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14215700-IG, Edition 7.0
January 2018, Original document
146
Design of Redundant Server Solution
This section describes how to design a redundant server solution.
Designing a redundant Spectralink IP-DECT Server 6500 solution is very similar to designing any
other redundant network service. In a redundant Spectralink IP-DECT Server 6500 solution, the
servers should be connected to separate switches, power groups etc.
Below is an example design of a redundant Spectralink IP-DECT Server 6500 solution including a
master Spectralink IP-DECT Server 6500 and a redundant backup Spectralink IP-DECT Server
(slave server).
Note:
l
Use separate switches, power groups and servers in a redundant setup.
l
Master server and backup (slave) server must have same firmware version.
l
When upgrading firmware on base stations, servers and media resources, only
reboot when all devices have been upgraded.
l
Keep-alive packets using TCP on port 50017 are sent between the master server-
and backup server. Network administrators should make sure that this port is
open.
How This Works
The redundancy feature works as a two-step function, adding the redundancy feature and the load
balancing feature to the system. All users will be split up in two sections: a 50% of the users will be
registered on the master Spectralink IP-DECT Server 6500 and 50% of the users on the backup
server. This is indicated on
Users
>
List Users
>
User List
under
Node
(right side) by an M for
master server and an S for backup server (see image below):
Spectralink IP-DECT Server 400/6500 Installation and Configuration Guide