Alcatel-Lucent 7705 SAR manual Features, Benefits, Operations, administration and maintenance

The Alcatel-Lucent 7705 SAR utilizes extensive traffic management policies to ensure fairness with detailed classification and hierarchical schedul- ing including minimum/maximum, profiled, round robin and strict priority scheduling and multi-tier policing to differentiate and prioritize individual services and flows.

Operations, administration and maintenance

In order to ensure continuity of services, the Alcatel-Lucent 7705 SAR has a full set of operations, adminis­ tration and maintenance (OAM) features including:

•LSP ping

•LSP traceroute

•Service distribution path (SDP) ping

¬Verifies, for example, tunnel connectivity and round trip delay

•Virtual circuit connectivity verification (VCCV)

¬Verifies, for example, service level existence and round trip time

¬Extends OAM to pseudowire services

•Service Assurance Agent (SAA)

¬Runs in background, periodically collecting network “health” infor- mation from OAM mechanisms­ such as VCCV and monitoring­ for prob- lems such as SLA transgressions.

These features, when under the control of the Alcatel-Lucent 5620 management portfolio, ensure rapid fault detection as well as efficient troubleshooting. In particular, SLAs can be monitored, and transgressions detected and reported via the SAA.

Synchronization

Cell sites rely on the backhaul network to provide synchronous interfaces for the proper delivery of data. In addition, cell sites may rely on the network interfaces as stable references with which to derive radio frequencies (RFs) and in order to ensure reliable subscriber handover between cell towers.

The Alcatel-Lucent 7705 SAR supports external reference timing, line timing and adaptive timing in Release 1.0.

The adaptive timing is fully capable of offering end-to-end synchronization. In addition, the Alcatel-Lucent 7705 SAR is completely hardware-ready to support IEEE1588v2. This IEEE standard defines a method to minimize the effects of delay and delay variation (jitter). This is accomplished by a combi­ nation of built-in architectural features and also powerful QoS mechanisms to minimize the delay experienced by synchronization traffic. This is a corner­ stone of the design of the Alcatel-Lucent 7705 SAR. A built-in Stratum-3 clock is available in the control and switch module to assist in synchronization­ maintenance.

Features

•Cost-effective migration from E1/

T1-based backhaul to packet-based transport, leveraging Ethernet ser- vices over a wide range of first mile media.

•Resiliency and redundancy including: one-for-one hitless control and switch module failover, synchronization re- dundancy, network uplink resiliency and redundancy of power feeds.

•Powerful, service-aware OAM capabilities complemented by the Alcatel-Lucent 5620 management portfolio for GUI-based network and element configuration, pro- visioning, fault and performance management.

•Dense adaptation of multiple con- verged services onto an economical packet infrastructure.

•Extends service routing IP/MPLS capabilities to the cell site, hubs and network edge in a compact form factor.

•Dynamic tunnel signaling for scaling, ease of establishment and resiliency.

Benefits

•Transition from PDH-based connectivity­ to Ethernet-based can greatly reduce recurring operating expenditures such as line lease costs.

•Advanced resiliency features lead to improved network uptime, which can positively impact customer retention and allow critical services to be offered for increased revenue.

•Rapid fault detection and powerful commissioning and troubleshooting tools can improve productivity of operations staff and reduce network downtime.

•Multiprotocol and convergence capabilities (with flexible and granular QoS) reduce equipment instances needed to carry multiple fixed and mobile traffic streams.

•Modular, flexible architecture alleviates the burden of complex pre-engineering and future scenario planning.

Alcatel-Lucent 7705 SAR Data Sheet 3