Registration After Discovery - Extreme Networks Summit WM User Manual

Configuring the Altitude AP
SLP (Service Location Protocol) - A means of allowing client applications to discover network
services without knowing their location beforehand. Devices advertise their services using a
Service Agent (SA). In larger installations, a Directory Agent (DA) collects information from SAs
and creates a central repository (SLP RFC2608).
The Summit WM Controller contains an SLP SA that, when started, queries the DHCP server for
Option 78 and if found, registers itself with the DA as service type Extreme. The Summit WM
Controller contains a DA (SLPD).
The Altitude AP queries DHCP servers for Option 78 in order to locate any DAs. The Altitude APs
SLP User Agent then queries the DAs for a list of Extreme Networks SAs.
Option 78 must be set for the subnets connected to the ports of the Summit WM Controller and the
subnets connected to the Altitude APs. These subnets must contain an identical list of DA IP
addresses.
Step 4 - Use a Domain Name Server (DNS) lookup for the host name ext-summitwm-connect-
1.domain-name.
If no DA is found, or if it has no Extreme Networks SAs registered, the Altitude AP attempts to
locate a Summit WM Controller via DNS.
If you use this method for discovery, place an A record in the DNS server for ext-summitwm-
connect-1.<domain-name>. The <domain-name> is optional, but if used, ensure it is listed with the
DHCP server.
Step 5 - Use a multicast SLP request to find SLP SAs.
If all of the preceding methods fail to locate a Summit WM Controller, the Altitude AP sends a
multicast SLP request, looking for any SLP Service Agents providing the Extreme Networks service.

Registration after discovery

Any of the discovery steps 2 through 5 can inform the Altitude AP of a list of multiple IP addresses to
which the Altitude AP may attempt to connect. Once the Altitude AP has discovered these addresses, it
sends out connection requests to each of them. These requests are sent simultaneously. The Altitude AP
will attempt to register only with the first which responds to its request.
When the Altitude AP obtains the IP address of the Summit WM Controller, it connects and registers,
sending its serial number identifier to the Summit WM Controller, and receiving from the Summit WM
Controller a port IP address and binding key.
Once the Altitude AP is registered with a Summit WM Controller, the Altitude AP must be configured.
After the Altitude AP is registered and configured, it can be assigned to a WM Access Domain Service
(WM-AD) to handle wireless traffic.
Default Altitude AP configuration
Default Altitude AP configuration simplifies the registration after discovery process. Default Altitude
AP configuration acts as a configuration template that can be automatically assigned to new registering
Altitude APs. The default Altitude AP configuration allows you to specify common sets of radio
configuration parameters and WM-AD assignments for Altitude APs. For more information, see
"Configuring the default Altitude AP settings" on page
72
125.
Summit WM User Guide, Software Version 5.3