vNET-R3#sh run
Building configuration...

Current configuration : 1762 bytes
!
! Last configuration change at 16:56:58 UTC Thu Nov 16 2017
upgrade fpd auto
version 15.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname vNET-R3
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boot-start-marker
boot-end-marker
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aqm-register-fnf
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vrf definition cust-A
 vnet tag 100
 rd 3:1
 !
 address-family ipv4
 exit-address-family
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vrf definition cust-B
 vnet tag 200
 rd 3:2
 !
 address-family ipv4
 exit-address-family
!
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no aaa new-model
no ip icmp rate-limit unreachable
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no ip domain lookup
ip cef
no ipv6 cef
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multilink bundle-name authenticated
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redundancy
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ip tcp synwait-time 5
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interface FastEthernet0/0
 no ip address
 duplex half
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interface FastEthernet0/0.23
 description to_CE1-B
 encapsulation dot1Q 23
 vrf forwarding cust-B
 ip address 192.168.23.1 255.255.255.0
!
interface FastEthernet1/0
 vnet trunk
 ip address 192.168.100.3 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet1/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
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router eigrp VNET
 !
 address-family ipv4 unicast vrf cust-B autonomous-system 1
  !
  topology base
  exit-af-topology
  network 0.0.0.0
 exit-address-family
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ip forward-protocol nd
no ip http server
no ip http secure-server
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no cdp log mismatch duplex
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control-plane
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mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
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mgcp profile default
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gatekeeper
 shutdown
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line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
 stopbits 1
line vty 0 4
 login
 transport input all
!
!
end

vNET-R3#