ESS Installation
124 Avaya Enterprise Survivable Servers (ESS) Users Guide
h. Community: Enter the Network community number in this field.
A community is a virtual group consisting of an ESS server and one or more Port
Networks. Assigning an ESS server to a community associates the ESS server with the
IPSI(s) in the Port Network(s) for that community. The Port Networks are assigned to
communities on page 6 of the system-parameters ess form (see
System-parameters ess form - page six: Assigning Port Networks to Communities
on
page 125).
If the ESS server is administered with a Local Preferred preference, the ESS server has
a higher value within its community than outside its community.
A Local Only server only advertises to the IPSIs within its community and will never
appear on any IPSI’s priority list outside its community.
For more information on preferences for ESS servers see, IPSI Priority List
on page 71.
Note:
Note: It is possible to administer an ESS server as having no preferences and just a
priority score. If all ESS servers where administered in this fashion, the IPSI
would prioritize each ESS server based on its priority score only.
i. System Preferred: Use this option when the goal is to keep as much of the system
network intact as possible, allowing one ESS server to replace the Main server.
Enter a ’y’ or a ’n’ in this field. If the field is set to ’y’ then the Local Preferred and Local
Only column will be ’n’ and cannot be changed. If this field is set to ’n’ then both the Local
Preferred and Local Only column can be either a ’n’ or a ’y’. The default for this field is set
to ’y’.
A System Preferred server will have a higher value than any other Local Preferred
server, independent of community or administered priority value. If multiple System
Preferred servers are administered, the server with the highest administered priority
value will have the top priority on an IPSI’s list.
For more information on preferences see, IPSI Priority List
on page 71.
j. Local Preferred: Use this option when you want the ESS server to accept the request for
service from IPSIs co-located in the same geographical region, WAN/LAN segment,
district, business unit, etc.
Enter a ’y’ or a ’n’ in this field. The default for this field is set to ’n’.
After the System Preferred preference, the Local Preferred preference has the second
highest value within an IPSI community. When multiple Local Preferred servers are
administered within the same community, the priority value is used to determine which
server will have the higher priority in the IPSI’s list.
For more information on preferences see, IPSI Priority List
on page 71.
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