Uplink Interfaces

Aruba Central (on-premises) supports 3GThird Generation of Wireless Mobile Telecommunications Technology. See W-CDMA. and 4GFourth Generation of Wireless Mobile Telecommunications Technology. See LTE. USBUniversal Serial Bus. USB is a connection standard that offers a common interface for communication between the external devices and a computer. USB is the most common port used in the client devices. modems, and the Wi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard. uplink to provide access to the corporate network.

The following types of uplinks are supported on Aruba Central:

• 3G/4G Uplink
• Ethernet Uplink
• Wi-Fi Uplink

3G/4G Uplink

Aruba Central (on-premises) supports the use of 3G/4G USB modems to provide the Internet back haul to Aruba Central (on-premises). The 3G/4G USB modems can be used to extend client connectivity to places where an EthernetEthernet is a network protocol for data transmission over LAN. uplink cannot be configured. This enables the IAPs to automatically choose the available network in a specific region.

Types of Modems

Aruba Central (on-premises) supports the following three types of 3G modems:

• True Auto Detect—Modems of this type can be used only in one country and for a specific ISPInternet Service Provider. An ISP is an organization that provides services for accessing and using the Internet.. The parameters are configured automatically and hence no configuration is necessary.
• Auto-detect + ISP/country—Modems of this type require the user to specify the Country and ISP. The same modem is used for different ISPs with different parameters configured for each of them.
• No Auto Detect—Modems of this type are used only if they share the same Device-ID, Country, and ISP details. You need to configure different parameters for each of them. These modems work with Aruba Central when the appropriate parameters are configured.

Table 1: 4G Supported Modem

Modem Type	Supported 4G Modem
True Auto Detect	Pantech UML290 Ether-lte

Configuring Cellular Uplink Profiles

To configure 3G or 4G uplinks using Aruba Central, complete the following steps:

1. In the Network Operations app, set the filter to a group containing at least one AP.

   The dashboard context for the group is displayed.

2. Under Manage, click Devices > Access Points.

   A list of APs is displayed in the List view.

3. Click the Config icon.

   The tabs to configure the APs are displayed.

4. Click Show Advanced.
5. Click the Interfaces tab.

   The Interfaces page is displayed.

6. Click the Uplink accordion.
7. Under 3G/4G, perform any of the following steps:
   • To configure a 3G or 4G uplink automatically, select the Country and ISP. The parameters are automatically populated.
   • To configure a 3G or 4G uplink manually, perform the following steps:
     1. Select the country from the Country drop-down list.
     2. Select the service protocol from the ISP drop-down list.
     3. Enter the type of the 3G/4G modem driver type:
   • For 3G—Enter the type of 3G modem in the USB Type text box.
   • For 4G—Enter the type of 4G modem in the 4G USB Type text box.
     1. Enter the device ID of modem in the USB DEV text box.
     2. Enter the TTYTeleTypeWriter. TTY-enabled devices allow telephones to transmit text communications for people who are deaf or hard of hearing as well as transmit voice communication. port of the modem in the USB TTY text box.
     3. Enter the parameter to initialize the modem in the USB INIT text box.
     4. Enter the parameter to dial the cell tower in the USB Dial text box.
     5. Enter the parameter used to switch a modem from the storage mode to modem mode in the USB Mode Switch text box.
     6. Select the USB authentication type from the USB Auth Type drop-down list.
     7. Enter the username used to dial the ISP in the USB User text box.
     8. Enter the password used to dial the ISP in the USB Password text box.
8. Click Save Settings.
9. Reboot the IAP for changes to affect.

Ethernet Uplink

The Ethernet 0 port on an IAP is enabled as an uplink port by default. The Ethernet uplink supports the following:

• PPPoE
• DHCP
• Static IP

You can use PPPoE for your uplink connectivity in a single AP deployment.

When the Ethernet link is up, it is used as a PPPoEPoint-to-Point Protocol over Ethernet. PPPoE is a method of connecting to the Internet, typically used with DSL services, where the client connects to the DSL modem. or DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  uplink. After the PPPoE settings are configured, PPPoE has the highest priority for the uplink connections. The IAP can establish a PPPoE session with a PPPoE server at the ISP and get authenticated using PAPPassword Authentication Protocol. PAP validates users by password. PAP does not encrypt passwords for transmission and is thus considered insecure. or the CHAPChallenge Handshake Authentication Protocol. CHAP is an authentication scheme used by PPP servers to validate the identity of remote clients.. Depending upon the request from the PPPoE server, either the PAP or the CHAP credentials are used for authentication. After configuring PPPoE, reboot the IAP for the configuration to take effect. The PPPoE connection is dialed after the AP comes up. The PPPoE configuration is checked during IAP boot and if the configuration is correct, Ethernet is used for the uplink connection.

