Consider the mixed IPV4/IPV6 network shown below, where an IPV4 tunnel exists between IPV6 routers B and E. Suppose that IPV6 router A sends a datagram to IPV6 router F. IPV6 datagrams are shown in blue; the IPV4 datagram is in red (containing the encapsulated IPV6 datagram in blue). A B E IPV6 IPV6/v4 IPV4 IPV4 IPV6/v4 IPV6 (a) (b) (c) Perform the matching below to indicate the datagram field value and type at the indicated point. At point (a), the IP version field in the [Choose ] datagram is: At point (a), the destination IP address [ Choose ] is that of host: At point (a), the number of bits in the [ Choose ] destination IP address is: At point (b), the larger (red, encapsulating) datagram an IP version field in the datagram of: [ Choose ) At point (b), the larger (red, encapsulating) datagram has a source [ Choose ] IP address of host: At point (c), the source IP address is [ Choose ] that of host: At point (c), the number of bits in the [ Choose ) destination IP address is: > > > > >

CIS269 Packet Translation Lab Break down the following IP datagram into its individual fields, listing the value of each. Hint: It’s an IP datagram containing a TCP segment containing another protocol... 45 00 00 31 94 00 40 00 80 06 1B 9F 80 A3 C9 29 D8 45 29 15 04 09 00 15 00 00 C3 A1 DF 65 A8 45 50 18 20 AA 8E 8C 00 00 43 57 44 20 66 75 6E 0D 0A

The TTL behaviour for IP-to-Label or Label-to-IP connections is depicted in the below image. Ingress LSR receives a packet with a TTL value of 289 arriving. What would the TTL value be for the ingress and egress LSRs? the letters (A, B, C, D, E, F, G, and H). TTL = 289 MPLS Label IPv4 Packet Ingress LSR TTL = A: TTL = B: LSR TTL= C: TTL=D: X LSR TTL=E: TTL=F: Label Switched wh TTL= G: LSR TTL=H: Egress LSR

A router interconnects a subnet, where all the interfaces of the subnets must have the prefix 164.132.62/24. suppose that the Subnet is required to support up to 60 interfaces, provide a network address that satisfies the above.

An inbound IPv4 packet is received by a router with the routeing table shown in Figure 8-8. 10.55.72.234 is the originating IP address. 10.4.6.7 is the destination host. The TTL is set to one. The Protocol field has the value 6. What is the router's intended use for this packet?

In the following figure, assume computer A is sending a message to computer B. For the message from computer A to router R, what is the source and destination IP and the source and destination MAC? Source IP: Destination IP: Source IP: Destination MAC:

There are two hosts a and B, which are connected through router R1. The IP addresses and MAC addresses of a, B and R1 are shown in the figure. Write out the ARP request packet sent by a to B and the MAC address and IP address of the received ARP response packet. (including source address and destination address). 220.168.11.16 A 00-15-C5-C6-CB-11 220.168.11.1 R1 220.168.10.1 02-21-13-16-42-910-15-C5-C6-08-11 220.168.10.12 MACE 00-15-CS-CB-C4-95

Consider the network depicted in the below figure. Suppose that router R1 receives a packet Pktl from host PC1. The length of packet Pktl is L = 25 Mbit. Router R1 takes 0.4 msec to determine the output link of packet Pktl. Packet Pktl is to be forwarded. through the output link to router R2. Packet Pktl waits 136 ms at the output link for transmission. The transmission link of the link between router R1 and router R2 is R = 5 Mbps. The distance between router R1 and router R2 is 400 Km and the propagation speed over the link is 2*108 m/s. PC1 a. b router R2. R1 R2 R3 Find the queuing delay of packet Pktl at router R1. Find the propagation delay of packet Pktl over the link from router R1 to

An Internet user would like to transfer a message from his computer (host A) to another computer (host B). The size of the message passed to the IP layer is 3800 bytes. The datagram(s) carrying the message will have to cross two routers (R1 and R2) and 3 networks (NET1, NET2, and NET3) as described in the above figure. Each of these networks has a specific MTU (for example the MTU of network 1 is 1500 bytes. MTU here stands for Maximum Transmission Unit, the largest data that a frame can carry). Fill the table with the IP datagram(s) needed right after passing through NET3 (no need to show your fragmentation for N1 or N2). Assume a 2-byte options in the header. Show all your details (for partial points in case your numbers are incorrect). NET1 MTU=1500 R1 NET2 MTU=640 R2 NET3 MTU 1500 V BIU Fragment # Format Offset Flag (3 bits) Data Length Total Length ...

Assume the maximum transmission unit (or MTU) of an IP packet on 100 Mbps Ethernet is set at 1500 bytes. Also, assume we are sending our file using IPv6 at the Network layer and UDP at the Transport layer. A typical IPv6 header consists of 40 bytes, a UDP header consists of 8 bytes. Answer the following three questions based on the information provided above. For all answers, enter a decimal integer value without formatting (no commas). 1. How many packets do we have to send in order to transfer a file of 24KB over 100 Mbps Ethernet? packets 2. How many bytes do we have to send at the network layer in order to transfer the above file entirely? bytes 3. How many bytes do we have to send at the data link layer in order to transfer the above file entirely? Assume that the Ethernet header is 14 bytes and the frame checksum is 4 bytes. bytes