ecen602_hw5

ecen602_hw5 - Fall 2010 - ECEN 602 ! ! ! ! ! ! HW5: Due...

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1. Describe what next-hop the following sequence of packets take while traversing a router with a route table described below. Packet Dst IP Nexthop 1 10.201.203.30 2 10.201.203.111 3 10.201.203.141 4 10.201.202.250 5 10.201.204.10 Route Table Network Netmask Nexthop 10.201.203.0 255.255.254.0 eth0 10.201.203.0 255.255.255.0 eth1 10.201.203.0 255.255.255.128 R2 10.201.203.0 255.255.255.192 R3 default R4 2. Suppose two hosts (A and B) statically assign the same IPv4 address at boot in the order of A and then B. These hosts are on the same ethernet LAN. If B boots after A has established any form of IP communication describe what happens to A ʼ s connections (draw a packet sequence that includes IP and ARP packets). Explain how gratuitous ARP on boot could help alleviate this problem. 3. Use the netstat to discover the entries in the route table of eesun1.tamu.edu. Label the contents of the table as either: directly connected route, static route, dynamic route, or loop back. Explain the purpose of each entry. How many active TCP sockets are currently running on the machine? How many of them have peers that are not
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This document was uploaded on 03/03/2011.

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ecen602_hw5 - Fall 2010 - ECEN 602 ! ! ! ! ! ! HW5: Due...

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