Juniper Service Provider Routing and Switching, Specialist (JNCIS-SP) JN0-363 Question # 28 Topic 1 Discussion
JN0-363 Exam Topic 1 Question 28 Discussion:
Question #: 28
Topic #: 1
You are bringing a new network online with three IS-IS routers using default Junos election priorities. The routers are configured as Level 2 only IS-IS routers. Which statement is true about the DIS election in this scenario?
A.
The router with the highest MAC address will be elected as the DIS.
B.
The router with the highest numerical lo0 IP address will be elected as the DIS.
C.
The router with the lowest numerical lo0 IP address will be elected as the DIS.
D.
The router with the lowest MAC address will be elected as the DIS.
A router’s priority for becoming the designated router is indicated by an arbitrary number from 0 through 127, which you configure on the IS-IS interface. The router with the highest priority becomes the designated router for the area (Level 1, Level 2, or both), also configured on the IS-IS interface. If routers in the network have the same priority, then the router with the highest MAC address is elected as the designated router. By default, routers have a priority value of 64.
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