Configuring a Basic Topology

1. From the top menu, click VNS. Then, in the left pane, select Topologies.
   The Topologies window displays.
2. Select the topology to edit or click New to create a new topology.
   

   Configuring a basic topology

   
3. On the General tab, enter a name for the topology in the Name field.
4. Select a mode of operation from the Mode drop-down list. Choices are:
   • Physical — VLAN (Virtual LAN) identifier (1 - 4094), with at least one layer 2 member port (no mu associated).
   • Routed — Routed topologies do not require Layer 2 configuration (controller internal VLAN identifier from valid range 1- 4094), and Layer 3 configuration. See Layer 3 Configuration for more information.
   • Bridge Traffic Locally at AP — Requires Layer 2 configuration. Does not require Layer 3 configuration. Bridge Traffic at the AP VNSs do not require the definition of a corresponding IP address since all traffic for users in that VNS will be directly bridged by the Wireless AP at the local network point of attachment (VLAN at AP port).
   • Bridge Traffic Locally at EWC — Requires Layer 2 configuration. May optionally have Layer 3 configuration. Layer 3 configuration would be necessary if services (such as DHCP (Dynamic Host Configuration Protocol), captive portal, etc.) are required over the configured network segment, or if controller management operations are intended to be done through the configured interface.
   • Fabric Attach — The Fabric Attach topology type is similar to B@AP with the added I-SID parameter. Fabric Attach can be configured on a controller anywhere a B@AP topology can be configured. See Bridge Traffic Locally at AP.
5. Configure the Layer 2 VLAN Settings, depending on the previously selected Mode.
   • For Physical, enter a VLAN identifier (2 - 4094), with at least one layer 2 member port (no MU associated).
   • For Bridge Traffic Locally at EWC, enter a VLAN identifier (2- 4094) that is valid for your system and enter the port to which this VLAN is attached to, according to the networking deployment model pre-established during planning.
   • For Bridge Traffic Locally at AP, enter a VLAN identifier (1 - 4094), 4094 is reserved for Internal VLAN ID.
   • For Fabric Attach, enter a VLAN identifier (1 - 4094), 4094 is reserved for Internal VLAN ID and an I-SID (service identifier).
   • Specify whether the VLAN configuration is Tagged or Untagged.
   • To eliminate ARP Request Broadcast on the Wireless network, select ARP Proxy. ARP Proxy applies to traffic for Bridge Traffic Locally at AP Topologies. ARP Proxy is configurable per topology.
   • For Port, select the Physical (Ethernet) or LAG (Link Aggregation Group) data port. For more information, see Viewing and Changing the L2 Ports Information.
6. (Optional) Provide a netmask in the Mask field for topologies that do not support Layer 3. This option makes it possible to add the Framed-IP-Netmask attribute to the client RADIUS accounting request packets when the topology does not support Layer 3.
7. Click Save to save your changes.