What is the purpose of configuring different levels of syslog for different devices on the network?

Rate-limiting syslog messages is a separate configuration feature to prevent a flood of messages, not the primary purpose of setting severity levels.

Syslog levels, also known as severity levels, categorize messages by their importance (e.g., emergency, alert, critical, error, warning, notice, informational, debug). Configuring different levels on devices allows administrators to filter and determine which minimum severity level messages should be logged or sent to a syslog server, preventing less critical messages from overwhelming the system or logs.

Identifying the source of a syslog message is achieved by the message header itself, which typically includes the hostname or IP address of the sending device, not by setting severity levels.

While setting severity levels can indirectly affect the number of messages stored, its primary purpose is classification by importance, not explicitly controlling the storage quota.