vSphere 5.1 and later allows you to rollback and recover from network misconfiguration using save configuration files or previous version of configurations.

vSphere 5.1 allows you to rollback to previous networking configurations if a networking misconfiguration occurs. vSphere 5.1 also allows you to recover from any misconfiguration by connecting directly to a host to fix any networking issues through the DCUI. Rollback is available for use on both standard and distributed switches.