question archive Problem 1- IP Fragmentation Consider sending 8000-byte datagram into a link that has an MTU of 500 bytes
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Problem 1- IP Fragmentation
Consider sending 8000-byte datagram into a link that has an MTU of 500 bytes.
a) How many fragments are generated?
b) What are their characteristics (i.e. what are the flags and offset values for each (Assume that the DF flag was not set : )
Solution: Assume that no optional fields of the IP header are in use (i.e. IP header is 20 bytes)
c) When a large datagram is fragmented into multiple smaller datagrams, where are these smaller datagrams reassembled?
d) Explain how traceroute works. Include a traceroute to a host at least 8 hops away.
Problem2: CIDR -A router has the following (CIDR) entries in its routing table:
Destination Gateway Next hop
160.46.56.0/21 Interface 1
160.46.48.0/20 Interface 0
166.53.40.0/22 Router 1
default Router 2
1. For each of the following IP address, what does the router do if packets with the following addresses arrive?
(a) 160.46.63.10/21
(b) 160.46.67.14/21
(c) 135.46.52.2 /22