At designated router election, the router priorities are evaluated first, and the router with the highest priority is elected designated router.
By default, routers have a priority of 128. A priority of 0 marks the router as ineligible to become the designated router. To configure a router so it is always the designated router, set its priority to 255.
To change the priority of a Services Router to control designated router election:
Table 140: Controlling Designated Router Election