ISC and Cisco IPv6 relay

Michael Sinatra michael at
Fri Aug 14 17:55:11 UTC 2009

On 08/14/09 10:24, David W. Hankins wrote:
> On Fri, Aug 14, 2009 at 02:22:20PM +1200, Eustace, Glen wrote:
>> If anyone has got ISC dhcpd -6 working using Cisco routers as ipv6 dhcp relays, I'd love to hear from you off list as I am having no success at all.
> we've had successful tests in the past...
> but i admit i was not the one configuring the cisco, so i'm no help at
> all. :(

I have configured it on both a 7301 acting pretty much strictly as a
DHCP relay and on a 6500/sup720 with IOS 12.2(33)SXI1, which now
provides DHCP relay capability on that platform.  It's a pretty simple
setup, though--just dynamic addressing from a range for the clients.

A graphical view of the setup I used is at:

(see slide #15)

Now that the 6500 IOS supports relaying built-in, I don't need the
extraneous 7301 and it has been repurposed. :)


PS. Glen, feel free to contact me off-list w/more questions.

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