Routing – Dual Stack Network Configuration

ipv6packet-tracerrouting

I am trying to implement Dual Stack configuration of a network in Packet Tracer. I have two routers connected to each other both of these routers have one IPv4 client and one IPv6 client. The routers are configured to use both IPv4 and IPv6 protocols. I am able to send packet from one IPv4 client to another IPv4 client via both the routers. Similarly its also working for IPv6 clients.

I am unable to send packet from an IPv4 client to an IPv6 client via both the routers and vice versa.

Is this kind of communication between IPv4 and IPv6 is possible using only Dual Stack? If yes kindly help me with the problem.

Thanks in Advance.:)

Below given is the link to the network we designed.

network diagram

Best Answer

Dual stack means that an interface can communicate with both v4 and v6 clients. It DOES NOT mean that it will translate between the two. For that, you need to implement NAT-PT, to translate between the different layer 3 protocols. BTW, I've never seen NAT-PT work at any scale.

Related Solutions

Routing – Best practice for dual-homing site with two ISPs

What kind of equipment do you have connecting to the providers? If it is a Cisco device you could use IP SLA to ping a destination like 8.8.8.8 over the primary ISP. As soon as you don't get a reply failover to the other static route. Example config:

! ISP1
ip route 0.0.0.0 0.0.0.0 x.x.x.x track 1
! ISP2
ip route 0.0.0.0 0.0.0.0 y.y.y.y 250
ip sla 1
icmp-echo 8.8.8.8 source-interface <ISP1_interface>
frequency 3
timeout 1000
ip sla schedule 1 life forever start-time now

You may have to put a static route for 8.8.8.8 over ISP1 to make it always exit out that path. Obviously if you really use 8.8.8.8 choose another IP because otherwise you won't have reachability to it if ISP1 goes down.

!x.x.x.x is next-hop to ISP1
ip route 8.8.8.8 255.255.255.255 x.x.x.x

Routing – IPv4 & IPv6 IPSec differences

IPv4 and IPv6 "coexist" the same as Appletalk and IPX. That is "completely oblivious to each other". While they both start with eye-pee, and share a packet format (at the most basic level), beyond the version number in the IP header, they are completely alien to each other. Study how IPv4 works, then study how IPv6 works. They are far more different than their names suggest.

(I've worked with this stuff for decades, but I cannot point you to any single book (or webpage) that can give you everything you need to know. We're not assembling Ikea furniture here.)

Best Answer

Related Solutions

Routing – Best practice for dual-homing site with two ISPs

Routing – IPv4 & IPv6 IPSec differences

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