Cisco XFP-10G-BX40U Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 10GBASE-BX40-U XFP Single-Fiber Bidirectional Single-Mode Optical Transceiver Module with Digital Optical Monitoring Support
SKU:XFP-10G-BX40U
Naming Breakdown
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XFP: 10 Gigabit Small Form-factor Pluggable, hot‑swappable transceiver compliant with XFP MSA Revision 4.5
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10G: Supports serial bitrates ranging from 9.953 Gbps up to 10.3125 Gbps
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BX40: Bidirectional 10G transmission over one single fiber strand, maximum reach of 40 km
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U: Upstream; Transmit at 1270 nm, Receive at 1330 nm
Critical Pairing Rule: XFP-10G-BX40Umust be deployed in pairswith XFP-10G-BX40D on the opposite end over one simplex single-mode fiber. Mismatched wavelength pairs will cause link failure.
Core Product Positioning
The Cisco XFP-10G-BX40U is a hot‑swappable commercial-grade bidirectional XFP optical transceiver delivering 10G full-duplex traffic over asingle strand of single-mode fiber. It optimizes limited fiber resources for service provider metro aggregation links, enterprise metropolitan inter-building circuits and legacy modular XFP chassis upgrades. Integrated DOM/DDM enables continuous real-time monitoring of optical operating parameters.
2. Hardware & Software Compatibility
Supported Host Platforms
Cisco Catalyst 6500 / 6800 Series; Nexus 7000 / Nexus 7700 Series; ASR1000, ASR9000 Routers; MDS 9000 Storage Switches; CRS Carrier Routing System and other chassis equipped with XFP interface slots.
Verify Cisco official transceiver compatibility matrix and minimum firmware release before deployment.
Supported Operating Systems
IOS, IOS-XE, IOS-XR, NX-OS releases supporting XFP MSA and SFF‑8472 DDM diagnostic functions.
Supported Fiber Type
Single‑Mode Fiber (SMF) G.652 (9/125μm) only; incompatible with multimode fiber.
Connector
Simplex LC optical connector.
3. Physical & Optical Performance Specifications
Form Factor
Hot‑swappable XFP, compliant with XFP MSA Rev 4.5
Optical Interface
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Transmit Wavelength: 1260 nm ~ 1280 nm (nominal 1270 nm DFB Laser)
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Receive Wavelength: 1320 nm ~ 1340 nm (nominal 1330 nm)
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Supported Bit Rates:
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10.3125 Gbps: 10GBASE Ethernet (LAN PHY)
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9.953 Gbps: OC‑192 / STM‑64 compatible WAN PHY
Maximum Transmission Reach
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Up to40 kmover standard G.652 single-mode fiber
Optical Power Budget
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Average Transmit Optical Power: -2.7 dBm ~ +4.5 dBm
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Receiver Sensitivity: Minimum -21.2 dBm
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Maximum Allowable Received Power: -9 dBm
Digital Diagnostics
DOM / DDM (Digital Diagnostic Monitoring) Supported
Monitors module internal temperature, supply voltage, laser bias current, transmit optical power and receive optical power.
Environmental Operating Parameters (Commercial Grade)
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Operating Temperature:0°C ~ +70°C (32°F ~ 158°F)
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Storage Temperature: -40°C ~ +85°C (-40°F ~ 185°F)
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Relative Humidity: 5% – 95%, non‑condensing
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Maximum operating altitude: 3,000 meters
Typical Power Consumption
4. Supported Functional Capabilities
Transport Support
Wire-speed full-duplex 10 Gigabit Ethernet (LAN PHY & WAN PHY); OC‑192 / STM‑64 Packet over SONET (POS)
Layer 2 Protocol Support
802.1Q VLAN trunking, 802.3x pause frame flow control, LACP, STP/RSTP/MSTP, EtherChannel link aggregation
Interface Diagnostics
Link status detection, error counters, DOM real-time optical telemetry, LOS (Loss of Signal) indication, local loopback testing
High Availability
Supports OIR online insertion and removal on compatible modular chassis; supports link redundancy via port-channels and spanning tree protocols
Operations & Management
IOS / IOS-XR / NX-OS CLI, SSH, SNMP v2c/v3, Syslog logging
5. Typical Deployment Scenarios
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Metro aggregation links constrained by limited single-mode fiber resources
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Enterprise inter-building 10GE connections requiring fiber capacity optimization
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Mobile service backhaul utilizing existing single-fiber infrastructure
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Network renovation projects without new fiber cabling construction
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Spare replacement transceiver for legacy Cisco modular chassis equipped with XFP interfaces
6. Regulatory & Compliance Certifications
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Safety Standards: UL 60950‑1, IEC/EN 60950‑1, CSA C22.2 No.60950‑1
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EMC Compliance: CE Mark, FCC Part 15 Class A, ICES‑003 Class A
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Laser Safety: Class 1 Laser Product per IEC 60825‑1
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Industry Standards: XFP MSA Rev4.5, SFF‑8472
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Environmental: RoHS compliant, WEEE directive compliant
7. Standard Factory Package Contents
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Cisco XFP-10G-BX40U XFP Optical Transceiver
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Hardware installation guide
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Safety and regulatory documentation
Simplex LC single-mode fiber patch cords sold separately. Must pair with XFP-10G-BX40D on the remote side.
Lifecycle Notice
The Cisco XFP transceiver family has reached End-of-Sale (EoS); available inventories are limited. Recommended migration alternative: SFP-10G-BX40U SFP+ transceiver.
Model Comparison Reference
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XFP-10G-BX40U: Commercial temperature, BiDi SMF 40km, 1270nm-TX/1330nm-RX
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XFP-10G-BX40D: Mating paired module, 1330nm-TX/1270nm-RX
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XFP-10G-LR: Dual-fiber 10 km single-mode XFP module
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SFP-10G-BX40U: Compact SFP+ form factor equivalent bidirectional transceiver
UNSPSC Classification Code
43222618 – Cisco XFP-10G-BX40U single-fiber bidirectional XFP transceiver with DOM, hot‑swappable 10 Gigabit optical module for fiber-saving metro and enterprise networking applications.
Hardware Warranty
Original Cisco transceivers are covered under Cisco limited hardware warranty; refurbished stock follows respective reseller warranty terms.
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