{"product_id":"for-extreme-1-25g-bidi-sfp-module-10-20km-compatible-reliable-link","title":"for Extreme 1.25G BIDI SFP Module 10-20KM Compatible - Reliable Link","description":"\u003cp\u003eIn this review the reviewer looks at a pair of 1.25G SFP BIDI transceivers compatible with Extreme 10056 and 10057 models, aimed at network engineers and IT teams needing a cost-effective bidirectional fiber link. The bottom line: these modules deliver a straightforward, carrier-class replacement for OEM optics, supporting up to 20km over a single LC simplex connection. The reviewer found them useful for extending existing fiber runs without recabling, with clear compatibility notes and factory testing that reduce deployment risk.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Works with Extreme 10056 and 10057 SFP slots and is stated to be compatible with Cisco gear, allowing easy swap-in replacements for common switches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBidirectional Operation:\u003c\/strong\u003e Supports 1000BASE-BX-U and 1000BASE-BX-D to carry transmit and receive on a single fiber, saving cabling and port resources.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange:\u003c\/strong\u003e Rated for up to 20km over single-mode fiber which meets many campus and metro edge link requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWavelength Pairing:\u003c\/strong\u003e Uses TX1310nm\/RX1550nm for one direction and TX1550nm\/RX1310nm for the opposite side, matching standard WDM pairing for simplex LC connectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assurance:\u003c\/strong\u003e Each transceiver is tested individually and backed by CE and FCC compliance plus a three year replacement and lifetime warranty for peace of mind.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is best for network administrators who need a plug-and-play replacement for failed or missing SFP modules on Extreme 10056\/10057 switches, or for teams seeking cost-effective WDM simplex links between buildings. The modules suit scenarios where conserving fiber strands and switch ports is important.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users requiring multi-rate SFPs, active optical cable solutions, or links beyond single-mode 20km. If you need vendor-certified optics for a highly regulated procurement, check your policy before choosing third-party transceivers.\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\u003eDirect compatibility with Extreme 10056 and 10057 helps avoid configuration headaches when replacing optics.\u003c\/li\u003e\n\u003cli\u003eWDM BIDI design reduces fiber usage by carrying both directions on one LC simplex connection.\u003c\/li\u003e\n\u003cli\u003eIndividual testing and a multi-year replacement warranty provide reliability and reduced deployment risk.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLimited to 1.25Gbps and single-mode ranges up to 20km, so it is not suitable for higher-speed or longer-haul links.\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 Bidi Transceiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Rate\u003c\/td\u003e\n\u003ctd\u003e1.25Gb\/s\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\u003eWavelengths\u003c\/td\u003e\n\u003ctd\u003eUp TX1310nm \/ RX1550nm; Down TX1550nm \/ RX1310nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Standards\u003c\/td\u003e\n\u003ctd\u003e1000BASE-BX-U and 1000BASE-BX-D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Distance\u003c\/td\u003e\n\u003ctd\u003eUp to 20km\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 year replacement and lifetime warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThese 1.25G SFP BIDI modules are a practical, cost-effective option for teams needing reliable simplex fiber links on Extreme 10056 and 10057 hardware. They offer solid compatibility, individual testing, and a reassuring warranty, making them good value when 1Gbps capacity and 20km range meet network requirements.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these transceivers work in Cisco switches?\u003c\/strong\u003e\u003cbr\u003eYes, the product notes compatibility with Cisco and the modules are coded in a compatibility lab to meet many vendor requirements, but always test in your environment first.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need two modules for a full duplex link?\u003c\/strong\u003e\u003cbr\u003eYes, a pair is required: one configured for the up direction and the other for the down direction to create a bidirectional link over a single fiber.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these new or refurbished units?\u003c\/strong\u003e\u003cbr\u003eThe modules are described as made from 100% new materials and individually tested before delivery.\u003c\/p\u003e","brand":"Jeirdus","offers":[{"title":"Default Title","offer_id":48612071342299,"sku":"B07D5F9H4H","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51VG_GzE6bL._AC.jpg?v=1778414975","url":"https:\/\/gearmusthave.com\/products\/for-extreme-1-25g-bidi-sfp-module-10-20km-compatible-reliable-link","provider":"GearMustHave","version":"1.0","type":"link"}