Abstract: Embodiments of the disclosure provide a method, an apparatus, a device, and a readable medium for network simulation. The method includes: running a simulation network corresponding to a backbone network and a data center network in a simulation test environment, where the simulation network includes simulation nodes corresponding to a full set of devices in the backbone network and simulation nodes corresponding to a part of devices in the data center network, and the part of devices include a full set of core devices in a core-level network of the data center network and a part of basic devices sampled from a basic-level network; receiving a test request for the data center network, where the test request includes change command for one or more devices; adjusting the simulation network based on the test request; and performing network simulation on the adjusted simulation network in the network simulation environment.

Abstract: The disclosure provides a method, an apparatus, an electronic device and a storage medium for network topology-based verification. The method comprises: obtaining a network verification request which comprises device change information for a physical network; determining a target network device changed in the physical network using the device change information, and obtaining extended network devices from network devices in each of the hierarchical layers in the physical network, the extended network devices obtained in each of the hierarchical layers corresponding to different providers; constructing an emulated network topology based on the target network device and the extended network devices; and establishing an emulation runtime environment corresponding to the emulated network topology, and performing emulation verification on the emulated network topology based on the emulation runtime environment to obtain an emulation verification result.