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Network limits per dedicated server port

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When ordering a dedicated server, limits are automatically applied to the network equipment. These limits work for both local ports and internet ports. For servers with MC-LAG, the limits apply to the entire aggregated interface (bond).

MAC address quantity limits

By default, every dedicated server is assigned a limit of 25 MAC addresses per switch port.

If the MAC address limit is exceeded on a server, you may experience partial loss of connectivity between this server and the internet or other machines in your local network.

Upon your request in a ticket, this limit can be increased to 100 MAC addresses.

A limit higher than 100 MAC addresses may be set if technically feasible; to clarify, create a ticket.

Broadcast traffic limits

For a dedicated server, there are limits on broadcast traffic (broadcast, unknown-unicast, and multicast) of 10 MB/sec per port for each individual traffic type.

All traffic exceeding the specified limit is discarded by the network equipment.

The limit is most often exceeded in the following cases:

  • if network exchange between machines involves a large volume of multicast traffic. In particular, network protocols such as OSPF, RIPv2, VRRP, and clustering solutions like Corosync often use multicast;
  • if traffic between servers is strictly one-way. In this case, network equipment may classify the traffic as unknown-unicast.