Configuring the Loopback IP Address

The loopback IP address is a logical IP interface that is used to communicate with APs. The loopback address is used as the Mobility Master or managed device’s IP address for terminating VPN Virtual Private Network. VPN enables secure access to a corporate network when located remotely. It enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security, and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. and GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnels, originating requests to RADIUS Remote Authentication Dial-In User Service. An Industry-standard network access protocol for remote authentication. It allows authentication, authorization, and accounting of remote users who want to access network resources.  servers, and accepting administrative communications. You configure the loopback address as a host address with a 32-bit netmask Netmask is a 32-bit mask used for segregating IP address into subnets. Netmask defines the class and range of IP addresses.. The loopback address is not bound to any specific interface and is operational at all times. To use this interface, ensure that the IP address is reachable through one of the VLAN Virtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. interfaces. It will be routable from all external networks.

You must configure a loopback address if you are not using VLAN1 to connect the Mobility Master or managed device to the network. If you do not configure the loopback interface address, then the first configured VLAN Virtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. interface address is selected. Generally, VLAN Virtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. 1 is the factory default setting, and thus, becomes the IP address. You can configure the loopback IP address using the WebUI or CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions..

The following procedure configures the loopback IP address:

1. In the Mobility Master or Managed Network node hierarchy, select the device and navigate to the Configuration > System > General tab.

2. Expand the Loopback Interface section.

3. Enter an address into the IPv4 Address or IPv6 Address field, as required.

4. Click Submit.

5. Click Pending Changes.

6. In the Pending Changes window, select the check box and click Deploy changes.

 

If you are use the loopback IP address to access the WebUI, changing the loopback IP address will result in loss of connectivity. It is recommended that you use one of the VLAN Virtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. interface IP addresses to access the WebUI.

7. In the Mobility Masternode hierarchy, select the device and navigate to the Maintenance > Software Management > Reboot page to reboot Mobility Master and apply the loopback IP address update.

8. Click Yes to save the configuration.

9. Click Reboot.

10. Mobility Master boots up with the changed loopback IP address.

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command configures the loopback IP address:

(host) [mynode] (config) #interface loopback ip address <ipaddr>