Avaya Mobile Communication 3100 Planning and Engineering Manual do Utilizador descarregar pdf (Página 21)

High availability 21

Figure 4

MCG 3100 high availability configuration

A redundant system includes an active server and a standby server.

Mobile clients access the active server, while the standby server functions

as a backup. The two roles switch freely, based on the following rules:

• If the MCG 3100 does not have a configured backup IP address, it

starts in active mode.

• If the MCG 3100 has a configured backup IP address, it starts in

inactive mode and attempts to locate the standby system.

— If the standby server is in standby mode, the system with the lower

IP address becomes active.

— If the standby server is in active mode, the standby server remains

active.

— If the standby server is not located, the local system is declared

active.

• If the active system stops, the standby system becomes active.

The pair of MCG 3100 servers must contain identical software for

redundancy to work. Each server acts as the backup for the other server.

Nortel Mobile Communication 3100

Nortel Mobile Communication 3100 Planning and Engineering

NN42030-200 03.04 17 July 2009

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Avaya Mobile Communication 3100 Planning and Engineering Manual do Utilizador Página 21