A.Signaling

B.Information distribution

C.Path calculation

D.Packet forwarding

A.The TTL value must be 255 In normal VRRP packet.

B.The TTL value of device from different manufactures is different; on VRP, the TTL value is 1.

C.By default, the VRRP packet with TTL value not equal to 255 will be dropped; On VRP, we can use some commands to disable the function of delecting TTL value.

D.The VRRP packet is only forwarded in one IP network, so the TTL value is always set to 1.

A.224.0.1.0~238.255.255.255

B.239.0.0.0~239.0.0.255

C.239.0.0.0~239.255.255.255

D.224.0.0.0~224.0.0.255

A.4s

B.6s

C.2s

D.9s

A.It represents all the hosts and routers.

B.It is a private IP address.

C.It represents all the routers.

D.It is a multicast IP address.