Nokia 3HE08021AA SFM-B Switch Fabric Module | 7950 XRS-20

Nokia (Alcatel-Lucent) 3HE08021AA SFM-B Switch Fabric Module for 7950 XRS-20

3HE08021AA is the SFM‑B (Switch Fabric Module X20 B) for the Nokia 7950 XRS‑20 core router chassis. It provides high-speed non-blocking switching fabric to interconnect all XCM carrier boards and XMA/C-XMA daughter cards inside the chassis, delivering full cross-band forwarding capacity for high-density core routing deployments.

Key Features

• Part Number: 3HE08021AA (SFM‑B / SFM X20 B)
• High-speed non-blocking switching fabric for 7950 XRS‑20 router chassis
• Interconnects all XCM carriers and XMA / C-XMA interface modules
• Hot-swappable for in-service replacement and fabric redundancy
• Supports high-density interface configurations (required for 40-port 10GE XMA cards)
• Deployable in redundant fabric groups to maximize system uptime

Platform Compatibility

Exclusively designed for Nokia 7950 XRS‑20 core router chassis. This SFM X20 B variant is required to operate high-density 40-port 10GE SFP+ XMA daughter cards; older standard SFM X20 modules do not support these high-density line cards.

Our Stock Advantage

Original tested Nokia 3HE08021AA SFM‑B fabric modules in stock. Full functional testing before shipment, ideal for chassis upgrade, spare replacement and network expansion projects worldwide.