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660 Chapter 9: Scenarios for Final Preparation
Solutions to Scenario 9-2, Part A--Planning
1
The first task was to derive the subnet numbers and broadcast addresses, so the assignable
addresses in each subnet become obvious. One important item to note is that the three
Frame Relay interfaces are in the same subnet, which is a clue that subinterfaces will not
be used and that the Frame Relay interfaces will be treated as a single network. Table 9-7
provides the answers to this question.
Table 9-5
Scenario 9-2, Part A--IP Subnet Planning Chart; Mask 255.255.255.192
Router
Interface
IP Address
Subnet
Number
Subnet
Broadcast
Address
Range of Valid
Addresses
R1 E0
168.11.11.101
R2 E0
168.11.12.102
R3 E0
168.11.13.103
R1 S0
168.11.123.201
R2 S0
168.11.123.202
R3 S0
168.11.123.203
Table 9-6
Scenario 9-2, Part A--IPX Network Number Planning Chart
Location of Network
IPX Network
Attached to R1 E0
Attached to R2 E0
Attached to R3 E0
Frame Relay
Server 1 Internal
Server 2 Internal
Server 3 Internal
Table 9-7
Scenario 9-2, Part A--IP Subnet and IPX Network Planning Chart Completed
Router
Interface
IP Address
Subnet
Number
Subnet
Broadcast
Address
Range of Valid
Addresses
R1 E0
168.11.11.101
168.11.11.64
168.11.11.127
65 to 126 in last octet
R2 E0
168.11.12.102
168.11.12.64
168.11.12.127
65 to 126 in last octet
R3 E0
168.11.13.103
168.11.13.64
168.11.13.127
65 to 126 in last octet
ch09.fm Page 660 Monday, March 20, 2000 5:23 PM