I'm sure this is a n00b question but there are plenty of QSFP+ to 4x SFP+ DACs on the market. I've seen a Mellanox 1x QSFP+ to 1x SFP+ DAC cable and an optics module each for sub $20. Is there a way to go from 1x QSFP+ to 4x SFP+ optics? SR okay/ preferable.
I'm thinking of getting an Arista 40GbE switch for the data center then using one of the QSFP+ ports for SFP+ optics as a WAN connection. Have the four SFP+ ports on a VLAN so I can have the optics to the data center and two SFP+ to the firewalls internally. Then I'd keep everything else in the rack either on SFP+ DACs --OR-- mostly 40Gb. I don't want to lose a 40Gb port for a single 10Gb WAN.
I asked what the 40Gb WAN costs and there were too many MRC zeros.
I'm thinking of getting an Arista 40GbE switch for the data center then using one of the QSFP+ ports for SFP+ optics as a WAN connection. Have the four SFP+ ports on a VLAN so I can have the optics to the data center and two SFP+ to the firewalls internally. Then I'd keep everything else in the rack either on SFP+ DACs --OR-- mostly 40Gb. I don't want to lose a 40Gb port for a single 10Gb WAN.
I asked what the 40Gb WAN costs and there were too many MRC zeros.