Alcatel‑Lucent 3HE07158BA 7750 SR‑12 12‑Port 10GIGE IMM – MultiCore

The Alcatel‑Lucent 3HE07158BA is a high‑density interface module (IMM) for the 7750 Service Router (SR) chassis, specifically the SR‑12 model. This module provides 12 ports of 10 Gigabit Ethernet connectivity, leveraging a multicore network processor architecture to deliver wire‑speed forwarding, advanced QoS, and MPLS/segment routing capabilities. It is designed for service provider core and metro aggregation, as well as large enterprise data centre interconnect.

Product Architecture

The 3HE07158BA module, identified by the hardware code IPUCA741AA, integrates a powerful multi‑core CPU and dedicated hardware accelerators for packet processing. It supports both SFP+ and SFP+ direct‑attach copper (DAC) optics, offering flexibility for short‑reach and long‑reach connections. The module connects to the chassis backplane via a high‑speed fabric interface, achieving full line‑rate throughput for all 12 ports simultaneously.

The multicore design allows parallel processing of control and data plane functions, enabling complex service chaining, deep packet inspection, and hierarchical QoS without compromising performance. This makes it ideal for broadband network gateway (BNG), VPN termination, and carrier‑grade NAT (CGNAT) applications.

Technical Specifications

• Product Type: Interface Module (IMM)

• Part Number: 3HE07158BA

• Platform: 7750 SR‑12

• Ports: 12 x 10 Gigabit Ethernet (SFP+)

• Forwarding Capacity: 240 Gbps (full duplex)

• Processor: Multi‑core network processor (4‑core, 1.6 GHz)

• Memory: 8 GB DDR4 ECC, 2 GB flash

• Supported Protocols: MPLS, VPLS, EVPN, Segment Routing, IPv4/IPv6, BGP, OSPF, IS‑IS

• QoS: Hierarchical, with 8 priority queues per port

• Redundancy: Hot‑swappable with online insertion/removal

• Power Consumption: 120 W typical

• Operating Temperature: 0°C to 45°C

• Dimensions: Standard 7750 SR‑12 line card (single slot)

• Compliance: NEBS Level 3, RoHS

Key Features and Benefits

• High‑density 10GE reduces chassis footprint and per‑port cost.

• Multi‑core processing enables complex services at wire speed.

• Flexible optics support both copper and fibre SFP+ modules.

• Advanced programmability for custom packet processing.

• Integrated telemetry for real‑time performance monitoring.

Deployment Scenarios

This module is deployed in core IP/MPLS networks for traffic aggregation from metro access switches. It also serves as a high‑capacity BNG, terminating subscriber sessions with per‑user QoS policies. In data centre interconnect (DCI), it provides 10G connectivity between data centre routers and DWDM transport systems.

The IPUCA741AA variant includes enhanced security features such as hardware‑based ACLs and control plane protection.

Management and Integration

The module is managed through the 7750 SR's SROS operating system, with CLI, NETCONF, and SNMP interfaces. It supports in‑service software upgrades (ISSU) and provides detailed statistics per port.

Reliability

MTBF exceeds 180,000 hours. Redundant power inputs and ECC memory ensure high availability.

Conclusion

The Alcatel‑Lucent 3HE07158BA 12‑port 10GIGE IMM offers a powerful, scalable interface solution for the 7750 SR‑12, combining high density, multicore processing, and carrier‑grade reliability for demanding IP/MPLS networks.