IPv6 and VLAN

[perpaal]

Hi

I have a network witch is segmented using VLANs.

The other day somebody told me that this would cause me a lot of truble when migrating to IPv6.

Does this make sense?

Anybody got links to some online IPv6 learing material? 

[Gerald Vogt]

No. It doesn't make sense. VLAN is a level 2 concept. IPv6 is level 3. The one thing has nothing to do with the other.

It can only cause trouble at points where both meet, i.e. at your router. The router needs to route traffic between VLANs. Now it does this based on IPv4. If you get IPv6 and it's dual-stacked you have to add IPv6 addresses to each VLAN interface on your router and enable IPv6 routing. But that's it.

Thus, it only really causes problems if your router doesn't support IPv6. But should be obvious. For the operation of your VLANs and the traffic inside each VLANs it doesn't matter which IP protocol you use. For the VLAN and on your switches it's all Ethernet and MAC addresses...

[scottchamings]

This is at the top of my ipv6 questions.

We have some windows 2008 servers which have ipv6 on by default and there is technet articles suggesting this must be left on for system stability reasons (apparently components use ipv6 to talk to each other).

With the above information would it be safe to assume until I add ipv6 to switches (they do some routing as well) or to the router than ipv6 should not interfere with existing ipv4 static routes.

Ipv6 addresses definitely still scare the hell out of me 8-)

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