failover
• site connectivity
• simplified branch management

depending on the requirements and architecture of the business.

Wi-Fi Infrastructure

The wireless network must be part of the overall network design.

The installation can include:

• Access Points
• controller
• corporate SSID
• guest SSID
• VLAN integration
• roaming
• PoE
• coverage planning
• capacity planning

so that Wi-Fi operates as true corporate infrastructure and not as mere Internet access.

PoE Infrastructure

Power over Ethernet allows many devices to be powered through the network cable.

It can be used for:

• Access Points
• IP Phones
• IP Cameras
• Door Controllers
• IoT Devices
• Meeting Room Equipment

Switch selection must take the total PoE power budget into account.

Fiber Backbone

For high speeds, longer distances, or connections between racks and floors, optical fiber can be used.

Indicative uses:

• core uplinks
• rack-to-rack
• floor-to-floor
• building-to-building
• server room backbone

with the ability to support high bandwidth requirements.

Redundant Uplinks

In critical installations, more than one path can be designed between key network components.

The following can be used:

• dual uplinks
• link aggregation
• redundant core links
• redundant fiber paths

so that an isolated failure does not cause the loss of an entire segment of the network.

High Availability

For high-demand environments, redundant architectures can be designed for:

• firewalls
• core switches
• Internet connections
• uplinks
• power supplies

with the goal of reducing single points of failure.

Network Performance

A proper architecture must ensure that the network is not a bottleneck.

The following are assessed:

• bandwidth
• latency
• packet loss
• uplink capacity
• switch utilization
• Internet usage
• application requirements

so that critical applications run properly.

Quality of Service

In environments with VoIP, video conferencing or critical applications, Quality of Service (QoS) may be required.

Priorities can be assigned to:

• VoIP
• PBX
• Microsoft Teams
• video
• critical applications

so that increased data traffic does not degrade critical services.

IP Addressing & Network Planning

A proper IP architecture simplifies management and growth.

The following can be organized:

• subnets
• VLAN addressing
• DHCP ranges
• static assignments
• network reservations
• management networks

with a unified and documented design.

DHCP & DNS Infrastructure

Services such as DHCP and DNS are essential for the proper operation of the network.

We can organize:

• IP assignment
• DHCP scopes
• reservations
• internal DNS
• forwarders
• redundancy where required

so that devices connect and communicate properly.

Network Management

Active network infrastructure must be centrally manageable.

The following can be organized:

• device management
• firmware
• configuration
• port management
• VLANs
• backups configuration
• user access
• alerts

so that changes are made in a controlled manner.

Network Monitoring

Continuous monitoring helps detect problems early.

The following can be monitored:

• switch availability
• firewall availability
• WAN status
• uplinks
• interface errors
• bandwidth
• packet loss
• latency
• device health

so that support becomes more proactive.

Alerting

When a significant problem occurs, alerts can be created for:

• device offline
• WAN failure
• high utilization
• uplink failure
• interface errors
• critical temperature
• power issue

so that the technical team is notified immediately.

Network Documentation

Every professional network must be documented.

The following can be delivered:

• network diagrams
• IP addressing plan
• VLAN documentation
• switch inventory
• firewall information
• WAN links
• rack diagrams
• uplink mapping
• device naming

so that the infrastructure can be properly supported in the future.

Configuration Backup

The configurations of core network devices must be protected.

Configuration backups can be maintained for:

• switches
• firewalls
• routers
• controllers

so that a fault or incorrect change does not require a complete reconfiguration from scratch.

Naming Standards

In larger networks, proper naming conventions help significantly.

Standards can be applied for:

• switches
• access points
• firewalls
• racks
• locations
• VLANs
• ports

so that the infrastructure remains understandable as it grows.

Multi-Site Network Standards

For businesses with many sites, common network standards can be created.

Every installation can follow a common logic for:

• IP ranges
• VLANs
• device naming
• Wi-Fi
• firewalls
• switch configurations
• monitoring

so that management is simpler and more predictable.

Branch Infrastructure

For smaller branches, standardized network deployments can be designed.

Indicatively:

with central management and monitoring.

Server Room Networking

In server rooms we can design:

• core switching
• server connectivity
• storage networking
• redundant uplinks
• management networks
• fiber connections
• rack interconnections

with the goal of high performance and availability.

Virtualization Networking

In virtualized environments, special network settings may be required for:

• VMware
• Hyper-V
• virtual switches
• storage networks
• management networks
• VM traffic
• backup networks

so that different workloads run correctly and securely.

Storage Networking

In environments with NAS or SAN, suitable networks can be designed for:

• storage traffic
• backup
• replication
• virtualization

with appropriate bandwidth and separation from everyday user traffic.

CCTV Network Infrastructure

IP CCTV systems can create significant network load.

For this reason, the following may be required:

• dedicated VLAN
• PoE switching
• bandwidth planning
• NVR connectivity
• retention planning
• isolated access

so that CCTV does not affect the corporate network.

