Which two statements about the OSPF Router ID are true? (Choose two.)
A.
It identifies the source of a Type 1 LSA.
B.
It should be the same on all routers in an OSPF routing instance.
C.
By default, the lowest IP address on the router becomes the OSPF Router ID.
D.
The router automatically chooses the IP address of a loopback as the OSPF Router ID.
E.
It is created using the MAC Address of the loopback interface.
+ The highest IP address assigned to a loopback (logical) interface.
+ If a loopback interface is not defined, the highest IP address of all active router’s physical interfaces will be chosen.
+ The router ID can be manually assigned
agreed