VLAN

What is VLAN

VLAN (Virtual Local Area Network) is a way to mark switch ports so that devices from different groups (for example, accounting and guest Wi-Fi) end up in different logical networks, although they are physically connected to the same switch.

In simple terms, VLAN is like partitions in an open-plan office: people sit in the same room, but departments are isolated from each other and communicate only through a door (a router).

Why VLAN is needed

Isolation improves security (guest devices cannot see corporate ones), simplifies management (groups are configured logically, without re-laying cables) and reduces broadcast noise. At CII facilities and in the government sector, segmentation is a regulatory requirement.

How to configure VLAN

On a managed switch, ports are assigned to a VLAN by number (for example, VLAN 10 — management, VLAN 20 — users). The trunk port between switches is marked as trunk and carries several VLANs with 802.1Q tags. Routing between VLANs is performed by an L3 switch or a router.

Where "VLAN" is used

VLAN is in demand when building and operating network and engineering infrastructure: in data centers, communication nodes, workplaces, at critical information infrastructure (CII) facilities, in banks and state corporations, as well as in the circuits of the Ministry of Internal Affairs, the FSB and other law enforcement agencies.

What to consider when choosing

When preparing a technical specification, rely on the workload profile, required interfaces and standards, operating conditions and information security requirements, including CII protection and the use of cryptographic information protection tools. Fintech JSC helps to form correct requirements and select a solution.

Supply and KTRU codes

Within state and corporate procurement, equipment for implementing VLAN is supplied under Federal Law 44-FZ and 223-FZ. Items are selected by KTRU codes:

• 43291200000 — Managed network switches (with VLAN, 802.1Q support)
• 43291210000 — Expansion modules for configuring virtual networks

Fintech JSC helps to select equipment with the required VLAN functionality and arranges delivery under 44-FZ/223-FZ.

Detailed description and purpose

VLAN is a profile solution for equipping and developing a company's infrastructure. Depending on the task, it acts as an element of the network, a computing circuit or an engineering system, and ensures stable operation of services where continuity, data protection and regulatory compliance matter. Fintech JSC selects a VLAN configuration for the customer's specific technical specification rather than "one size fits all", so the result is a working solution rather than just a box.

Technical characteristics worth paying attention to

When forming requirements for VLAN equipment, focus on the workload profile, operating conditions and industry constraints. There are no universal "best" parameters — what matters is how well they fit your infrastructure.

• Standards and protocols. Clarify the supported standards and exchange protocols — they determine compatibility with the equipment already deployed.
• Interfaces and performance. Check the set of ports and interfaces and build in a performance margin for 2–3 years of growth.
• Operating conditions. For data centers, communication nodes and industrial sites, temperature range, dust and moisture protection and power redundancy are critical.
• Information security. For CII and government sites, information security tools, FSTEC/FSB certificates and import-substitution requirements must be considered.
• Manageability and monitoring. Centralized management and logging capabilities simplify operation and audit.

Typical use cases

VLAN is in demand in various environments: in banks and state corporations, at critical information infrastructure (CII) facilities, in data centers and communication nodes, at employees' workplaces, and in departmental networks (Ministry of Internal Affairs, FSB and other law enforcement agencies). Each scenario has its own level of protection and redundancy.

Supply and project implementation stages

1. Audit and TOR. We study the current infrastructure, regulatory requirements and budget; we form a correct technical specification.
2. Selection and design. We propose a VLAN configuration compatible with your environment.
3. Approval under 44-FZ / 223-FZ. We prepare documentation, a technical and commercial proposal and a budget estimate.
4. Supply. We assemble equipment with passports, certificates and protocols.
5. Installation and commissioning. Fintech JSC engineers perform installation, configuration and integration into the existing environment.
6. Training and acceptance. We train the customer's staff, hand over documentation and put the facility into operation.
7. Support. Warranty and service support, consultations on infrastructure development.

Requirements for the customer's infrastructure

Before starting the supply it is useful to prepare: a diagram of the current network or circuit, a list of compatible equipment, information security requirements (if any), and a placement and power supply plan. The more accurate the input data, the faster and more predictable the project.

Documents, certificates and regulatory compliance

Fintech JSC supplies VLAN equipment with a full package: passports, certificates (including FSTEC and FSB where applicable), protocols and warranty obligations. We take into account the requirements of 44-FZ and 223-FZ, import substitution and CII protection. Where needed, we select certified information security tools.

Common errors when choosing

Typical mistakes: choosing "by minimum price" without considering compatibility, ignoring information security requirements for CII, lack of performance margin and refusal of service support. They lead to rework, downtime and risks — we help to avoid them already at the TOR stage.

What is included in standard supply

Related services of Fintech JSC

Besides VLAN equipment supply, we perform design, installation, commissioning, certification and support — a turnkey project for the government sector, banks and CII.

Why Fintech JSC

34 years on the system integration market, partner status with leading vendors (including D-Link), our own service centers and warranty support. We take responsibility for the result — from design to support.