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New Member

ipv6 routing on 300 Series Switches

Do the Small Business 300 Series Managed Switches support inter-vlan ipv6 routing? I'm trying to see if these switches support native ipv6 routing an not just isatap.

According to the admin guides, you can't add more than one ipv6 address to the switch. Is it possible to have more than one vlan interface with an ipv6 address and do ipv6 routing?




Re: ipv6 routing on 300 Series Switches

I have not tried this and do not have a test unit ... but ...

In L2 mode (aka Edge mode) - you can only have one address. 

In L3 mode, it appears that you can have more than one.  On page 183 there a bit more detail around IPv6 global and vlan interfaces:

If you have some time, can you update us with what you find?  Kindest regards,

Andrew Lissitz

New Member

Re: ipv6 routing on 300 Series Switches

I was hoping to get some anwsers before I go buy a switch.

When you write page 183, I assume you're referring to page 173:

What's confusing is that for ipv4, the document has seperate sections for configuring ipv4 in layer 2 and layer 3 modes. Also, the doc clearly states this routing between vlan is supported in layer 3 mode:

Operating in Layer 3 mode, the switch routes traffic between the directly attached
IP subnets configured at the switch. The switch continues to bridge traffic
between devices in the same VLAN. Additional IPv4 routes for routing to non-
directly attached subnets can be configured in the IP Static Routing Page.

But for ipv6, there's only one section for layer and layer 3, and then there's this:

• IPv6 Address—The switch supports one IPv6 interface. In additional to the
default link local and multicast addresses, the device also automatically
adds global addresses to the interface based on the router advertisements
it receives. The device supports a maximum of 128 addresses at the
interface. Each address must be a valid IPv6 address that is specified in
hexadecimal format by using 16-bit values separated by colons.

Also,t here's no explicting mention of routing between the vlans for ipv6.


Re: ipv6 routing on 300 Series Switches

I pulled out one of our 300 series switches and looked at the layer three settings to see if I could find something out for you.  Based on the inerface, you can only enable one ipv6 interface on the device.  So with that being said, ipv6 routing is not support on the device yet.  Hopefully this helps you out.