Cray System Management Documentation > Cray System Management (CSM) Administration Guide > network > Management Network User Guide > Mellanox Installation and Configuration Guide > Network traffic pattern inside of the system
Network traffic pattern inside of the system
Internal Networks:
- Node Management Network (NMN) - Provides the internal control plane for systems management and jobs control.
- Hardware Management Network (HMN) - Provides internal access to system baseboard management controllers (BMC/iLO) and other lower-level hardware access.
External and Edge Networks:
- Customer Management Network (CMN) - Provides customer access from the Site to the System for administrators.
- Customer Access Network (CAN) or Customer High Speed Network (CHN) provide:
- Customer access from the site to the System for job control and jobs data movement.
- Access from the System to the Site for network services like DNS, LDAP, etc.