4. An 8-node IP network routes packets based upon OSPF. At t=0, node F has the following information residing within its routing cache. Node A BUDEE C B(5) A(5) B(6) A(3) F G H D(3) C(6) F(2) E(2) D(2) E(4) E(3) G(6) B(5) C(2) D(4) F(7) Determine the routing table associated with node F. E(5) G(4) F(4) H(7) H(6) G(3)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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4. An 8-node IP network routes packets based upon OSPF. At t=0, node F has the following information residing
within its routing cache.
Node
A
BUD
C
E
F
G
H
B(5)
A(5)
B(6)
A(3)
B(5)
C(2)
D(4)
F(7)
D(3)
C(6)
F(2)
E(2)
D(2)
E(4)
E(3)
G(6)
E(5)
G(4)
F(4)
H(7)
H(6)
G(3)
Determine the routing table associated with node F.
Node F then intends to broadcast its own connectivity table to all other known and (as yet) unknown nodes on
the network. To do this, packets are broadcast with a hop count set to the known-network diameter plus 1.
What is the minimum number of packets that can be carried by the network in successfully passing Node F's
status to all other nodes? What is the maximum number?
If reverse path forwarding is used to broadcast these upgrade packets, how many packets does the network
now carry? Comment upon the answer obtained.
Repeat all previous parts of the question for node E and comment upon the answers obtained.
Transcribed Image Text:4. An 8-node IP network routes packets based upon OSPF. At t=0, node F has the following information residing within its routing cache. Node A BUD C E F G H B(5) A(5) B(6) A(3) B(5) C(2) D(4) F(7) D(3) C(6) F(2) E(2) D(2) E(4) E(3) G(6) E(5) G(4) F(4) H(7) H(6) G(3) Determine the routing table associated with node F. Node F then intends to broadcast its own connectivity table to all other known and (as yet) unknown nodes on the network. To do this, packets are broadcast with a hop count set to the known-network diameter plus 1. What is the minimum number of packets that can be carried by the network in successfully passing Node F's status to all other nodes? What is the maximum number? If reverse path forwarding is used to broadcast these upgrade packets, how many packets does the network now carry? Comment upon the answer obtained. Repeat all previous parts of the question for node E and comment upon the answers obtained.
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