Switching Lab PC1 in VLAN 21 Config

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version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
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hostname PC1_V21
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boot-start-marker
boot-end-marker
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no aaa new-model
memory-size iomem 5
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ip cef
no ip domain lookup
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multilink bundle-name authenticated
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archive
 log config
  hidekeys
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interface FastEthernet0/0
 ip address 10.0.21.11 255.255.255.0
 speed 100
 full-duplex
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interface FastEthernet0/1
 no ip address
 shutdown
 speed 100
 full-duplex
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no ip http server
no ip http secure-server
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 10.0.21.1
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control-plane
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line con 0
 exec-timeout 0 0
line aux 0
line vty 0 4
 password cisco
 login
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end