Industrial M8004R-1000GB Layer 2 Gigabit Ethernet Switch

Avaya-Lucent M8004R-1000GB is a four‑port Layer 2/3/4 Gigabit Ethernet module with GBIC interfaces intended for Avaya Cajun 80‑series chassis. The P880 4‑port module provides four GBIC ports that accept external GBIC transceivers to support 1 Gbps links, and this M8004R‑1000GB designation is associated with part numbers 570-0356-192, 700013071, and 4589-803. This is an add‑in module rather than a standalone switch, designed to extend a compatible Avaya switch with additional gigabit connectivity while preserving the parent device’s management, VLAN, and QoS features. When GBIC modules are installed, it enables four flexible uplinks or inter‑switch connections at 1 Gbps per port, suitable for industrial networking environments where dense, modular gigabit connectivity is required.