Extreme Networks Summit WM Series Guía de usuario Pagina 57

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 268
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 56
Discovery and registration overview
Summit WM Series WLAN Switch and Altitude Access Point Software Version 4.1 User Guide
57
Altitude AP discovery
Altitude APs discover the IP address of a Summit WM series switch using a sequence of mechanisms
that allow for the possible services available on the enterprise network. The discovery process is
successful when the Altitude AP successfully locates a Summit WM series switch to which it can
register.
You must ensure that the appropriate services on your enterprise network are prepared to support the
discovery process. The following five steps summarize the discovery process:
Step 1 – Use the IP address of the last successful connection to a Summit WM series switch.
Once an Altitude AP has successfully registered with a Summit WM series switch, it recalls that
controller's IP address, and uses that address on subsequent reboots. The AP bypasses discovery and
goes straight to registration. If this discovery method fails, it cycles through the remaining steps until
successful.
Step 2 – Use the predefined static IP addresses for the Summit WM series switches on the network
(if configured).
You can specify a list of static IP addresses of the Summit WM series switches on your network. On
the Static Configuration tab, add the addresses to the Summit Switch Search List.
WARNING!
Altitude APs configured with a static Summit Switch Search List can only connect to Summit WM series
switches in the list. Improperly configured Altitude APs cannot connect to a non-existent Summit WM series
switch address, and therefore cannot receive a corrected configuration.
Step 3 – Use Dynamic Host Configuration Protocol (DHCP) Option 78 to locate a Service Location
Protocol (SLP) Directory Agent (DA), followed by a unicast SLP request to the Directory Agent.
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 method 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 (SA). In larger installations, a Directory Agent (DA) collects information from SAs
and creates a central repository (SLP RFC2608).
The Summit WM series switch 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 Networks. The Summit
WM series switch 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 series switch 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 Controller.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 series switch via DNS.
Vista de pagina 56
1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 267 268

Comentarios a estos manuales

Sin comentarios