General information about Selectel Global Router service
The Global Router allows you to connect the infrastructure in Selectel with a private network at the L3 level. The Global Router cannot be used to connect to infrastructure outside of Selectel, for this purpose use Direct Connect or Global Connect services, or set up a connection via the Internet.
Through a global router, you can merge:
- miscellaneous products and services: Dedicated servers, Equipment placement, A-DC, Cloud Platform (Cloud Servers, Managed Kubernetes, Managed Databases), VMware based cloud, Fault-tolerant load balancer, File Storage;
- servers in different pools: dedicated servers, cloud servers, Managed Kubernetes nodes;
- private networks of different accounts.
For smooth operation, all equipment used for the service is booked on an N+1 basis.
You can work with the global router in the control panel, via API and Terraform.
User types and roles are supported in the service.
Records of global router operations are stored in audit logs.
Working principle
A global router routes traffic between private subnets connected to it, providing L3-level network connectivity between different services and different pools.
The role of the global router is performed by a separate routing table located on multiple physical routers. For this purpose, a separate physical router is allocated and reserved in each pool that serves only the global router networks. These physical routers are aggregated into a single IP/MPLS routing domain.
Network fault tolerance is provided by equipment redundancy, dynamic routing protocols, and routing redundancy in the network. The operability of the entire network does not depend on the operability of a single segment. For example, if communication with one of the pools fails, the rest of the network will continue to operate.
Example of connecting networks to a global router:
The details and benefits of network connectivity at the L3 level are described in the blog article Unifying Projects in Different Data Centers.
Throughput
The base bandwidth of a global router is 25 Gbps within a region and 1 Gbps between regions. The actual bandwidth may be less and depends on the bandwidth of your server port. The maximum supported MTU of the global router is 8,500 B.
The bandwidth between regions can be increased. The maximum bandwidth size depends on the message regions:
- between Moscow and St. Petersburg - 10 Gbit/s;
- between Novosibirsk and Moscow - 5 Gbit/s;
- between Novosibirsk and St. Petersburg - 5 Gbit/s.
If you need more bandwidth than the specified values, the increase is agreed individually.
The bandwidth within a region can also be increased. All intra-region increase options are negotiated individually.
To get a cost estimate and negotiate an increase, create a ticket.
Limits and restrictions
Subnets connected to the same global router must not overlap - they must not have the same IP addresses. Having the same IP addresses on subnets of the same router can cause routing problems.
Set limits on the number of global router objects:
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You can create a maximum of 5 global routers (5 independent private routed networks) in one account;
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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 the limits, create a ticket.
Cost
Selectel's Global Router is free of charge if basic bandwidth is used - no more than 25 Gbps within a region and no more than 1 Gbps between regions.
It pays to increase bandwidth.
To see prices for bandwidth increase between regions, visit selectel.ru. The prices for 1Gbps and 5Gbps bandwidth increase between a specific pair of regions for one global router. The increase within the maximum bandwidth is calculated based on these prices.
:::infoFor example, you want to increase bandwidth by 7 Gbps. The price of the increase will be calculated using the formula: price for 1 Gbps × 2 + price for 5 Gbps.
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If an increase in bandwidth between regions beyond the maximum bandwidth is required, the possibility and cost of the increase is negotiated individually.
If an increase in bandwidth within the region is required, the possibility and cost of the increase is negotiated individually.