When we buy new device such as 3Com 1000BASE-LH70 (3CSFP97) we often through away most of the documentation but the warranty.
Very often issues with 3Com 1000BASE-LH70 (3CSFP97) begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Network Router 3Com 1000BASE-LH70 (3CSFP97) is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Network Router on our side using links below.