WESM zl Management and Configuration Guide WT.01.28 and greater

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Configuring the ProCurve Wireless Edge Services zl Module
Radio Port Adoption
Figure 2-34. RPs Requiring Layer 3 Adoption
An RP first attempts to be adopted at Layer 2. If Layer 2 adoption fails, the RP initiates
Layer 3 adoption. The RP sends a DHCP request so that it can begin to communicate
at Layer 3.
After receiving an IP address, the RP attempts to contact the Wireless Edge Services
zl Module at Layer 3. The RP can discover the module’s IP address either through a
special DHCP option (option 189) or through Domain Name System (DNS).
To be adopted at Layer 3, an RP requires:
■ its own IP address and the IP address of a default gateway
The RP receives both its IP addresses through DHCP. (Because the RP is on a
different subnetwork than the Wireless Edge Services zl Module, the RP requires
the default gateway to route its adoption messages to the module.)
■ the IP address of the Wireless Edge Services zl Module
The RP can learn this address in one of two ways:
• receiving the address in option 189 of a DHCP configuration
• looking up the address through DNS