The MX and vMX devices can be used for DDoS protection with Policy Enforcer. Policy Enforcer is a Juniper Networks solution that provides real-time protection from DDoS attacks. It can be used to detect and block malicious traffic, and also provides granular control over user access and policy enforcement. The MX and vMX devices are well-suited for use with Policy Enforcer due to their high-performance hardware and advanced security features.

The physical interface for the fab link must be specified in the configuration. Additionally, the fab link supports traditional interface features such as MAC learning, security policy enforcement, and dynamic routing protocols. The fab link does not support fragmentation and the Junos OS supports up to two fab links.

The two types of system logs that Junos generates are control plane logs and data plane logs.
Control plane logs are generated by the Junos operating system and contain system-level events such as system startup and shutdown, configuration changes, and system alarms. Data plane logs are generated by the network protocol processes and contain messages about the status of the network and its components, such as routing, firewall, NAT, and IPS. SQL log files and system core dump files are not types of system logs generated by Junos.