When to use CWDM and DWDM?

Hi all

I know you would use "generally" DWDM to get more channels than CWDM, CWDM is slightly less accurate than DWDM so optics are cheaper.

I need only two channels, but 10 Gbps, why do I need to deploy a mux DWDM rather than CWDM mux with an attached eDWM mux?

Additional info;

Unique dark fiber between two sites. I want Fibre Channel over Ethernet and 1 Gbps to 10 Gbps between sites. This isn't FCoE. Is it better to use DWDM here, and also anyone could recomment products that I would need to do this?

Thank you very much

J.

J,

There is nothing to stop you using only the filter eWDM supporting the wavelengths of 10 Gbit/s DWDM.  It would probably be better to install the EWDM-MUX8 at each end to allow future growth against the OADM-4.  You can always add the CWDM filter if you want some links additional 1Gpbs 'bandwidth '.

You did not mention what the distance was between facilities?  The datasheet shows 80km for the unamplified facilities 10G and 100km using the optical amplifier.

Good luck!

Tom

Tags: Cisco Network

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