Extreme Networks Summit WM Series Guía de usuario descargar pdf (Pagina 47)

Discovery and registration

Summit WM-Series WLAN Switch and Altitude Access Point Software Version 1.0 User Guide

Discover step 2: static IP address

You can specify a list of static IP addresses of the Summit WM-Series Switches on your network. On the

Altitude AP Configuration screen Static Configuration tab, add the addresses to the Summit WM-Series

Switch Search List.

WARNING!

Care must be taken when setting or changing these values. Altitude APs configured statically will connect only to

Summit WM-Series Switches in the list. Improperly configured Altitude APs will not be able to connect to a non-

existent Summit WM-Series Switch address and therefore will not be able to receive a corrected configuration.

Discovery step 3: the DHCP and unicast SLP solution

To use the DHCP and unicast SLP discovery method, you must ensure that the DHCP server on your

network supports Option 78 (DHCP for SLP RFC2610). The Altitude APs use this to discover the

Summit WM-Series Switch.

This solution takes advantage of two services that are present on most networks:

● DHCP (Dynamic Host Configuration Protocol), the standard means of providing IP addresses

dynamically to devices on a network.

● 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.

In larger installations, a Directory Agent collects information from Service Agents and creates a

central repository (SLP RFC2608).

The Summit WM-Series Switch contains an SLP Service Agent that, when it starts up, queries the DHCP

server for Option 78 and if found, registers itself with the Directory Agent as service type “extreme”. The

Summit WM-Series Switch contains a Directory Agent (slpd).

The Altitude AP queries DHCP servers for Option 78 in order to locate any Directory Agents. The

Altitude AP's SLP User Agent will then query the DAs for a list of “extreme” Service Agents.

Option 78 needs to be set for the subnets connected to the ports of the Summit WM-Series Switch and

the subnets connected to the Altitude APs. These should contain an identical list of Directory Agent IP

addresses.

Discovery step 4: the DNS solution

If no Directory Agent is found, or if it has no “extreme” Service Agents registered, the Altitude AP will

attempt to locate a Summit WM-Series Switch via DNS.

If you choose to use this method for discovery, place an “A” record in the DNS server for

“ext-summitwm-connect-1”. The <domain-name> is optional, but if you use one, ensure that it is listed

with the DHCP server.

Discovery step 5: the multicast SLP solution

If all of the preceding methods fail to locate a Summit WM-Series Switch, then the Altitude AP sends

out a multicast SLP request, looking for any SLP Service Agents providing the “extreme” service.

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Extreme Networks Summit WM Series Guía de usuario Pagina 47