A.The ping sends Y ICMP requests

B.The ping packet belongs to VPN instance M

C.The source IFP address of the ping packet is X

D.The ICMP request of the ping, the packet size is Z (excluding IP and ICMP header)

A.The device type of R1 is Level-1-2

B.The device type of R1 is Level-2

C.The device type of R1 is Leve1-1

D.The device type of R1 cannot be determined

A.When the length of the next hop address is 16, the Network Address of Next Hop carries the link local address

B.The length of the next hop address can be 16 or 3

C.The NLRI field carries IPv6 routing prefix and mask information

D.The AFI (address family) value is 2, which represents IPv6

A.Outgoing interface

B.IP address

C.VLANID

D.MAC address

A.Switch MAC address learning error

B.Wrong port and MAC address binding is configured on the switch

C.The interface is manually shut down or the physical interface is damaged

D.Port isolation is configured on the switch