A. Multiple instances can be run on a single link.

B. The OSPFv3 packet header contains the Instance ID field.

C. Each OSPFv3 process runs independently in a router.

D. Multiple instances can be run in the same OSPFv3 process on an interface.

A. The area ID configured on R1 is different from that configured on its neighbors.

B. No OSPF process ID is configured on R1.

C. The authentication function is not configured on R1, but configured on its neighbors.

D. The network address advertised by R1 does not match the interface mask.

A. 6to4

B. Dual Stack

C. NAT64

D. ISATAP

A. FRR for private IP routes between Pes and CEs

B. VPN GR

C. CE dual-homing networking at the access layer

D. VPN FRR

A. A neighbor relationship can be established; all network segments are reachable

B. Route flapping occurs

C. RTB and RTC cannot establish a neighbor relationship

D. RTA and RTB cannot establish a neighbor relationship