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50 Avaya 1010/1020 User Guide
Configuring Auto Discovery
Auto discovery enables Avaya systems on your network to pass address information to
other Avaya systems automatically. By default, when an Avaya system joins a network, it
sends a broadcast packet to the local subnet to announce its presence. Any Avaya system
on the local subnet that receives the packet and has Auto Discovery set to Enabled replies
by sending address information about itself and a list of IP addresses of other Avaya
systems that it has discovered.
The Avaya system creates an entry in its corporate directory for every system on the local
subnet from which it received a response
. It then queries the list of other IP addresses that it
received and the IP addresses that are stored in its own Redial list, but only if those
addresses are allowed by the filters that you specify in the Auto Discovery Subnets and
Auto Discovery Ignored Subnets preferences. By default, the system replies and sends
queries to other Avaya systems in the local subnet only.
Configure the Auto Discovery Subnets and Auto Discovery Ignored Subnets
preferences to enable the system to discover other Avaya systems outside the local subnet
and share that information with other Avaya systems. Specify subnet filters (separated by
spaces) in the Auto Discovery Subnets preference to identify the subnets to which the
Avaya system can send queries and replies. By default, the preference is empty; the system
sends queries and replies to other Avaya systems on the local subnet only.
To exclude subnets from auto discovery, specify subnet filters in the Auto Discovery
Ignored Subnets preference. If a destination address does not match one of the filters in
the Auto Discovery Subnets preference, or if it matches one of the filters in the Auto
Discovery Ignored Subnets preference, then the Avaya system does not query or reply to
the Avaya system at that address.
For example, you can configure the Auto Discovery Subnets preference to include a large
subnet and the Auto Discovery Ignored Subnets preference to exclude a subset of the
subnet. Consider a network that has several subnets with the IP address 10.* and a slow
network connection to devices that have a 10.85.* address. If you enter 10.* in the Auto
Discovery Subnets and 10.85.* in the Auto Discovery Ignored Subnets preference, the
Avaya system queries and replies to all Avaya systems that have a 10.* address, except
those that have a 10.85.* address.
If you set Auto Discovery to Disabled, the Avaya system does not send a broadcast
message to the local subnet and cannot discover or be discovered by other Avaya systems.
Reading from an LDAP Server
When you enable and configure LDAP preferences to populate the corporate directory, you
specify the hostname, login and query parameters, and the refresh interval for reading data
from a preconfigured LDAP server. Avaya recommends that you use an LDAP server
configured with an H.350 compliant schema.