Ericsson SPR1100 Operations Instructions download pdf (Page 190)

Stream Processing and Networking

indicate that the configuration of the 2 units could not be synchronized

automatically.

 If both of the units are Passive then the previous state is examined.

- If one unit was previously Active and the other unit was previously Passive,

then the previously Active unit becomes Active, the previously Passive unit

remains Passive, and the configuration is copied from the previously Active

unit to the previously Passive unit.

- If both units were previously Active or both units were previously Passive,

then the Conflicting Status alarm is raised, and both units remain Passive.

A Configuration Mismatch alarm is also raised to indicate that the

configuration of the 2 units could not be synchronized automatically.

6.5.3.2 Automatic Redundancy Switching

When the Primary is Active an automatic redunda

ncy switch will occur when:

 A critical alarm is present on the Primary and no critical alarm is present on the

Secondary for more than the time specified by Alarm Primary to Secondary

Delay

 The Secondary is unable to ping the Primary for more than the time specified by

Ping Primary to Secondary Delay

When the Secondary has become active, it will remain active until the operator has

cleared the reason for the primary failure and manually requests a revert to the

Primary, i.e. there is no Auto-revert.

6.5.3.3 Configuration Synchronization

When config

uration changes are made to the active unit in a redundancy group they

are automatically replicated to the other unit. Physical IP address settings are not

replicated between units and must be set independently for each unit. Certain 1+1

redundancy settings must also be set independently on each unit and are not

replicated.

Note A web browser window open on the passive unit will not be automatically

refreshed, hence the operator must manually refresh this.

It is recommended that the Active unit web GUI is used the majority of the time, with

the Passive unit web GUI only used to configure settings unique to the Passive unit.

If a configuration change cannot be replicated on the peer (e.g. due to control

network failure), then a Configuration Mismatch alarm will be raised on the unit on

which the change was made. Once the network problem has been rectified, a

manual configuration copy should be performed so that both units are correctly

configured.

2/1553-FGC 101 1400 Uen B

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Ericsson SPR1100 Operations Instructions Page 190