--- title: "General information about the Selectel Global Router service" sidebar_label: "General information" description: "Main information about the Selectel Global Router: description, pricing, limits" sidebar_position: 1 --- import Formbricks from '@theme/MDXComponents/Formbricks' # General information about the Selectel Global Router service :::info A global router cannot be used to configure network connectivity between products in different [countries](/infrastructure/locations.mdx#country). You can only configure connectivity between products in [regions](/infrastructure/locations.mdx#region) and between regions of the same country. ::: A global router allows you to connect your infrastructure in Selectel via a private L3 network. A global router cannot be used to connect to infrastructure outside of Selectel; to do this, use [Direct Connect](/direct-connect/) or [Global Connect](/global-connect/) services, or set up a connection via the internet. With the Global Router, you can connect: * various products and services: [Dedicated Servers](/dedicated/), [Equipment Placement](/server-colocation/), [A-DC](/certified-data-center-segment/), Cloud Platform ([Cloud Servers](/cloud-servers/), [Managed Kubernetes](/managed-kubernetes/), [Managed Databases](/managed-databases/)), [S3](/s3/), [VMware-based Cloud](/public-cloud/), [Fault-tolerant Load Balancer](/load-balancer/), [File Storage](/file-storage/), [Desktop-as-a-Service (DaaS](/daas/)); * servers in different [pools](/infrastructure/locations.mdx#pool): dedicated servers, colocation servers, cloud servers, Managed Kubernetes nodes; * private networks from different accounts. For uninterrupted operation, all equipment used for the service is reserved according to the N+1 scheme. You can manage the global router in the [Control Panel](https://my.selectel.ru/network/localnetwork/l3_list), via [API](/api/global-router/) and [Terraform](/terraform/providers/). The service supports [user types and roles](/access-control/access-management.mdx). Operations records for the global router are saved in [audit logs](/audit-logs/about-audit-logs.mdx). ## Operating Principle \{#principle-of-operation} The Global Router routes traffic between connected private subnets, providing L3 network connectivity between different services and pools. A separate routing table located on multiple physical routers serves as the global router. To this end, a separate physical router is allocated and reserved in each [pool](/infrastructure/locations.mdx#pool), which exclusively serves global router networks. These physical routers are combined into a single routing domain using IP/MPLS. Network fault tolerance is ensured through equipment reservation, dynamic routing protocols, and routing redundancy. The health of the entire network does not depend on the health of any individual segment. For example, if connectivity to one of the pools is lost, the rest of the network will continue to function. Example of connecting networks to a Global Router: ![Пример подключения сетей к глобальному роутеру](https://423.selcdn.ru/kb/globalrouter-about-global-router-example-connection-LANG-THEME.png) Details and benefits of L3-level network connectivity are described in the blog article [Unifying Projects in Different Data Centers](https://selectel.ru/blog/obedinenie-proektov-v-raznyx-data-centrax/). ## Bandwidth \{#bandwidth} The base bandwidth of a global router is: * within a region — 25 Gbps; * between regions — 1 Gbps. The base bandwidth is set for the account — it is distributed among all global routers in the account, rather than being allocated to each router separately. The actual throughput depends on your server port bandwidth. The maximum supported MTU of a global router is 8,500 bytes. Bandwidth between regions can be increased. The maximum bandwidth depends on the regions connected: * between Moscow and St. Petersburg — 10 Gbps; * between Novosibirsk and Moscow — 5 Gbps; * between Novosibirsk and St. Petersburg — 5 Gbps. If you need more bandwidth than the indicated values, the increase is negotiated individually. Bandwidth within a region can also be increased. All options for increasing bandwidth within a region are negotiated individually. To receive a [cost](#price) estimate and approve an increase, [create a ticket](https://my.selectel.ru/tickets/create). ## Limits and Restrictions \{#limits} Subnets connected to the same Global Router must not overlap—they cannot contain the same IP addresses. Having the same IP addresses in subnets of the same router may cause routing issues. Limits are set for the number of Global Router objects: * in one account, you can create no more than 5 global routers (5 independent private routed networks); * for each global router, you can: * connect no more than 50 networks to the router; * connect no more than 50 subnets to the router; * create no more than 50 static routes on the router. To change limits, [create a ticket](https://my.selectel.ru/tickets/create). ## Pricing \{#price} The Selectel Global Router is provided free of charge if the aggregate bandwidth of all global routers in the account does not exceed the base bandwidth—no more than 25 Gbps within a region and no more than 1 Gbps between regions. Increases in bandwidth are billed. The increased bandwidth is allocated to the account and can be distributed among all global routers or used by a specific global router. You can view pricing for increasing bandwidth between regions on [selectel.ru](https://selectel.ru/prices/?#primary-network). Prices are listed for increasing bandwidth by 1 and 5 Gbps between a specific pair of regions for one global router. An increase within the maximum [bandwidth](#bandwidth) is calculated based on these prices. :::info For example, if you want to increase bandwidth by 7 Gbps, the cost of the increase will be calculated using the formula: price per 1 Gbps × 2 + price per 5 Gbps. ::: If an increase in inter-regional bandwidth above the maximum is required, the possibility and price are negotiated individually. If an increase in intra-regional bandwidth is required, the possibility and price are negotiated individually.