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Example: udp forwarder server

r1:

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hostname r1
buggy
!
logging file debug ../binTmp/zzz83r1-log.run
!
vrf definition tester
 exit
!
vrf definition v1
 rd 1:1
 exit
!
interface ethernet1
 no description
 vrf forwarding v1
 ipv4 address 1.1.1.1 255.255.255.0
 ipv6 address 1234::1 ffff::
 no shutdown
 no log-link-change
 exit
!
interface tunnel1
 no description
 tunnel key 4321
 tunnel vrf v1
 tunnel source ethernet1
 tunnel destination 1.1.1.2
 tunnel mode pckoudp
 vrf forwarding v1
 ipv4 address 3.3.3.1 255.255.255.0
 ipv6 address 3333::1 ffff::
 no shutdown
 no log-link-change
 exit
!
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server telnet tester
 security protocol telnet
 no exec authorization
 no login authentication
 vrf tester
 exit
!
!
end

r2:

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hostname r2
buggy
!
logging file debug ../binTmp/zzz83r2-log.run
!
vrf definition tester
 exit
!
vrf definition v1
 rd 1:1
 exit
!
vrf definition v2
 rd 1:1
 exit
!
interface ethernet1
 no description
 vrf forwarding v1
 ipv4 address 1.1.1.2 255.255.255.0
 ipv6 address 1234::2 ffff::
 no shutdown
 no log-link-change
 exit
!
interface ethernet2
 no description
 vrf forwarding v2
 ipv4 address 2.2.2.2 255.255.255.0
 ipv6 address 4321::2 ffff::
 no shutdown
 no log-link-change
 exit
!
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server telnet tester
 security protocol telnet
 no exec authorization
 no login authentication
 vrf tester
 exit
!
server udpfwd fwd
 port 1234
 target vrf v1
 target address 1.1.1.1
 target port 4321
 vrf v2
 exit
!
!
end

r3:

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hostname r3
buggy
!
logging file debug ../binTmp/zzz83r3-log.run
!
vrf definition tester
 exit
!
vrf definition v1
 rd 1:1
 exit
!
interface ethernet1
 no description
 vrf forwarding v1
 ipv4 address 2.2.2.3 255.255.255.0
 ipv6 address 4321::3 ffff::
 no shutdown
 no log-link-change
 exit
!
interface tunnel1
 no description
 tunnel key 1234
 tunnel vrf v1
 tunnel source ethernet1
 tunnel destination 2.2.2.2
 tunnel mode pckoudp
 vrf forwarding v1
 ipv4 address 3.3.3.2 255.255.255.0
 ipv6 address 3333::2 ffff::
 no shutdown
 no log-link-change
 exit
!
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server telnet tester
 security protocol telnet
 no exec authorization
 no login authentication
 vrf tester
 exit
!
!
end