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Make sure these commands are on all routers:
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Router(config)#ip http server <--will not work on Remote
Router(config)#ip classless <--will work on Remote

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Other necessary commands:
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Remote(config-router)#passive-interface BRI0

Sales(config-router)#redistribute static
Sales(config-router)#passive-interface BRI0

ISP(config)#interface e0
ISP(config-if)#ip address 172.16.0.1
ISP(config-router)#network 172.16.0.0