Dell POWERCONNECT 6200 SERIES Configuration Manual

Also see for POWERCONNECT 6200 SERIES: Getting started guide Getting started guide

Contents

Routing Configuration 99Loopback InterfacesPowerConnect 6200 Series software provides for the creation, deletion, and management of loopbackinterfaces.A loopback interface is a software-only interface that is not associated with a physical location; as such itis not dependent on the physical status of a particular router interface and is always considered “up” aslong as the router is running. It enables configuring a stable IP address for remote clients to refer to. Theclient can communicate with the loopback interface using any available, active router interface.NOTE: In this context, loopback interfaces should not be confused with the loopback IP address, usually 127.0.0.1,assigned to a host for handling self-routed packets.Loopbacks are typically used for device management purposes. A client can use the loopback interface tocommunicate with the router through various services such as telnet and SSH. The address on aloopback behaves identically to any of the local addresses of the router in terms of the processing ofincoming packets. This interface provides the source address for sent packets and can receive both localand remote packets.NOTE: The following example uses the CLI to configure a loopback interface. You can also use the Web interface.Click Routing > Loopbacks in the navigation tree.You can create a loopback interface in the Global Config mode by assigning it a unique ID from 0 to 7:console#configureconsole(config)#interface loopback 0Next, you assign an IPv4 or IPv6 address to the interface:console(config-if-loopback0)#ip address 192.168.1.2 255.255.255.255console(config-if-loopback0)#exitconsole(config)#exitYou can view the interface configuration from the Privileged Exec mode:console#show ip interface loopback 0Primary IP Address............................. 192.168.2.2/255.255.255.255Routing Mode................................... EnableAdministrative Mode............................ EnableForward Net Directed Broadcasts................ DisableProxy ARP...................................... EnableLocal Proxy ARP................................ DisableActive State................................... ActiveLink Speed Data Rate........................... InactiveMAC Address.................................... 00FF.F2A3.8888Encapsulation Type............................. --------