|Exam 200-120||Question id=78||IP Routing Technologies|
Which statements about the OSPF Router ID are true?
It identifies the source of a Type 1 LSA.|
It should be the same on all routers in an OSPF routing instance.|
By default, the lowest IP address on the router becomes the OSPF Router ID.|
The router automatically chooses the IP address of a loopback as the OSPF Router ID.|
It is created using the MAC Address of the loopback interface.|
This router-id can be statically assigned, or it can be dynamically assigned based on an interface IP addresses.
To statically assign the router-id:
Automatically assign the router-id:
- The highest IP Address of a manually created loopback interface.
- If there is no configured Loopback interface then the router-id will be the highest IP Address of the active physical interface.