Alcatel-Lucent 7750 Configuration Manual page 72

Port Features
Working and protection circuits can be connected to a variety of types of network elements
(ADMs, DACSes, ATM switches, routers) and serve as an access or network port providing one or
more services or network interfaces to the router. APS-protected SONET/SDH ports may be
further channelized, and may contain bundled channels MLPPP or IMA Bundle Protection
Groups). The ports may be one of a variety of encapsulation types as supported by the MDA
including PPP, ATM, FR and more. For a definitive description of the MDAs, port types,
switching modes, bundles and encapsulations supported with APS see
Restrictions and Interactions on page
This section discusses the different APS architectures and their implementations.
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Page 72
Single Chassis and Multi-Chassis APS on page 73
APS Switching Modes on page 76
APS Channel and SONET Header K Bytes on page 80
Revertive Switching on page 84
Bidirectional 1+1 Switchover Operation Example on page 84
Protection of Upper Layer Protocols and Services on page 86
APS User-Initiated Requests on page 87
APS and SNMP on page 89
APS Applicability, Restrictions and Interactions on page 90
Sample APS Applications on page 94
90.
7750 SR Interface Configuration Guide
APS Applicability,