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version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
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hostname R1
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spanning-tree mode pvst
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interface Loopback1
 ip address 192.168.10.1 255.255.255.0
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interface Loopback2
 ip address 192.168.11.1 255.255.255.0
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interface Loopback3
 ip address 192.168.12.1 255.255.255.0
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interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
 shutdown
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interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
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interface Serial0/0/0
 no ip address
 clock rate 2000000
 shutdown
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interface Serial0/0/1
 ip address 10.1.1.254 255.255.255.0
 clock rate 125000
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interface Vlan1
 no ip address
 shutdown
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ip classless
ip route 0.0.0.0 0.0.0.0 10.1.1.1 
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no cdp run
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line con 0
line vty 0 4
 login
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end