FreeRTR basic configurations

From the freertr website:

freeRouter is a free, open source router os process
it speaks routing protocols, and (re)encapsulates packets on interfaces (a huge list of encapsulation and routing test cases can be found under self-test page)since it handles packets itself, it is independent of underlaying os capabilities(optionally, it can export forwarding tables through openflow to external switch)since it is an unprivilegized process, it receives and sends packets through socketsthere are external, privileged processes that place traffic to these sockets(it means that internet can be used as backplane for router processes) the command line tries to mimic the industry standards with one exception: no global routing table: every routedinterface must be in a virtual routing table positive side effect: there are no vrf-awareness questions

As notes in my FreeRTR post, FreeRTR is a wonderful alternative to labbing up protocols and provides an incredible array of protocol support. Below are my three router test configurations from a basic setup. They should be enough to get you started.

RTR1



hostname rtr1
buggy
!
!
vrf definition host
exit
!
vrf definition vrf1
rd 1:1
exit
!
router isis4 1
vrf vrf1
net-id 48.1111.0000.1111.00
traffeng-id ::
is-type both
redistribute connected
exit
!
router isis6 1
vrf vrf1
net-id 48.1111.0000.1111.00
traffeng-id ::
is-type both
segrout 10
level2 segrout
level1 segrout
redistribute connected
exit
!
!
interface loopback0
no description
vrf forwarding vrf1
ipv4 address 10.99.99.1 255.255.255.255
ipv6 address 2001:db8:1111::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
router isis6 1 enable
router isis6 1 circuit both
router isis6 1 segrout index 1
router isis6 1 segrout node
no shutdown
no log-link-change
exit
!
interface loopback1
no description
no shutdown
no log-link-change
exit
!
interface ethernet1
no description
lldp enable
vrf forwarding vrf1
ipv4 address 10.1.1.1 255.255.255.252
ipv6 address 2001:db8:1111::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe
mpls enable
router isis6 1 enable
router isis6 1 circuit both
no shutdown
no log-link-change
exit
!
interface ethernet2
no to_rt2_ether2
lldp enable
vrf forwarding vrf1
ipv4 address 10.1.4.1 255.255.255.252
ipv6 address 2001:db8:1114::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe
mpls enable
router isis6 1 enable
router isis6 1 circuit both
no shutdown
no log-link-change
exit
!
interface ethernet20001
no description
vrf forwarding host
ipv4 address 10.255.255.254 255.255.255.0
no shutdown
no log-link-change
exit
!
line tty1
no login authentication
exit
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
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!
!
alias test bash command attach shell1 socat - exec:sh,ctty,pty,stderr
alias test bash description
alias test bash parameter optional
!
server telnet host
security protocol telnet
no login authentication
vrf host
exit
!
!
end

RTR2

hostname rtr2 
buggy
!
!
vrf definition host
exit
!
vrf definition vrf1
rd 1:1
exit
!
router isis4 1
no vrf
exit
!
router isis6 1
vrf vrf1
net-id 48.2222.0000.2222.00
traffeng-id ::
is-type both
segrout 10
level2 segrout
level1 segrout
redistribute connected
exit
!


interface loopback0
no description
vrf forwarding vrf1
ipv4 address 10.99.99.2 255.255.255.255
ipv6 address 2001:db8:2222::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
router isis6 1 enable
router isis6 1 circuit both
router isis6 1 segrout index 1
router isis6 1 segrout node
no shutdown
no log-link-change
exit
!
interface ethernet1
description to_rtr3_ether2
lldp enable
vrf forwarding vrf1
ipv4 address 10.1.3.2 255.255.255.252
ipv6 address 2001:db8:1112::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe
mpls enable
router isis6 1 enable
router isis6 1 circuit both
no shutdown
no log-link-change
exit
!
interface ethernet2
no to_rt1_ether2
lldp enable
vrf forwarding vrf1
ipv4 address 10.1.4.2 255.255.255.252
ipv6 address 2001:db8:1114::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe
mpls enable
router isis6 1 enable
router isis6 1 circuit both
no shutdown
no log-link-change
exit


!
interface ethernet20001
no description
vrf forwarding host
ipv4 address 10.255.255.254 255.255.255.0
no shutdown
no log-link-change
exit
!
line tty1
no login authentication
exit
!
!
!
!
!
!
!
!
!
!
!
!
!
!
alias test bash command attach shell1 socat - exec:sh,ctty,pty,stderr
alias test bash description
alias test bash parameter optional
!
server telnet host
security protocol telnet
no login authentication
vrf host
exit
!
!
end

RTR3

hostname rtr3 
buggy
!
!
vrf definition host
exit
!
vrf definition vrf1
rd 1:1
exit
!
router isis4 1
vrf vrf1
net-id 48.3333.0000.3333.00
traffeng-id ::
is-type both
redistribute connected
exit
!
router isis6 1
vrf vrf1
net-id 48.3333.0000.3333.00
traffeng-id ::
is-type both
segrout 10
level2 segrout
level1 segrout
redistribute connected
exit
!
interface loopback0
no description
vrf forwarding vrf1
ipv4 address 10.99.99.3 255.255.255.255
ipv6 address 2001:db8:3333::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
router isis6 1 enable
router isis6 1 circuit both
router isis6 1 segrout index 1
router isis6 1 segrout node
no shutdown
no log-link-change
exit
!
interface loopback1
no description
no shutdown
no log-link-change
exit
!
!
interface ethernet1
description to_rtr2_ether1
lldp enable
vrf forwarding vrf1
ipv4 address 10.1.3.1 255.255.255.252
ipv6 address 2001:db8:1112::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe
mpls enable
router isis6 1 enable
router isis6 1 circuit both
no shutdown
no log-link-change
exit
!
interface ethernet2
description to_rtr1_ether1
lldp enable
vrf forwarding vrf1
ipv4 address 10.1.1.2 255.255.255.252
ipv6 address 2001:db8:1111::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe
mpls enable
router isis6 1 enable
router isis6 1 circuit both
no shutdown
no log-link-change
exit
!
interface ethernet20001
no description
vrf forwarding host
ipv4 address 10.255.255.254 255.255.255.0
no shutdown
no log-link-change
exit
!
line tty1
no login authentication
exit
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
alias test bash command attach shell1 socat - exec:sh,ctty,pty,stderr
alias test bash description
alias test bash parameter optional
!
server telnet host
security protocol telnet
no login authentication
vrf host
exit
!
!
end

Helpful show commands for this basic setup

 sh ipv4 route vrf1
sh ipv6 route vrf1

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Copyright 2016 Nick Buraglio, ForwardingPlane, LLC

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