You can also configure an alternate Ethernet uplink to enable uplink failover when an Ethernet port fails.

Configuring PPPoE Uplink Profile

To configure PPPoE settings, complete the following steps:

1. In the Network Operations app, set the filter to a group containing at least one AP.

   The dashboard context for the group is displayed.

2. Under Manage, click Devices > Access Points.

   A list of APs is displayed in the List view.

3. Click the Config icon.

   The tabs to configure the APs are displayed.

4. Click Show Advanced.
5. Click the Interfaces tab.

   The Interfaces page is displayed.

6. Click the Uplink accordion.

7. Under PPPoE, configure the following parameters:

   1. Enter the PPPoE service name provided by your service provider in the Service Name.
   2. In the CHAP Secret and Retype CHAP Secret fields, enter the secret key used for CHAP authentication. You can use a maximum of 34 characters for the CHAP secret key.
   3. To set a local interface for the PPPoE uplink connections, select a value from Local Interface. The selected DHCP scope is used as a local interface on the PPPoE interface and the Local, L3 DHCP gateway IP address as its local IP address. When configured, the local interface acts as an unnumbered PPPoE interface and allocated the entire Local, L3 DHCP subnetSubnet is the logical division of an IP network. to the clients.
   4. Enter the user name for the PPPoE connection in the User field.
   5. In the Password and Retype Password fields, enter a password for the PPPoE connection and confirm it.

   The options in Local Interface are displayed only if a Local, L3 DHCP scope is configured on the IAP.

8. Click Save Settings.
9. Reboot the IAP.

Wi-Fi Uplink

The Wi-Fi uplink is supported for all IAP models, except 802.11ac APs. Only the conductor IAP uses the Wi-Fi uplink. The Wi-Fi allows uplink to open, PSK-CCMP, and PSK-TKIP SSIDs.

• For single radio IAPs, the radio serves wireless clients and Wi-Fi uplink.
• For dual radio IAPs, both radios can be used to serve clients but only one of them can be used for Wi-Fi uplink.

Configuring a Wi-Fi Uplink Profile

The following configuration conditions apply to the Wi-Fi uplink:

• To bind or unbind the Wi-Fi uplink on the 5 GHzGigahertz. bandBand refers to a specified range of frequencies of electromagnetic radiation., reboot the IAP.
• If Wi-Fi uplink is used on the 5 GHz band, mesh is disabled. The two links are mutually exclusive.

To provision an IAP with Wi-Fi Uplink, complete the following steps:

1. In the Network Operations app, set the filter to a group containing at least one AP.

   The dashboard context for the group is displayed.

2. Under Manage, click Devices > Access Points.

   A list of APs is displayed in the List view.

3. Click the Config icon.

   The tabs to configure the APs are displayed.

4. Click Show Advanced.
5. Click the Interfaces tab.

   The Interfaces page is displayed.

6. Click the Uplink accordion.
7. Under Wi-Fi, enter the name of the wireless network that is used for Wi-Fi uplink in the Name(SSID) box.
8. From Band, select the band in which the VC currently operates. The following options are available:
   • 2.4 GHz (default)
   • 5 GHz
9. From Key Management drop-down list, select the type of key for uplink encryption and authentication.
   • When WPA Personal or WPA-2 Personal key management type is selected, the passphrase options are available for configuration.
   1. Select a passphrase format from the Passphrase Format drop-down list.

      The following passphrase options are available:

      • 8 - 63 alphanumeric characters
      • 64 hexadecimal characters

      Ensure that the hexadecimal password string is exactly 64 digits in length.

   2. Enter a PSKPre-shared key. A unique shared secret that was previously shared between two parties by using a secure channel. This is used with WPA security, which requires the owner of a network to provide a passphrase to users for network access. passphrase in Passphrase.
   • When WPA Enterprise or WPA-2 Enterprise key management type is selected, the 802.1x authentication options are available for configuration.
   1. From the WiFi1X drop-down list, select 802.1x authentication protocol to be used:
      • Specify the certificate type to be used by selecting Cert TPM or Cert User.
      • If PEAP authentication type is selected, enter the user credentials in the Username and Password text box.
   2. Toggle the Validate Server button to enable or disable server certificate verification by the AP.
10. Click Save Settings.