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DPT Features and Benefits
The features and benefits of DPT are described in Table 1.
DPT Ring Applications
DPT rings enable a key set of applications for service providers and large enterprises, including:
• Robust, high-bandwidth intra-POP connectivity
• Regional POP interconnectivity
• Cable data access and distribution
• Metro packet transport for business and residential access services
• Regional backbone rings
• Distributed enterprise campus rings
Feature Summary for Cisco 7600 OC-48 POS/DPT Module
• Software configurable selection of either OC-48 POS or DPT modes, thereby supporting transition between POS
and DPT transport-distribution network architectures
Table 1
DPT Features and Benefits
Feature
Benefit
SRP fairness and spatial reuse
• Maximizes ring capacity, cost-effectiveness, and service stability via spatial
reuse, statistical multiplexing, and distributed, inter-nodal fairness
IPS and single ring recovery
• Maximizes ring robustness via self-healing around ring node or fiber failures and
intelligent handling of multiple concurrent trouble events
• Provides fast IP service restoration without Layer 3 reconvergence to minimize
impact on revenue-producing traffic
Dual working fiber rings
• Using interconnected line cards, dual working fiber rings maximize ring
robustness and bandwidth capacity
Topology discovery and routing
procedures
procedures
• Minimize configuration requirements, optimize routing decisions for ring
bandwidth maximization, and aid in network monitoring and management
Network monitoring and management
• Maximize ring robustness and operational efficiency by providing SONET/SDH
support, SRP Management Information Base (MIB) support, and Media Access
Control (MAC)-layer counters for proactive monitoring and recovery and
effective traffic-engineering capabilities
Control (MAC)-layer counters for proactive monitoring and recovery and
effective traffic-engineering capabilities
Pass-through mode support
• Maximizes ring robustness and bandwidth availability by avoiding ring wraps
caused by soft, recoverable failures in router hardware or software
Transport flexibility
• Maximizes deployment flexibility by operating via dedicated fiber, WDM
wavelength, or as SONET/SDH tributary—thus matching both embedded and
evolving infrastructure
evolving infrastructure
Optics options
• Maximize application versatility and deployment flexibility by supporting
single-mode short-, intermediate-, and long-reach optics