IPv6 Lab in GNS3

IPv6 test lab on GNS to Demontrate following

1. Dual Stack
2. MP BGP to enabel IPv6 routing
3. HSRPv2
4. IPv6 Autoconfiguration

IOS used: c3745-advipservicesk9-mz.124-15.T7

Setup description:

IP address / subnet details

• IPv4

o 192.168.1.0 /24 R1-R2-R3 LAN

o 192.168.3.0/24 between R1 & R4

o 192.168.5.0/24 between R2 & R4

o 192.168.4.0/24 R4 loopback

o R1 & R2 running hsrp group 2 with virtual ip 192.168.1.1



• IPv6

o 2001::/64 R1-R2-R3 LAN

o 2003::/64 between R1 & R4

o 2005::/64 between R2 & R4

o 2004::/64 R4 loopback

o R1 & R2 running hsrp v2 group 1 with auto-configured virtual ip





• BGP detail

o R1 & R2 running ibgp within AS 10

o R4 is AS 40 is running eBGP with R1 & R2 in AS 10 respectively

o R3 is used like end host with default route.



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R3 Configuration

Hostname R1

!

ipv6 unicast-routing

!

interface FastEthernet0/0

ip address 192.168.1.3 255.255.255.0

duplex auto

speed auto

ipv6 address autoconfig default

end

!

ip route 0.0.0.0 0.0.0.0 192.168.1.1

!

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R1 configuration

Hostname R2

!

ipv6 unicast-routing



!

interface FastEthernet0/0

ip address 192.168.1.2 255.255.255.0

duplex auto

speed auto

ipv6 address 2001::1/64

standby version 2

standby 1 ipv6 autoconfig

standby 1 priority 110

standby 1 preempt

standby 1 track FastEthernet0/1 20

standby 2 ip 192.168.1.1

standby 2 priority 110

standby 2 preempt

standby 2 track FastEthernet0/1 20

end

!



interface FastEthernet0/1

ip address 192.168.3.2 255.255.255.0

duplex auto

speed auto

ipv6 address 2003::2/64

end



!

router bgp 10

no synchronization

bgp router-id 1.1.1.1

bgp log-neighbor-changes

network 192.168.1.0

neighbor 2001::2 remote-as 10

neighbor 2003::1 remote-as 40

neighbor 192.168.1.3 remote-as 10

neighbor 192.168.3.1 remote-as 40

no auto-summary



!

address-family ipv6

neighbor 2001::2 activate

neighbor 2003::1 activate

network 2001::/64

exit-address-family

!

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R2 Configuration



Hostname R2

!

ipv6 unicast-routing

!

interface FastEthernet0/0

ip address 192.168.1.3 255.255.255.0

duplex auto

speed auto

ipv6 address 2001::2/64

standby version 2

standby 1 ipv6 autoconfig

standby 1 preempt

standby 2 ip 192.168.1.1

standby 2 preempt

!

interface FastEthernet0/1

ip address 192.168.5.2 255.255.255.0

duplex auto

speed auto

ipv6 address 2005::2/64

!

router bgp 10

no synchronization

bgp router-id 2.2.2.2

bgp log-neighbor-changes

network 192.168.1.0

neighbor 2001::1 remote-as 10

neighbor 2005::1 remote-as 40

neighbor 192.168.1.2 remote-as 10

neighbor 192.168.5.1 remote-as 40

no auto-summary

!

address-family ipv6

neighbor 2001::1 activate

neighbor 2005::1 activate

exit-address-family

!

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R4 configuration

!

Hostname R4

!

ipv6 unicast-routing

!

interface Loopback0

ip address 192.168.4.1 255.255.255.0

ipv6 address 2004::1/64

!

interface FastEthernet0/0

ip address 192.168.3.1 255.255.255.0

duplex auto

speed auto

ipv6 address 2003::1/64

!

interface FastEthernet0/1

ip address 192.168.5.1 255.255.255.0

duplex auto

speed auto

ipv6 address 2005::1/64

!

router bgp 40

no synchronization

bgp router-id 4.4.4.4

bgp log-neighbor-changes

network 192.168.3.0

network 192.168.4.0

network 192.168.5.0

neighbor 2003::2 remote-as 10

neighbor 2005::2 remote-as 10

neighbor 192.168.3.2 remote-as 10

neighbor 192.168.5.2 remote-as 10

neighbor 192.168.5.2 route-map PREPEND out

no auto-summary

!

address-family ipv6

neighbor 2003::2 activate

neighbor 2005::2 activate

neighbor 2005::2 route-map PREPEND out

network 2003::/64

network 2004::/64

network 2005::/64

exit-address-family

!

route-map PREPEND permit 10

set as-path prepend 40 40 40

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Show commands:



R1 output

R2 output

R4 output

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Commands:

1 To clear ipv6 bgp neighbor

clear bgp ipv6 unicast x:x:x:x::x