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Configuration Guide - Interface Management

CloudEngine 12800 and 12800E V200R003C00

This document describes the interface management configuration, including basic interface configuration, Ethernet interface configuration, and logical interface configuration.

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Overview of Logical Interfaces

Overview of Logical Interfaces

This section describes logical interfaces supported by CloudEngine 12800 and 12800E Series.

Table 3-1 Logical interfaces
Interface Description Configuration Reference
Eth-Trunk An Eth-Trunk is formed by binding multiple Ethernet interfaces to provide more bandwidth and higher transmission reliability. For details about how to configure an Eth-Trunk, see Link Aggregation Configuration in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - Ethernet Switching.
VLANIF interface A VLANIF interface has Layer 3 features and enables VLANs to communicate after being assigned an IP address. For details about how to configure a VLANIF interface, see VLAN Configuration in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - Ethernet Switching.
Layer 2 sub-interface On VXLAN networks, service access points are Layer 2 sub-interfaces. You can configure different flow encapsulation modes on the Layer 2 sub-interfaces, so that the Layer 2 sub-interfaces can process different data packets. For details about how to configure a Layer 2 sub-interface, see Configuring a VXLAN Service Access Point in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - DCN and Server Management.
Layer 3 sub-interface A Layer 3 sub-interface is a virtual interface configured on a main interface to implement inter-VLAN communication.
NOTE:
  • Before configuring a Layer 3 sub-interface on a Layer 2 physical interface or Layer 2 Eth-Trunk, run the undo portswitch command to switch the interface to a Layer 3 interface.
  • The MAC address of a Layer 3 sub-interface is the same as that of the main interface.
  • A Layer 3 sub-interface can be assigned an IP address.
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Stack interface A stack interface is a logical interface used to implement the stacking function. The stacking function virtualizes multiple switches into a logical switch to improve the forwarding performance of a large amount of data and network reliability in data centers. For details about how to configure a stack interface, see Stack Configuration in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - Device Management.
Loopback interface

A loopback interface is always Up and can be configured with a 32-bit subnet mask.

There is one unique loopback interface called the InLoopBack0 interface, which is automatically created at startup. The InLoopback0 interface is a special and fixed loopback interface. It uses the fixed loopback address 127.0.0.1/8 to receive data packets destined for the host where the InLoopBack0 interface resides. The loopback address of the InLoopBack0 interface is not advertised.

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NULL interface A NULL interface used in route filtering because any network packets sent to this interface are discarded. -
Tunnel interface A tunnel interface has Layer 3 features, transmits packets, and identifies and processes packets transmitted over a tunnel.

For details about how to configure a tunnel interface, see IPv6 Transition Technology Configuration in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - IP Service and GRE Configuration Guide in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - VPN.

Multicast tunnel interface (MTI) An MTI is a virtual interface that works as the channel for data exchange between a public network instance and a VPN instance on a provider edge (PE) in the multicast VPN scenario. Two PEs can exchange Protocol Independent Multicast (PIM) messages to set up a PIM neighbor relationship on a public network instance through MTIs.

For details about how to configure an MTI, see Multicast VPN Configuration in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - IP Multicast.

FCoE interface If Fibre Channel over Ethernet (FCoE) is configured, devices communicate and transmit traffic through FCoE interfaces. Therefore, you need to configure FCoE logical interfaces on the devices. For details about how to configure an FCoE interface, see FCoE Configuration in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - DCN and Server Management.
NVE interface An NVE interface is the logical interface to establish VXLAN tunnels with other NVE devices.

For details about how to configure an NVE interface, see VXLAN Configuration Guide in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - DCN and Server Management.

VBDIF interface A VBDIF interface is the virtual interface based on a BD to support Layer 3 features and implement communication between different BDs, between BD and non-BD networks, and between BDs and Layer 3 networks.

For details about how to configure a VBDIF interface, see VXLAN Configuration Guide in the CloudEngine 12800 and 12800E Series Switches Configuration Guide - DCN and Server Management.

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Updated: 2019-05-05

Document ID: EDOC1100004195

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