{"product_id":"cisco-glc-bx-u80-glc-bx-d80-compatible-1-25g-sfp-bidi-transceiver","title":"Cisco GLC-BX-U80 \/ GLC-BX-D80 Compatible 1.25G SFP BIDI Transceiver","description":"\u003cp\u003eIn this review the author tests the Jeirdus-compatible SFP pair designed for Cisco GLC-BX-U80 and GLC-BX-D80 modules and finds it most useful for network engineers needing reliable, long-reach bidirectional optics without vendor lock-in. The bottom line: these SFP BIDI transceivers deliver stable 1.25Gbps connectivity over a single LC for up to 80km and include DDM\/DOM monitoring, so they are a practical option for field upgrades and spare inventory where Cisco compatibility and tested performance matter.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Built to work with Cisco GLC-BX-U80 and GLC-BX-D80, reducing integration time with common switches and routers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBidirectional WDM:\u003c\/strong\u003e Supports 1000BASE-BX-U and 1000BASE-BX-D to send and receive over a single LC fiber for simpler cabling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong reach:\u003c\/strong\u003e Rated to reach up to 80km, enabling long-distance links between data centers or remote sites without additional amplification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDDM\/DOM support:\u003c\/strong\u003e Digital diagnostics provide real-time monitoring of optical parameters for easier maintenance and troubleshooting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality assurance:\u003c\/strong\u003e Each transceiver is individually tested in Jeirdus compatibility lab to meet coding requirements for many switch and router brands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty and compliance:\u003c\/strong\u003e Constructed from 100% new materials with CE and FCC indications and backed by a 3 year replacement plus a lifetime warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eNetwork administrators and installers who need a cost-effective, vendor-compatible replacement for Cisco GLC-BX series modules will appreciate these transceivers. They suit point-to-point fiber links, campus backbone extensions, and service provider drops that require simplex LC cabling and long reach without changing existing optics.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere are users requiring multi-rate SFPs beyond 1.25Gbps, or environments that mandate original OEM-labeled optics for strict asset tracking or warranty terms. For basic Gigabit fiber links and spare pool inventory, this product is a strong fit.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with Cisco GLC-BX-U80 and GLC-BX-D80, easing deployment in mixed environments.\u003c\/li\u003e\n\u003cli\u003eSupports up to 80km over a single LC using bidirectional WDM, cutting fiber cabling needs.\u003c\/li\u003e\n\u003cli\u003eIncludes DDM\/DOM for live monitoring, which helps with troubleshooting and maintenance.\u003c\/li\u003e\n\u003cli\u003eEach unit is tested in a compatibility lab and comes with a replacement warranty and lifetime support.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOperates at a fixed 1.25Gbps rate, so it is not suitable for networks that require multi-rate flexibility.\u003c\/li\u003e\n\u003cli\u003eNot an OEM-labeled Cisco part, which may matter for organizations with strict vendor policies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eSFP (1.25G)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eCisco GLC-BX-U80 and GLC-BX-D80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelengths\u003c\/td\u003e\n\u003ctd\u003eUp TX1490nm \/ RX1550nm; Down TX1550nm \/ RX1490nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eSingle LC simplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDistance\u003c\/td\u003e\n\u003ctd\u003eUp to 80km\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeatures\u003c\/td\u003e\n\u003ctd\u003eBidirectional WDM, DDM\/DOM support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterials \u0026amp; Compliance\u003c\/td\u003e\n\u003ctd\u003e100% new materials, CE, FCC; 3 year replacement + lifetime warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Jeirdus-compatible GLC-BX-U80\/GLC-BX-D80 SFP pair is a practical, well-tested alternative for Gigabit long-reach links where Cisco compatibility and DDM monitoring are required. It offers strong value for network teams that need dependable 80km simplex connections without OEM pricing, though organizations demanding multi-rate optics or strict OEM-only inventory should consider other options.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these transceivers compatible with Cisco switches?\u003c\/strong\u003e\u003cbr\u003eYes, they are designed for compatibility with Cisco GLC-BX-U80 and GLC-BX-D80 modules and are verified in Jeirdus compatibility labs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these modules support diagnostic monitoring?\u003c\/strong\u003e\u003cbr\u003eYes, they include DDM\/DOM support to monitor optical parameters such as transmit power and temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum supported distance?\u003c\/strong\u003e\u003cbr\u003eEach transceiver is rated to reach up to 80km over singlemode fiber using a simplex LC connection.\u003c\/p\u003e","brand":"Jeirdus","offers":[{"title":"Default Title","offer_id":48236780781787,"sku":"B07D5FC7GV","price":98.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71y7Nibv55L._AC_SL1500.jpg?v=1770907820","url":"https:\/\/gearmusthave.com\/products\/cisco-glc-bx-u80-glc-bx-d80-compatible-1-25g-sfp-bidi-transceiver","provider":"GearMustHave","version":"1.0","type":"link"}