County IT wants to gradually divert traffic off a core OSPF router before it is powered down for replacement. Which stub-router technique should they advertise first?
Select an answer to reveal the explanation.
Short Explanation
Max-metric is like putting ‘closed for remodeling’ on every aisle while the store is still open. Neighbors still see the router, but they stop preferring paths through it. That’s the gentle shove traffic needs before you pull the plug.
Full Explanation
Stub-router / max-metric advertisement marks the router’s transit LSAs as least desirable so SPF elsewhere selects alternate next hops while adjacencies may still exist. That gradual diversion is the intended maintenance drain pattern. Changing a single interface cost only affects that link, not the whole transit role. Discard routes and disabling BFD do not implement stub-router traffic engineering.