Configuring Interface Priority to Become the PIM Designated Router
By default, a PIM interface has the lowest probability of being selected as the designated router (DR). To change this, include the priority statement:
priority number;
For a list of the hierarchy levels at which you can include this statement, see the statement summary section for this statement.
The default priority is 1. Use a larger number to increase the probability of the interface's being elected as the DR.
