NAT (Network Address Translation for IPv4) CCNA Chapter 5

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Chapter 5 Network Address Translation for IPv4, NAT

04_Connecting Networks
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Astrit, for clarity it appears Router1 is acting as the ISP (public network) "Internet"... Can you explain what ip route 172.30.100.0 255.255.255.0 s0/0/0 does?  Is it creating a static route?  Shouldn't it be ip routed to 172.16.12.0/24 ??  Also, why did you choose a private address of 172.30.100.0/24 to represent your "Public Ip Address"?   I find your videos very informative, but need some backing on these questions

SekouTV
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Also, when you defined the pool MYPOOL 172.30.100.129 172.30.100.134 netmask 255.255.255.248   (how did you know to use "248"?)  Can you refresh me on how you completed the subnet?  Thanks!

SekouTV
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mr Astrit i got a problem with "ip route" command:
"
Router(config-if)#ip route 172.30.100.0 255.255.255.0 s0/0/0
%Default route without gateway, if not a point-to-point interface, may impact performance"

how can i for solving dis problem?

hamid