R1#show run
Building configuration...

Current configuration : 998 bytes
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version 15.1
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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no ip cef
no ipv6 cef
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username R2 password 0 cisco
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license udi pid CISCO1941/K9 sn FTX1524IR2A
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spanning-tree mode pvst
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interface GigabitEthernet0/0
 description "connects R1 to PC-A"
 ip address 192.168.11.1 255.255.255.0
 duplex auto
 speed auto
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interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
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interface Serial0/0/0
 description "connects R1 to R2"
 ip address 172.27.12.1 255.255.255.252
 encapsulation ppp
 ppp authentication chap
 clock rate 128000
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interface Serial0/0/1
 no ip address
 clock rate 2000000
 shutdown
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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 Serial0/0/0
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ip flow-export version 9
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banner motd ^CUnauthorized Access is Prohibited!^C
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line con 0
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line aux 0
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line vty 0 4
 login
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end