Setting Up a Campus (3 tier L3 access) Underlay Network

To set an underlay network of Campus or (3 tier L3 access) for the AOS-CX switches, complete the following workflow.

Underlay network requires Aruba Central Advanced licenses. A notification message is displayed indicating a valid advanced license is required for this feature. You can acknowledge the message by clicking the close button. The notification message is user-specific. Once the message is closed, it will not be displayed for the same user, but for other users, the message will be displayed. For more information, refer to the AOS-CX switches Feature Pack Ordering Guide and EULA End User License Agreement. EULA is a legal contract between a software application publisher or author and the users of the application.

Step 1: Configuring the Network Type

To configure an underlay network for an AOS-CX switch, complete the following steps:

  1. In the Aruba Central app, complete the following steps:
    • To select a group in the filter:
      1. Set the filter to a group.

        The dashboard context for the group is displayed.
      2. Under Manage, click Devices > switches.
      3. To view the AOS-CX switch configuration dashboard, click the Config icon.
  2. Click Routing > Underlay Networks.
  1. In the Networks table, click the + icon.

    The Guided Setup for Underlay Network page is displayed.

  2. Enter the Network Name.

  3. Select the Campus(3 tier L3 access) checkbox under What type of Network to configure.

  4. To display the Structure section, click Next.

Step 2: Setting the Structure of the Underlay Network

To assign WAN Wide Area Network. WAN is a telecommunications network or computer network that extends over a large geographical distance. and WLAN Wireless Local Area Network. WLAN is a 802.11 standards-based LAN that the users access through a wireless connection. gateways to the core switches, complete the following step.

  1. In the Structure section, select the type of switch to be connected to the WAN gateway.

    • Core switches—Connects the WAN gateway directly to the core switches.

    • Service Aggregation switches—Connects the WAN gateway to the core switches through a service aggregation switch.

  2. Select one of the checkboxes if you are connected to the WLAN gateway.

    • No—Select if there is no WLAN gateway connected directly to one or more core switches.

    • Yes, Connected to Core switches—Select when there is a WLAN gateway connected to the core switches.

    • Yes, Connected to Service Aggregation switches—Select when there is a WLAN gateway connected to the core switches through a service aggregation switch.

  3. Select the checkbox for VSX pair in the Access-Aggregration.

    • No—Select if you want to deploy routed access design for the switches.

    • Yes—Select if you want to deploy scaled access design for the switches.

  4. To display the Device Assignment section, click Next.

Step 3: Assigning Devices to the Network

This section displays the device persona suggestions for the core switches present in the network.

The Device assignment section consists of subsections that auto populates suggestions depending on the selections that you made in the Structure section. The switches table displays the Name, Serial, MAC Media Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. Address, Model, and Discovered Network Personas across all subsections of the Device Assignment page.

  • Core—Select new switches or edit the selection based on your requirements and click Next.

  • Access Aggregation—Select and confirm the switches to use as access aggregation switches in the underlay network and click Next.

  • WAN Service Aggregation—This section is displayed when WAN gateways (site uplink) are connected to the service aggregation switches. Select new switches or edit the selection based on your requirements and click Next.

  • WLAN Service Aggregation—This section is displayed when WLAN gateways are connected to the service aggregation switches. Select new switches or edit the selection based on your requirements and click Next.

  • Access—Select new switches or edit the selection based on your requirements and Click Next to display Configuring your underlay network page.

Step 4: Configuring the Underlay Network

The Configuring your underlay network page displays various parameters to configure the underlay network. After providing the required information for the parameters. Click Next to open the Summary Page.

The following table describes the parameters in the Configuring your underlay network table.

Table 1: Configuring your Underlay Network Parameters.

Column

Function

Interface IPv4 subnet Subnet is the logical division of an IP network. pool

Enter the ROP interface IPv4 subnet pool address for the underlay network.

Loopback IPv4 subnet pool

Enter the loopback IPv4 subnet pool address for the underlay network.

MTU size (bytes)

Enter the MTU Maximum Transmission Unit. MTU is the largest size packet or frame specified in octets (eight-bit bytes) that can be sent in networks such as the Internet. size within the range of 1–9168 bytes.

VSX-Pair Transit VLAN

Enter the VSX-pair transit 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. within the range of 1–4098.

Use out-of-band management port for VSX keepalive Signal sent at periodic intervals from one device to another to verify that the link between the two devices is working. If no reply is received, data will be sent by a different path until the link is restored. A keepalive can also be used to indicate that the connection should be preserved so that the receiving device does not consider it timed out and drop it.

The toggle remains disabled by default to use dedicated ports for the VSX keepalive.

Enable the toggle to use out-of-band ports for VSX keepalive

Use NTP Network Time Protocol. NTP is a protocol for synchronizing the clocks of computers over a network. servers

Enable the toggle to enter the NTP server address for the underlay network. You can add more than one address for the server by clicking the add (+) icon.

Clicking the delete icon deletes the NTP server address.

Use DNS Domain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. servers

Enable the toggle to enter the DNS server address for the underlay network. You can add more than one address for the server by clicking the add (+) icon.

Clicking the delete icon deletes the DNS server address.

Step 5: Viewing the summary Page

This section displays all the parameter that you have configured under the Details and Device Management sections.

Click Finish to complete the underlay network configuration.