Zarlink introduced its new ClassSwitch silicon aimed at line cards or compact systems deployed in Central Offices, Cable Head-Ends or Customer Premises Equipment that must aggregate, inspect and modify multiple real-time applications delivered over Fast and Gigabit Ethernet. The devices enable IP multicast packet-forwarding service distribution, a key element in the delivery of IP video.
Packets entering the devices are classified to a flow based on user-defined rules, using information such as frame source and destination address or applications using L2 (Layer 2) to L7 (Layer 7) fields of incoming packets. Up to 1,024 distinct flows can be created per device. The architecture supports per-flow two-rate, three-color metering and policing. Scheduling algorithms, such as SP (strict priority) and WFQ (weighted fair queuing), manage packets and prioritize queued traffic.
Additional traffic flow classification features allow operators to better manage service level agreements and access control. With multiple classification fields, network operators can precisely monitor network traffic, ensure packets are forwarded to specific ports, specify transmission and dropping priorities, and maintain secure connections for their customers.
The first two devices in the ClassSwitch line includes the ZL33042 with 24 FE (Fast Ethernet) + 2 GE (Gigabit Ethernet) port configurations and the ZL33046 Ethernet switch delivering 16 FE + 2 GE port configurations. Future devices will incorporate lower and higher data throughput and optional port count configurations.
“With the demand for IP video applications over packet networks and escalating security threats, operators must guarantee proper handling of IP multicast traffic while ensuring policy off-load and content protection,” said Mauricio Peres, product line director, Packet Switching, Zarlink Semiconductor. “Our carrier-grade ClassSwitch platform integrates advanced packet identification and user flow policing, metering and filtering to support effective IP policy provisioning, allowing network operators to efficiently deliver advanced applications.”http://www.zarlink.com
