We've been running IPv6 on our Cisco wireless infrastructure for a
couple of years and haven't experienced this issue. We have eight
wireless client VLANs in each of our 6500's assigned to the various
downstream AP's through AP groups. And we are running one large
mobility domain across our entire Tampa campus. But, we're currently
running 7.5, so I don't know if perhaps there's an issue with 7.4.110.
Joe Rogers
University of South Florida
On 11/22/2013 04:08 PM, Hector J Rios wrote:
For those of you that have been brave enough to run IPv6 on your Cisco
wireless infrastructure, I wanted to ask a question.
We are running into a peculiar situation. We have three WiSM2s
(7.4.110), in three different locations, all running on individual
Cisco 6500 Catalysts. All the SVIs in the L3 switches are configured
with IPv4 and IPv6 addresses. The WiSM2s are all part of the same
mobility group. When a client joins the wireless network, it gets a v4
address and then three v6 addresses. The v6 addresses correspond to
the three different interfaces on each WiSM2. We suspected this had
something to do with mobility. So we deleted the mobility members from
all WiSM2s and clients got a single v6 address. But we have to have
mobility. So, then we tried suppressing router advertisements on the
SVIs, and that sort of worked. Clients now get a single v6 address
from their parent controller, but interestingly enough, they
eventually lose their v6 default gateway. The reason? We have no clue.
Anyway, have you guys run into this really fun issue?
Thanks and have a great weekend!
Hector Rios, CCNP, CCA
Assistant Director, Network Engineering
Dept. of Networking and Infrastructure
Information Technology Services
Louisiana State University
Phone: (225) 578-1333
Email: [email protected] <mailto:[email protected]>
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