[j-nsp] EX series and ipv6 multicast / mld.. Doesn't forward with IGMP-SNOOPING enabled

[Chris Evans]

Yeah that simple piece works fine for me, its just host to host multicast
that isn't working. Point in case DHCPv6 doesn't work. The hosts are
targeting the well known ff02::1:3 and ff05::1:5 addresses and it does not
flood it to the server unless igmp-snooping is disabled.


Here is a matching bug on EX8200 in the 10.4 release notes.

On EX8200 switches, when IGMP snooping is enabled on an interface, the IPv6
multicast Layer 2 control frame is not forwarded to other interfaces in the
same VLAN. The result is that IPv6 and VRRP for IPv6 neighbor solicitation
fails. [PR/456700: This issue has been resolved.]

On Tue, Mar 29, 2011 at 7:52 AM, Chuck Anderson <cra at wpi.edu> wrote:

> On Mon, Mar 28, 2011 at 11:43:35PM -0400, Chris Evans wrote:
> > Has anyone here tested ipv6 multicast on the EX4200 platform to only find
> > that it doesn't forward IPv6 multicast when IGMP-SNOOPING is enabled? I
> > found a bug for this on the EX8200 series 10.4 release saying it was
> fixed,
> > but the EX4200 still doesn't work.
> >
> > Has anyone tested?
>
> When I tested, adding a family inet6 address (even just link-local) to
> the vlan l3-interface allowed IPv6 to work on that VLAN with
> igmp-snooping enabled.  I didn't explicitly test ipv6 multicast
> applications, other than the implicit multicast used by neighbor
> discovery, router advertisements, etc.  I'm not using mld.
>