On Thu, 2011-02-10 at 20:33 +0100, Daniel Roesen wrote: > Be aware, that IGMP snooping breaks some(!) IPv6 multicast (e.g. > DHCPv6). Affects whole EX-series and current plan is to fix it sometime > end of year (Q4 release). If you use IPv4 multicast and need IGMP > snooping to prevent flooding and plan to use e.g. stateful DHCPv6, that > might be a showstopper for now and the VLANs where IGMP snooping is > enabled.
Not disagreeing, I've never met this device, just curious about the problem and wondering if it is a generic class of problem. Is this device supposed to be IPv6-capable? If so, IGMP snooping and MLD snooping should be able to coexist, I'd have thought. In fact, it will be a major blow for the future of dual-stacking if they can't. So is the problem of which you speak just a bug, or is it an artifact of the switch not being IPv6 capable and so limiting broadcasts at the ethernet level to IGMP-discovered listeners only, ignoring IPv6 multicast listeners? Or something :-) Also. why does it only affect DHCPv6? Or was that just an example of a service that would be affected by the problem? Regards, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer (ka...@biplane.com.au) +61-2-64957160 (h) http://www.biplane.com.au/kauer/ +61-428-957160 (mob) GPG fingerprint: DA41 51B1 1481 16E1 F7E2 B2E9 3007 14ED 5736 F687 Old fingerprint: B386 7819 B227 2961 8301 C5A9 2EBC 754B CD97 0156
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