Computer network high availability

High availability of services in computer networks

Nowadays, even a temporary lack of access to company resources, e-mail, ERP systems or the Internet itself can cause financial losses for the company.

To counteract such situations, there are mechanisms that ensure high availability of services in computer networks, enabling the achievement of work continuity in the event of failure of individual elements of the IT system.

Exanet implements High Availability solutions

•   High-performance and reliable access to the Internet thanks to the diversification of Internet connections from different providers, equipped with mechanisms of automatic switching of services between operating links.
•   Continuous operation of network devices providing access to the LAN network thanks to solutions enabling automatic switching to backup equipment in the event of a primary failure (HSRP mechanisms – Hot Standby Router Protocol, systems operating in Active-Active or Active-Standby mode).
•   Safe and efficient contact with the Internet, ensuring the continuity of services, even in the event of failure of one of the links, thanks to the implementation of BGP routing protocol (Border Gateway Protocol).
•   Stable operation of the client’s local network, thanks to solutions ensuring the multiplication of connections between network infrastructure elements.
•   Continuous and efficient access to services supported by server systems, thanks to the multiplication of connections between servers and the computer network and the diversification of connections between various network devices (NIC teaming).
•   Increasing the security of network operation, thanks to mechanisms that automatically block unwanted services, applications or certain types of computer viruses / attacks.
•   Monitoring the status of services and their availability.

Advantages of high availability of computer networks

•   Elimination of the possibility of a computer network outage.
•   No downtime in the functioning of the company caused by a non-working computer network.
•   Increase in IT security due to the implementation of professional devices and solutions in the network infrastructure.
•   Increase in the IT system efficiency due to the improvement of the transmission speed parameters in the LAN.
•   Saving resources related to IT infrastructure support services thanks to the use of managed network devices.
•   Possibility of strengthening business continuity by means of service contracts available for Cisco devices.

Redundancy in HA networks

When preparing High Availability solutions in computer networks, we distinguish the main areas in which we eliminate the dependence of network continuity on single points of failure.

•   Edge device redundancy (router) with double physical connection and the use of Active Passive mode.
•   The redundancy of the core switch to which the servers and access switches are connected. Use of Active Active mode and LACP (Link Agregation Control Protocol).
•   WLAN controller redundancy (WLC). Use of the Active Passive mode. There is no physical connection between the duplicate WLCs. Appropriate configuration of Access Points allows for automatic switching to the second controller in the event of failure of the first one.
•   Internet access redundancy (two operators) using BGP (Border Gateway Protocol).

Exanet is a Cisco partner

The status of a Cisco partner is a confirmation of the competence of Exanet engineers and many years of experience in implementing HA solutions in computer networks for companies.

Such a distinction for Exanet is a guarantee for our clients of the highest quality of services, excellent practical preparation, and following the best practice recommendations of the most important manufacturer of hardware and network solutions in the world.

Benefits of working with Exanet

•   We have experience gained in numerous implementations of high availability computer network solutions for companies from all over Poland.
•   In the Exanet team we have engineers with certificates confirming very high competences (eg CCNA).
•   As a Cisco partner, we can offer professional hardware solutions with manufacturer support.
•   We implement HA on all levels (router, core switch, WLC, internet connection).
•   We offer comprehensive service. We design solutions, provide equipment, configure and test.
•   We approach each project individually. We develop solutions tailored to the client’s needs.
•   We offer the possibility of permanent cooperation in the field of network infrastructure management.
•   We integrate computer networks with server solutions in the IT infrastructure. We have an experienced IT system administrators department in our team.

Our offer also includes