SFP — Small Form-factor Pluggable
Definition
A hot-pluggable network transceiver form factor used for fiber and copper Ethernet connections, supporting speeds from 1 GbE to 100 GbE depending on variant.
Context & Usage
SFP variants by speed: SFP (1 GbE), SFP+ (10 GbE), SFP28 (25 GbE), QSFP+ (40 GbE), QSFP28 (100 GbE), QSFP-DD (400 GbE). All share the same physical form factor with newer versions supporting higher speeds. Modules are coded for vendor compatibility (Cisco, Aruba, Arista) — third-party "compatible" modules are pre-coded for the target vendor.
Examples
- Cisco SFP-10G-SR (10 GbE multimode)
- HPE J9150D (10 GbE Aruba)
- Arista QSFP-100G-SR4
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