40G is quite common, and probably the most cost effective high speed open on the ebay-old-enterprise-gear market or at least was for a long time until maybe just now.
I started to write that there are $30 single-fiber-pair CWDM pluggables for 40GB making it the fastest speed you can do cheaply at distances longer than realistic for DAC cables... but checking ebay I see that there are now 100G pluggables for $39, so maybe its time to update the last of my 40G hosts to 100G.
I started to write that there are $30 single-fiber-pair CWDM pluggables for 40GB making it the fastest speed you can do cheaply at distances longer than realistic for DAC cables... but checking ebay I see that there are now 100G pluggables for $39, so maybe its time to update the last of my 40G hosts to 100G.