To configure virtual interfaces, you should understand the following concepts: ![]() Information About Configuring Virtual Interfaces Feature Information for Configuring Virtual Interfaces Prerequisites for Configuring Virtual Interfacesīefore virtual interfaces can be used in your network, you must have some physical (hardware) interfaces configured and be able to communicate between the networking devices on which you wish to use virtual interfaces.Configuration Examples for Virtual Interfaces.Information About Configuring Virtual Interfaces.Prerequisites for Configuring Virtual Interfaces.To find information about feature support and configuration, use the "Feature Information for Configuring Virtual Interfaces" section. Your Cisco IOS software release may not support all features. This module was first published on May 2, 2005, and last updated on May 2, 2005.įinding Feature Information in This Module This module describes the four common types of virtual, or logical, interfaces that can be configured using Cisco IOS software: Virtual interfaces do not have a hardware component such as the RJ-45 female port on a 100BASE-T Fast Ethernet network interface card. ![]() Virtual interfaces are software-based interfaces that you create in the memory of the networking device using Cisco IOS commands. ICMP Unreachable Messages from Null InterfacesĬonfiguration Examples for Virtual InterfacesĬonfiguring a Loopback Interface: Exampleįeature Information for Configuring Virtual Interfaces Prerequisites for Configuring Virtual Interfaces Configuring Virtual Interfaces Table Of Contents
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