Network switch

What is a network switch

A switch is the central device of a local area network. It receives data frames on its ingress ports and forwards them only to the intended recipient, not to everyone like the old hub did.

In simple terms, a switch is a dispatcher at a sorting station: it reads who the packet is addressed to and sends it along the right path without clogging the other lines. This way the network works fast and without collisions.

Managed and unmanaged

An unmanaged switch simply powers on and works (for home or a small office). A managed switch allows configuring VLANs, traffic priorities, link aggregation and monitoring — a necessity for corporate networks and the government sector.

L2, L3 and how to choose

An L2 switch operates at the data link layer (by MAC addresses), an L3 switch can route between subnets (by IP). For access, take a managed L2 with PoE; for the core, an L3. Consider the port count (24/48), SFP/SFP+ uplinks and trunk port speeds.

Where "Network switch" is used

A network switch 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, network switches are supplied under Federal Law 44-FZ and 223-FZ. Items are selected by KTRU codes:

• 43291200000 — Network switches (managed L2, L2+, L3 switches)
• 43291210000 — Communication equipment expansion modules (SFP/SFP+/QSFP modules)

Fintech JSC arranges delivery with certificates of conformity, product passports, test protocols and warranty obligations. For CII circuits — additional FSTEC documents.

Detailed description and purpose

A network switch 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 network switch 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 a network switch, 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

A network switch 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 network switch 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 network switches 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 network switch 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.