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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 12

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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Ethernet Interface Overview

Ethernet Interface Overview

The Ethernet interfaces described in this chapter refer to the physical Ethernet interfaces.

Interfaces are used to exchange data and interact with other network devices, and are classified into physical interfaces and logical interfaces. Physical interfaces include the service interfaces (such as GE service interfaces) responsible for service transmission and management interfaces (such as MEth management interfaces) responsible for device management. Logical interfaces are manually configured interfaces and can be used to exchange data but do not exist physically. Logical interfaces, such as VLANIF and loopback interfaces, are used to transmit services.

The Ethernet becomes the most important local area network (LAN) networking technology because it is flexible, simple, and easy to implement. Ethernet interfaces are real physical interfaces provided for users to operate and configure. Ethernet interfaces are used to receive and send data.

Based on different service functions, the Ethernet interfaces of switches can be classified into the following types:
  • MEth management interfaces: used to log in to the device to perform configuration and management. They are not responsible for service transmission.

  • Service interfaces: used to receive and send service data.

Based on different interface rates, the Ethernet interfaces of switches can be classified into the following types:
  • GE interfaces
  • 10GE interfaces
  • 40GE interfaces
Based on different electrical attributes, the Ethernet interfaces of switches can be classified into the following types:
  • Electrical interfaces
  • Optical interfaces
Based on different packet forwarding modes, the Ethernet interfaces of switches can be classified into the following types:
  • Layer 2 Ethernet interfaces: physical interfaces working at the data link layer. They can only forward the received packets in Layer 2 switching mode, or join VLANs to forward the packets in Layer 3 routing mode through VLANIF interfaces.
  • Layer 3 Ethernet interfaces: physical interfaces working at the network layer. IP addresses can be configured for these interfaces. They can forward the received packets in Layer 3 routing mode. That is, they can send and receive the packets whose source and destination IP addresses are located in different segments.
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Updated: 2019-08-09

Document ID: EDOC1000041694

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