The current corporate networks often use OSPF as the routing protocol, then use OSPF doing routing protocol, which of the following issues should be paid attention to? (Multiple choice)
A . Confirm that the backbone area will not split
B . Confirm whether there will be sub-optimal routes in the network under the OSPF routing rules
C . Confirm that all non-backbone areas and backbone areas have correct and reliable links
D . Confirm the topology of the OSPF network to ensure that OSPF does not have loops during route calculation
E . Confirm that OSPF ‘s COST can correctly reflect the real bandwidth of links above 100M
Answer: ABCE