Alcatel Lucent IMM48-1GB-TX 3HE03625AAG01 48-Port 7750 SR-12 Interface Module

The Alcatel Lucent IMM48-1GB-TX (3HE03625AAG01) is a high‑density 48‑port Gigabit Ethernet interface module purpose‑built for the 7750 SR‑12 service router. This module provides carrier‑grade copper connectivity for enterprise WAN, metro Ethernet, and data center interconnect networks. With its robust feature set, the IMM48‑1GB‑TX enables service providers and large enterprises to scale their networks while maintaining deterministic performance, high availability, and sophisticated traffic engineering.

Overview

Designed as a key line card for the Alcatel‑Lucent 7750 SR‑12 chassis, the IMM48‑1GB‑TX offers 48 independent 10/100/1000Base‑T ports. Each port supports auto‑negotiation and MDI/MDIX crossover, simplifying cable deployment. The module operates at wire speed across all ports, ensuring that even when fully populated, the forwarding capacity remains uncompromised. It integrates seamlessly with the SR‑12’s switch fabric and control plane, allowing operators to deploy advanced Layer 2 and Layer 3 services with minimal latency.

Key Features

• 48x 10/100/1000Base‑T RJ‑45 ports with auto‑negotiation and auto‑MDI/MDIX

• Full line‑rate forwarding at 1 Gbps per port, aggregate 48 Gbps switching capacity

• Advanced hierarchical quality of service (HQoS) with shaping, policing, and WRED

• Extensive Layer 2 features: 802.1Q VLAN, 802.1ad QinQ, 802.3ah EFM, and Link Aggregation (LACP)

• Layer 3 routing: OSPF, IS‑IS, BGP‑4, and static routes with IPv4 and IPv6 dual‑stack

• MPLS and MPLS‑TP support for VPLS, VPWS, and L3VPN services

• Integrated security via ACLs, port security, and MAC limiting

• Hot‑swappable design for field replacement without chassis power‑down

• Management via CLI, SNMPv3, NETCONF, and the Alcatel‑Lucent 5620 SAM

Technical Specifications

• Port Density: 48 × RJ‑45 10/100/1000Base‑T

• Switching Capacity: 48 Gbps full‑duplex

• Packet Forwarding Rate: 72 Mpps (64‑byte packets)

• On‑board Buffer: 2 GB packet buffer memory

• MAC Address Table: 128,000 entries

• VLAN Support: Up to 4094 VLANs per port, QinQ stacking

• Jumbo Frame: Up to 9216 bytes

• Power Consumption: 150 W typical

• Operating Temperature: 0°C to 45°C

• Storage Temperature: -40°C to 70°C

• Relative Humidity: 5% to 95% non‑condensing

Applications

The IMM48‑1GB‑TX is ideal for high‑density aggregation at the edge of service provider networks, enterprise campus distribution, and data center top‑of‑rack deployments. Its rich MPLS/VPLS capabilities make it a strong choice for metro Ethernet services, business VPNs, and mobile backhaul aggregation. In the 7750 SR‑12, this module works alongside other line cards and switch fabric modules to create a resilient, high‑capacity routing platform that meets the most demanding SLAs.

Compatibility and Integration

This module is fully compatible with the 7750 SR‑12 chassis and requires the SR‑12 backplane and power supplies. It operates with SR OS releases that support the IMM hardware; advanced features like Segment Routing and EVPN require appropriate software licenses. For redundancy, the module supports graceful restart and non‑stop routing when paired with redundant control processors. Its hot‑swap capability allows operators to add or replace ports without service disruption.

Installation and Maintenance

Installation follows standard field‑replaceable unit (FRU) procedures: power down the slot, insert the module into the designated slot, and secure the ejector handles. After power‑up, the system automatically discovers the card and loads the appropriate firmware. Routine maintenance includes monitoring port statistics, environmental thresholds, and performing software upgrades via the management interface. The module includes diagnostic LEDs for link status, activity, and fault indication, simplifying troubleshooting.

Conclusion

The Alcatel Lucent IMM48‑1GB‑TX 3HE03625AAG01 is a proven, high‑performance interface module that delivers dense Gigabit Ethernet connectivity with carrier‑class intelligence. Its combination of line‑rate throughput, advanced QoS, MPLS capabilities, and seamless chassis integration makes it an essential building block for modern IP/MPLS networks. Whether used for enterprise aggregation, metro service delivery, or data center interconnection, this module ensures reliable, scalable, and feature‑rich network operation.