I'm wondering if anyone has seen a good and cheap(er) solution for providing multiple Gigabit Ethernet circuits over single pair of fiber. I'm looking for a way to do CWDM or DWDM that's cheaper than putting in a Cisco 15454 or 15327. I'm only going to be doing 2 GigE circuits between two switches, so I don't need to plan for future growth.

If you only need two GigE circuits, the least expensive solution is probably standard LX/LH GBICs and passive splitter/combiners. Available from several vendors, for instance http://www.mrv.com/product/MRV-FD-SPLTCMB/ Disclaimer: I have no practical experience with this product. Steinar Haug, Nethelp consulting, sthaug@nethelp.no