Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 470

Port Pipes A port pipe is a Dell Networking-specific term for the hardware packet-processing elements that handle network traffic to and from a set of front-end I/O ports. The physical, front-end I/O ports are referred to as a port set. The system has 10 switch cards and each card has only one port pipe and 48 ports in each. • For ports connected through the port extender, you can have a maximum of 4 sessions system. • For ports directly attached to the chassis you can have a maximum of 4 sessions per port pipe. Refer to Port Numbering Convention for the exact port location on switch line cards. Configuration Task List for Physical Interfaces By default, all interfaces are operationally disabled and traffic does not pass through them. The following section includes information about optional configurations for physical interfaces: • Overview of Layer Modes • Configuring Layer 2 (Data Link) Mode • Configuring Layer 2 (Interface) Mode • Management Interfaces • Auto-Negotiation on Ethernet Interfaces • Clearing Interface Counters Overview of Layer Modes On the Dell Networking OS, you can place physical interfaces, port channels, and VLANs in Layer 2 mode or Layer 3 mode. By default, VLANs are in Layer 2 mode. Table 36. Layer Modes Type of Interface Possible Modes 10-Gigabit Ethernet and Layer 2 40-Gigabit Ethernet Layer 3 Requires Creation No Default State Shutdown (disabled) Management N/A No PE Gigabit Ethernet Layer 2 No Loopback Layer 3 Yes Null interface N/A No Port Channel Layer 2 Yes Layer 3 Shutdown (disabled) Shutdown (disabled) No shutdown (enabled) Enabled Shutdown (disabled) VLAN Layer 2 Layer 3 Yes, except for the default VLAN. No shutdown (active for Layer 2) Shutdown (disabled for Layer 3) 470 Interfaces