AddOn Cisco GLC-LH-SMD Compatible SFP Transceiver - SFP (mini-GBIC) transceiver module - 1GbE - 1000Base-LX - LC single-mode - up to 10 km - 1310 nm - for Cisco 4451, Catalyst ESS9300, Integrated Services Router 11XX, Nexus 93180, 93XX, UCS 62XX

Product Overview

AI-generated summary

For £21.26 ex‑VAT, this is the kind of SFP you buy when you want the link to work and you don’t want to overthink it. It’s a single‑mode 1GbE LX module intended for 10 km class runs, and in day-to-day reseller/customer deployments it typically does exactly what it should: get you stable fibre connectivity over LC single‑mode without drama. If you’ve got Cisco kit on the list and you’ve already standardized on these optics (or you’re refreshing spare stock), it’s a decent value option.

That said, I’d only recommend it to teams who know their platform’s optics compatibility story. Some Cisco switches/routers are picky about third‑party optics (they may “work” but with warnings, reduced diagnostics, or outright refusal depending on firmware). Before you trust it in production, it’s worth testing one module in the exact model/IOS/firmware combination you’re deploying. If you’re running mission‑critical links, you’ll usually get fewer surprises with genuine Cisco optics—so this is best for non-critical redundancy, lab/testing, or sites where you can swap quickly if a platform doesn’t like it.