enabling IPv6 on Cisco 6500 breaks IPv4 Internet connectivity

Jared Mauch jared at puck.nether.net
Mon Jun 11 02:27:47 CEST 2012

I also forwarded to the platform expert on this at Cisco. 

On Jun 10, 2012, at 9:42 AM, Nick Hilliard <nick at foobar.org> wrote:

> On 10/06/2012 00:31, Jim Trotz wrote:
>> In the lab we confirmed that a 6500 router with a full IPV4 configuration
>> (VRFs, MPLS, MBGP [full table]) hangs when  2 ipv6 commands are entered (no
>> other ipv6 commands - addresses, ect.) The problem happen when these
>> commands are applied or removed.
> Jim,
> you'd do much better to move this to cisco-nsp at puck.nether.net.  It's more
> of a specialised 6500 problem than a general ipv6 issue, and there are some
> people on that mailing list who are pretty clued in about the peculiarities
> of the sup720.
> Sounds like traffic is definitely being punted.  You can check this out by
> attaching an ERSPAN session to the RP:
> http://cisco.cluepon.net/index.php/6500_SPAN_the_RP
> Nick

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