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IP Leased Line Aggregation
While Service Providers have seen the volume of IP services for Public Internet access and Private IP VPNs continue to grow at a rapid pace, the cost of deploying routers for aggregating this traffic has not dropped commensurately. In fact, Service Providers who currently deploy a large number of DS1, DS3 and OC-n interfaces have been stuck with either legacy aggregation solutions or stubbornly expensive edge and core router ports when used in an aggregation role. As a result, Service Providers throughout the telecom industry are looking for a more cost-effective leased line IP aggregation solution that will allow them to do two things. First they would like the ability to groom and aggregate customer edge (CE) facing PPP, MLPPP, and HDLC traffic from many DS1, DS3 and OC-n circuits in the most efficient, cost-effective manner. Secondly, they want to multiplex all of this traffic and feed these packets to the backbone routers via Gigabit Ethernet and 10 Gigabit Ethernet links using Link Aggregation for protection. This is both more efficient than using POS trunks, and is lower cost for both the aggregator and the router ports.
For Service Providers looking to reduce the CAPEX and OPEX of their IP Leased Line infrastructure, the HSX 6000 is an optimal aggregation solution due to its Bandwidth Pooling Innovation that provides an architectural advantage for efficiently aggregating and grooming large volumes of PPP and MLPPP traffic over DS1/E1 and DS3/E3 circuits via a Channelized OC-12 interface while fully utilizing the data plane forwarding capacity. The system can aggregate thousands of PPP connections from CE routers into one or multiple Gigabit/10Gigabit Ethernet trunks feeding the PE routers. Each PPP/MLPPP connection can be interworked to become a VLAN connection feeding the core. These trunks can then be transported over the MPLS network as Pseudowires further alleviating the need to change out the legacy interfaces on the CE devices. In addition to providing aggregation support, the HSX 6000 enables robust OAM and QoS with extensive traffic policing and scheduling capabilities while maintaining the superior scalability and flexibility of IP networks. Some of these feature highlights include: Bandwidth Pooling – Eliminates the traditional 1:1 fixed mapping of traffic between the physical interface modules and the system’s processing or data forwarding modules, which historically burdens a traditional router design and economics with stranded bandwidth and artificial engineering constraints on module placement within a chassis. In the HSX 6000, the Bandwidth Pooling switch provides flexible connectivity between any PHM and any USM (forwarding module), thus guaranteeing that PHMs can be efficiently mapped to a processing engine up to the fully rated capacity of each USM. Efficient Grooming – The HSX 6000 provides high speed Ethernet links that will allow service providers to reduce the cost of having to use high-end routers with high POS port costs. In addition the HSX 6000 provides both equipment and facility protection over these Ethernet interfaces using Link Aggregation. Port Density – The HSX 6000 provides optimal port densities which results in cost efficiencies. It supports a high fan in of low speed interfaces and high speed interfaces all into one platform to support a broad range of Ethernet and circuit-based service interfaces. QoS – The HSX 6000 has an advanced hierarchical QoS implementation, providing unmatched scalability, flexibility, and traffic policing and scheduling granularity and fairness. This sophisticated QoS process is designed to aggregate and carry voice, video, and data traffic over a common network while maintaining the highest system performance levels possible. OAM -- The HSX 6000 has an extensive OAM implementation for IP traffic, including BFD, VCCV and LSP-Ping. With these capabilities, the HSX 6000 is well-positioned for deployment within the metro for IP Leased Line Aggregation and for handoff to the core for IP transport. |
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