The specific capacity of OSPF routes that a MikroTik RB4011 router can handle is not specified in detail in the general product documentations.

The ability to handle OSPF routes and other routing capabilities depends on several factors, including device configuration, memory and CPU usage, as well as route complexity and network topology.

Factors to Consider:

1. RB4011 Hardware:
   • CPU: The MikroTik RB4011 uses a 4 GHz 1.4-core ARM processor, which provides robust processing capacity for route management.
   • RAM: It has 1 GB of RAM, which influences how many routes and tables it can handle efficiently.
2. OSPF and Resource Usage:
   • OSPF is a link state protocol that requires more resources as the number of routes and the frequency of state changes increase.
   • Memory is used to store link states and routing tables, therefore a large network with many OSPF routes could consume a significant amount of resources.
3. Configuration Considerations:
   • The ability to handle OSPF routes also depends on how OSPF is configured on the router, including the number and size of OSPF areas and timing settings.
4. Performance in Real Environments:
   • Although the hardware may be capable theoretically, performance in real situations also depends on other factors such as network traffic, other functions that the router is performing simultaneously, and the overall stability of the network.

Recommendations:

• Test of performance: If you are planning to deploy many OSPF routes, it is advisable to perform tests in a laboratory environment to evaluate how the RB4011 handles OSPF configurations in scenarios close to real use.
• Resource Monitoring: Monitor CPU and memory usage on the RB4011 during OSPF operation to ensure the device operates within safe parameters without overloading resources.

Conclusion:

Although there is no exact figure published for the maximum number of OSPF routes that the MikroTik RB4011 can handle, its robust hardware suggests that it can support a reasonably large number of routes for small to medium-sized networks.

For larger or more complex networks, consider consulting MikroTik directly or referring to other users' experiences on professional forums for more accurate estimates based on actual usage.