Panasonic 15000 - Manual (Page 125)

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List of terms
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
Copyright © 2006, Nortel Nortel Confidential
SPT
See shortest path tree (SPT) (page 121) .
spare card
A spare processor card is either
• an installed back-up card that has been configured (provisioned) in
software to take over the traffic and services of a compatible or equivalent
card when that card is removed from service manually or by the system;
in the Nortel Multiservice Switch suite of NTPs, occurrences of “spare
card” almost always refer to this definition
• an unused card that is stored as a replacement card in the event of a
failure, upgrade, or redeployment of a compatible or equivalent card
See also sparing (page 125) and sparing panel (page 125) .
sparing
Using a spare card to enable redundant back-up of another card’s active
traffic, services, and capabilities. The effectiveness of the sparing depends on
choosing a compatible or equivalent card. A compatible card usually has the
same root product engineering code (PEC) and provides the same services
and capabilities but with different rates of performance. An equivalent card
can have a different PEC but provides the same or very similar services and
capabilities.
sparing panel
A termination panel that enables the sparing of one or more function
processors (FPs) by a single FP of the same type and compatible or
equivalent vintage. See also
sparing timer (page 125) , sparing (page 125) ,
and equipment sparing (page 48) .
sparing timer
This timer is used to cause a switchover if a failed main function processor
(FP) in a one-for-n sparing configuration has not recovered by the time it
expires. This timer is five minutes. See also
stability timer (page 127) .
SPD
See security policy database (SPD) (page 119) .
SPE
See SONET payload envelope (SPE) (page 124) .
specified path
A manually pre-determined path that consists of a series of transit nodes.