Cisco WS-G5489 Full Official Product Description
1. Part Number & Naming Definition
Commercial Full Name
Cisco 1000BASE-BX BiDi Single-Fiber Gigabit GBIC Optical Transceiver Module
SKU:WS-G5489
Naming Breakdown
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WS: Cisco Catalyst Switch hardware prefix
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G: Gigabit Ethernet
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5489: Market designation for BiDi GBIC transceiver
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BiDi: Bidirectional single-fiber transmission over one strand of single-mode fiber
Core Product Positioning
The Cisco WS-G5489 is a hot‑swappable MSA‑compliant GBIC transceiver implementing 1000BASE-BX bidirectional Gigabit Ethernet over a single strand of single-mode fiber. It conserves fiber resources by enabling transmit and receive signals to share one fiber strand, ideal for campus building interconnections where fiber pairs are limited. It operates seamlessly with legacy Catalyst modular switches equipped with GBIC slots, supporting cost-effective network expansion on existing single-fiber cabling infrastructure. Deployments require paired opposite-wavelength BiDi GBICs at each end of the link.
2. Hardware & Software Compatibility
Supported Host Platforms
Cisco Catalyst 4000, 4500, 5000, 6000, 6500 Series modular switches with GBIC interface slots
Supported IOS Releases
All mainstream Cisco IOS firmware versions with native GBIC transceiver recognition
Supported Fiber Type
Single‑Mode Fiber (SMF, 9/125μm) only; incompatible with multi‑mode fiber
Unsupported Platforms
SFP‑only switches, Nexus data center switches, MDS SAN directors, ISR routers
Reminder: GBIC cannot be directly inserted into SFP slots without dedicated adapter hardware.
3. Physical & Optical Performance Specifications
Form Factor
Hot‑swappable GBIC module compliant with GBIC MSA specification
Optical Interface
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Wavelength variants: Two matched types (TX1310/RX1490 nm or TX1490/RX1310 nm)
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Connector: Duplex SC
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Data Rate: 1.25 Gbps wire‑speed Gigabit Ethernet
Maximum Transmission Reach
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Standard single‑mode fiber: Up to 10 km
Optical Power Budget
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Transmit Power: -5 dBm ~ 0 dBm
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Receiver Sensitivity: Minimum -18 dBm
Digital Diagnostics
No Digital Diagnostic Monitoring Interface (DDMI) support
Environmental Operating Parameters
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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: 10% – 90%, non‑condensing
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Maximum operating altitude: 3,000 meters
Typical Power Consumption
4. Supported Functional Capabilities
Ethernet Transport
Wire‑speed Gigabit Ethernet transmission, auto‑negotiation, full‑duplex operation
Layer 2 Protocol Support
802.1Q VLAN trunking, 802.3x flow control, LACP, STP/RSTP/MSTP, EtherChannel aggregation
Interface Diagnostics
Link status detection, port error counters, local loopback testing
High Availability
OIR hot‑swap capability on supported Catalyst chassis; link redundancy via spanning tree or port channels
Operations & Management
IOS CLI, SSH, SNMP v2c/v3, Syslog logging, real‑time interface statistics monitoring
5. Typical Deployment Scenarios
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Campus inter-building connections with limited available single-mode fiber strands
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Metropolitan network link expansion without laying new fiber cables
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Remote site interconnection utilizing existing single-fiber infrastructure
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Legacy Catalyst 6500 core switch uplink capacity expansion projects
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Spare replacement transceiver hardware for existing GBIC‑based Catalyst switching environments
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, VCCI Class A
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Laser Safety: Class 1 Laser Product per IEC 60825‑1
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Environmental: RoHS 2.0 compliant, WEEE directive compliant
7. Standard Factory Package Contents
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Cisco WS-G5489 1000BASE-BX BiDi GBIC Transceiver
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Hardware installation guide
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Safety and regulatory documentation
Note: Fiber patch cables and the matching opposite-wavelength BiDi GBIC at the far end are sold separately.
End-of-Sale Status
The GBIC form factor including BiDi variants has reached Cisco End‑of‑Sale. Spare inventory is available through authorized spare distributors and secondary hardware markets. Recommended migration: 1000BASE-BX SFP transceivers for modern SFP‑based switching platforms.
UNSPSC Classification Code
43222618 – Cisco WS-G5489 1000BASE-BX BiDi GBIC optical transceiver, hot‑swappable single-fiber bidirectional Gigabit single‑mode fiber module for legacy Catalyst modular enterprise switches.
Hardware Warranty
Original factory hardware carries Cisco limited hardware warranty; refurbished equipment follows reseller commercial warranty terms.
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