Question on Lab Practice Scenario for Configuring NAT

[gauthierda]

I'm a newbie and I have a question regarding the practice scenario lab included with the CCNA Certification Kit. The exercise includes defining a NAT pool GADGET-NAT-POOL using subnet 40.0.0.16/28. When defining such a pool, are the network and broadcast addresses legitimate pool addresses, or should the pool start with 40.0.0.17 and end with 40.0.0.30?

The suggested correct answer in the lab includes not only the network and broadcast address, but the network address for the 40.0.0.32 subnet as well. Doesn't seem right to me.
Solution

To receive full credit for your answer, you should configure each device as follows:
2811 Router Configuration
NAT-Router-1>enable
NAT-Router-1#conf t
NAT-Router-1(config)#ip nat pool GADGET-NAT-POOL 40.0.0.16 40.0.0.32 netmask 255.255.255.240
NAT-Router-1(config)#ip nat inside source list 1 pool GADGET-NAT-POOL overload
NAT-Router-1(config)#access-list 1 permit 20.1.1.0 0.0.0.255
NAT-Router-1(config)#ip route 0.0.0.0 0.0.0.0 75.0.0.1
NAT-Router-1(config)#interface FastEthernet 0/0
NAT-Router-1(config-if)#ip nat outside
NAT-Router-1(config-if)#interface Serial 0/0/0
NAT-Router-1(config-if)#ip nat inside
NAT-Router-1(config-if)#exit
NAT-Router-1(config)#exit
NAT-Router-1#copy running-config startup-config


2811 Router Configuration
GADET-1>enable
GADET-1#conf t
GADET-1(config)#ip route 0.0.0.0 0.0.0.0 20.1.1.5
GADET-1(config)#exit
GADET-1#copy running-config startup-config

2811 Router Configuration
ISP-UUCOM>enable
ISP-UUCOM#conf t
ISP-UUCOM(config)#ip route 40.0.0.16 255.255.255.240 75.0.0.2
ISP-UUCOM(config)#exit
ISP-UUCOM #copy running-config startup-config