2.Does a destination address in an IP datagram ever refer to an intermediate router? Explain.

3.If one captures an IP datagram passing across a network in the middle of the Internet, how many FRAME headers will appear before the datagram?

4.Assume that there is some misconfiguration on two routers in the network. Do datagrams loop around in the network forever? Explain yes or no.

5.Where in a Layer 2 FRAME IP datagram is encapsulated? What value will the frame type field have if it is carrying IPv4 packet?

6.If you capture an IP packet, does a MAC address appear anywhere in the IP packet header? Explain yes or no.

7.What is the purpose of IPv4 header checksum?

Additional problems for HW:

An IP datagram has arrived with the following information in the header (in hex). All answers must be in DECIMAL.

45 00 00 54 00 03 00 00 20 06 00 00 7B 4E 03 02 B4 0E 0F 55

Are there any options?

Is the packet fragmented?

What is the size of the payload?

Is a checksum used?

How many more routers can the packet travel to?

What is the identification number of the packet?

What is the type of service?

Calculate the Checksum for the following IPv4 Header.

Note: The values given for each field are in decimal number format. The checksum value must be in HEX.

4	5	0	28
1			0	0
4		17	0
12.101.14.5
10.6.10.240

next-hop forwarding help please.