Voice Network

IP telephony can be organized on a separate voice network.

The following can be applied:

• Voice VLAN
• QoS
• PoE
• PBX connectivity
• SIP security
• routing

so that telephony remains stable and predictable.

Guest Networks

Guest Wi-Fi must be fully separated from the corporate LAN.

The following can be applied:

• dedicated VLAN
• Internet-only access
• client isolation
• bandwidth limits
• captive portal

so that visitors have access without exposing corporate systems.

IoT & Smart Devices

Modern installations include more and more IoT devices.

Indicatively:

• smart TVs
• sensors
• access control
• building systems
• printers
• meeting room devices

These devices must be placed in controlled network segments and not left uncontrolled on the corporate LAN.

Access Control Infrastructure

Physical access systems can also be integrated into the network infrastructure.

The following can be supported:

• door controllers
• readers
• management servers
• PoE devices
• isolated VLANs

with proper security and connectivity.

Cloud Connectivity

Cloud services increase the importance of the Internet and the WAN.

We can design the network so that it effectively supports:

• Microsoft 365
• Azure
• cloud applications
• SaaS
• cloud backup
• remote services

with proper bandwidth and redundancy.

Network Modernization

Older infrastructures can be upgraded gradually.

The process can include:

• replacement of unmanaged switches
• Gigabit / Multi-Gigabit upgrades
• fiber uplinks
• new firewall
• VLAN design
• Wi-Fi modernization
• redundancy
• monitoring

without necessarily replacing the entire infrastructure at once.

Legacy Network Cleanup

In networks that have evolved without organized planning, we often find:

• unknown switches
• unmanaged devices
• undocumented links
• different IP schemes
• abandoned cables
• loop risks
• unsupported hardware

We can carry out a survey and organized clean-up of the infrastructure.

Office Relocation

In a company relocation, the network infrastructure must be ready before users are installed.

We can organize:

• network design
• Internet
• firewall
• switching
• Wi-Fi
• cabling
• racks
• PBX
• printers
• servers

so that the transition takes place with the least possible business disruption.

New Installations

In new buildings or offices, we can design the complete network environment from the outset.

From:

Structured Cabling

up to:

so that all components follow a common architecture.

Hotels & Hospitality Networks

In hotel environments, the network may cover:

• Guest Wi-Fi
• Corporate Network
• Reception
• PMS
• POS
• PBX
• CCTV
• IPTV
• Back Office
• Meeting Rooms
• Management

with strict separation between different services and users.

Retail & Branch Networks

For stores and branches, networks can be designed for:

• POS
• ERP
• Wi-Fi
• CCTV
• PBX
• printers
• digital signage
• central connectivity

with common standards and remote management.

Warehouses

In warehouses and logistics environments, the requirements may include:

• Wi-Fi coverage
• handheld terminals
• scanners
• CCTV
• access control
• warehouse applications
• long-distance network links

with emphasis on stable connectivity in large spaces.

Testing & Commissioning

After implementation, checks are carried out to confirm that the network operates as designed.

The following can be verified:

• Internet
• VLAN communication
• DHCP
• DNS
• VPN
• failover
• Wi-Fi
• routing
• firewall rules
• uplinks
• device availability

before final delivery.

Handover

The project can be delivered with an organized handover that includes:

• topology
• diagrams
• configurations
• IP plan
• device inventory
• credentials procedure
• support information
• test results

so that the customer has a complete picture of the infrastructure.

From the Network to Business Services

The network is not the end goal.

It is the medium that allows the following to operate:

For this reason, every network project must be designed based on the services it will support.

The best network infrastructure is created when the different layers are designed together.

COSMODATA can undertake:

as a single project.

This avoids incompatibilities and piecemeal solutions.

Network infrastructure is a core part of cybersecurity.

Segmentation, firewalls, access control, secure remote access and monitoring can be integrated from the design stage.

Security is not added afterwards.

It is designed within the network.

For critical environments, the network architecture can be designed with redundancy.

Indicatively:

• dual WAN
• redundant firewalls
• redundant core switches
• dual uplinks
• secondary connectivity
• 4G / 5G backup

so that a simple failure does not cause a complete outage.

From Project to Managed Network

After handover, the infrastructure can be included in Managed IT services.

This creates continuity:

and the network remains under continuous technical supervision.

Why Professional Network Infrastructure

A network that does not restrict the business

COSMODATA treats Network Infrastructure as the fundamental foundation of the overall IT architecture.

From a small corporate LAN to a complex multi-site environment with redundancy, firewalls, fiber backbone, Wi-Fi, and secure WAN connectivity, we design solutions that can support the business today and evolve with it tomorrow.

Because a good network should not be noticed by the user.

It simply has to be fast, stable, secure and available when the business needs it.

Connect. Secure. Scale. Perform.