What effect does the structure of the lines in the poem "ulysses" (for example, run-ons, broken lines, stressed-unstressed pattern) have on the tone of the poem?

The structure of the lines creates a tone that reflects restlessness and change. Blank verse gives the poem a natural, narrative flow, while the iambic pentameter gives it a rhythm that sounds like action and movement. The run-on, or enjambed, lines and those that end a sentence mid line (caesura) create a feeling of starting and stopping, of lingering and darting, that echoes the poem's celebration of travel:

I cannot rest from travel: I will drink 
Life to the lees: All times I have enjoy’d
Greatly . . .

The reader has to extend "I will drink" to the next line to see the enthusiasm of "Life to the lees." Then the reader must stop with the new sentence and again stretch enjoy'd to its amplifying modifier Greatly.