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cisco router question

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tming

Technical User
Dec 19, 2001
40
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HK
I have a router with the following setting:

interface Virtual-Template1
ip unnumbered FastEthernet0
peer default ip address pool gewpptp
no keepalive
ppp encrypt mppe auto
ppp authentication pap chap ms-chap

interface Vlan1
description $ETH-SW-LAUNCH$
ip address 172.16.0.254 255.255.0.0 secondary
ip address 200.1.1.249 255.255.255.0
ip nat inside

What is the different function of these interface?
The different between interface Vlan1 and physical interface?
 
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