4.8.2 Configuring Layer 3 Access Port Adoption
The configuration activity required for adopting access ports in a layer 3 environment is unique. In a layer 3 environment, switch discovery is attempted in the following ways:
•On the local VLAN
•Through the DHCP Server
Initially, the access port attempts to find its wireless switch by broadcasting a Hello packet on its local VLAN. During this activity:
1.All switches on the VLAN that receive this Hello packet respond with a parent packet.
2.If no response is received, the access port attempts to discover its switch by first obtaining an IP address from a DHCP (or DNS) server and checking the options field within the DHCP response.
The options field (Option 189) contains a list of switch IP addresses available for the access port.
3.The system administrator now programs these options into the DHCP server.
4.If the access port finds the list, it sends a unidirectional Hello packet (encapsulated in a UDP/IP frame) to each switch on the list.
5.Each switch that receives such a packet responds with a Parent response.
4.8.3Configuring WLAN Assignment
Use the WLAN Assignment tab to assign WLANs and security schemes.
To view existing WLAN Assignments:
1.Select Network > Access Port Adoption Defaults from the main menu tree.
