Avaya 03-300430 User Manual

The WSP has the following operational features:

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The WSP feature is activated/deactivated via license file.  You can verify that ATM WSP is 
enabled by checking the value of the ATM WAN Spare Processor field on the 
system-parameters customer-options screen.

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Fail-over occurs when the connections with the main server and every higher-priority WSP 
is lost (for an administrable period of time between 5 and 99 minutes; default = 5 minutes).  
When the administered threshold is exceeded, the highest-priority standby WSP becomes 
active.  Once the standby WSP becomes active, it takes over control of one or more PNs.  
Restoration to the normal configuration must be manual.

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A WSP in the standby mode is not intended to be a DCS node.  Although DCS could 
potentially play a role in an effective back-up or re-route strategy, no provision has been 
made to support DCS connections between parts of a failed switch.  A WSP in the active 
mode can have the DCS functionality of the server.

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The main server makes no attempt to do maintenance on the WSPs.

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A WSP can perform maintenance on itself, and monitor WAN connectivity.

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A WSP is not recognized by the system’s hardware or software as a PN when not active, 
and functions in place of the main server when active.  Up to seven WSPs can reside in an 
ATM PNC configuration.  The number of PNs in an S8700 Multi-Connect configuration is 
not limited by the number of WSPs used (i.e., the number of WSPs used is not subtracted 
from the total number of PNs to determine the number of PNs that can the system can 
support).

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Every WSP could potentially take over the entire S8700 Multi-Connect system.

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Links are established between the main server and each WSP, and from every WSP to 
every other WSP.  These links are monitored by the WSPs, as well as by the main server, 
so that each processor is able to observe and report status.

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Each WSP is assigned a unique priority.  WSPs become active if they cannot establish 
communications both with the main server and with a higher-priority WSP.

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An active WSP attempts to establish EAL connectivity to the PNs.

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Contention for support of PNs is addressed by prioritization, and also by the fact that the 
PNs accept an EAL connection to only the main server or one WSP at a time.

Note:

Each WSP reports its alarms to INADS as an individual system processor.  The 
INADS database correlates WSPs together as part of a larger network.