Appendix A: Upgrading To High Availability - Avaya CS 1000E Upgrade Procedures

Appendix A: Upgrading to High
Availability
Campus Redundancy (High Availability) Package Support
Campus Redundancy with co-located Call Servers
Avaya Communication Server 1000E Upgrade
The CP PM CS project introduces a package for enabling and disabling the
Campus Redundancy or High Availability (HA) feature. The software
performs a check to determine whether the HA package is present in the
keycode. If the package is present, then the CP PM call server behaves in the
same manner as the Release 4.5 or later CP II or CP IV (for example, it uses
the HSP to try to detect the presence of the other core). If the other core is
detected, then both cores negotiate to determine which is the active core and
which core is the standby core.
If the CP PM call server is not able to detect the other core, then it comes up
as a single core system. If the HA package is not present in the keycode, then
the existing call server software is modified to block the HSP connection so
that the CP PM call server does not attempt to detect the presence of the core.
In the absence of the HA package, the CP PM call server runs as a single core
system even in a system with two cores and the HSP ports on both cores are
connected.
Figure 55 on page 202
Avaya Communication Server 1000E CP PM system with co-located call
servers. Utilizing the dual homing feature of the MGC, the ELAN of the
CP PM call server and MGC, and the TLAN of the Signaling Server and
MGC is dual homed to the Baystack switches. If one of the LAN links to the
switches fails, or the switch is out of service then the dual homing feature
allows the Avaya CS 1000E CP PM system to continue to function normally.
depicts the configuration of the MG 1000E based
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Hardware Upgrade Procedures