Questions tagged “multimode”

5votes

1 answer

230views

Choosing SFP modules for a MikroTik CRS328 to HP 1820 link and outdoor fibre

The poster needed to connect a MikroTik CRS328-4C-20S-4S+RM to an HP 1820-24G-PoE+ over 200-500 m of outdoor aerial fibre and asked which SFP modules to buy and how to verify compatibility before purchase. The HP compatibility table listed only J4859C as a single-mode SFP, while MikroTik offered…

link_eng21 asked 10 days ago

4votes

2 answers

125views

Can single-mode SFP modules run over an old 200 m multimode fibre?

The poster had an existing multimode fibre run of about 200 m that could not be replaced and only single-mode SFP modules available. The question was whether a 1G single-mode SFP pair would establish a stable link over multimode fibre, and what the practical limits were. The thread also raised the…

1g fibre-mismatch link-budget multimode single-mode

dwdm_ops44 asked 10 days ago