IPv6 in the enterprise

[Justin Krejci]

I have close to zero experience using Windows 7 at all much less with
IPv6/HSRP+Win7

I would be interested to find out more about this issue, perhaps I will
run it in the lab and see if I can replicate this behavior. Was your
experience reproducible? did you try some basic things like bounce the
nic on the Win7 box? Did you have other non-Win7 machines on the same
network that continued to operate without issue when the Win7 starting
having problems?

On Mon, 2011-04-18 at 13:20 -0400, Matthew Huff wrote:

> When I used a GUA for my HSRP address, Windows 7 would get confused after a few days and lose its global address. Switching to a link-local address for HSRP appears to have resolved that, although we are still testing. We are running SXI5 on a 6509/sup720
> 
> 
> 
> ----
> Matthew Huff             | 1 Manhattanville Rd
> Director of Operations   | Purchase, NY 10577
> OTA Management LLC       | Phone: 914-460-4039
> aim: matthewbhuff        | Fax:   914-460-4139
> 
> 
> -----Original Message-----
> From: Justin Krejci [mailto:jkrejci at usinternet.com] 
> Sent: Monday, April 18, 2011 1:06 PM
> To: Mark Kamichoff
> Cc: Dale W. Carder; Matthew Huff; 'ipv6-ops at lists.cluenet.de'
> Subject: Re: IPv6 in the enterprise
> 
> 
> 
> On Mon, 2011-04-18 at 12:02 -0400, Mark Kamichoff wrote:
> > On Mon, Apr 18, 2011 at 10:39:56AM -0500, Dale W. Carder wrote:
> > > We are using HSRP with static addressing (for link-local as well).
> > > For the version of code that we are on, we couldn't use a global
> > > address as the HSRP address, but this has not proved to be an issue.
> > > In addition, it has had the nice side effect of being able to tell
> > > everyone that the router is always fe80::1, regardless of what network
> > > you are on.
> > 
> > We're doing the same exact thing with HSRP, and Cisco tells us that GUA
> > addresses will be supported in the future.
> 
> According the documentation for 6509s the SXI4 release supports GUA for
> HSRP. Previous to that you must use link-local for the virtual address.
> http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/product_bulletin_c25_603217_ps708_Products_Bulletin.html
> 
> A quick google search also yields 12.4T has support for HSRP GUA.
> http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-fhrp.html#wp1062511
> 
> 
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