[137265] in North American Network Operators' Group
Re: 10GBASE-T Switches
daemon@ATHENA.MIT.EDU (Daniel Roesen)
Thu Feb 10 14:34:44 2011
Date: Thu, 10 Feb 2011 20:33:43 +0100
From: Daniel Roesen <dr@cluenet.de>
To: nanog@nanog.org
Mail-Followup-To: nanog@nanog.org
In-Reply-To: <20110210150554.GB8961@angus.ind.WPI.EDU>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Thu, Feb 10, 2011 at 10:05:54AM -0500, Chuck Anderson wrote:
> Juniper EX4500 has 40 fixed SFP/SFP+ ports plus 2 uplink modules that
> can contain 4 SFP/SFP+ ports each for a total of 48 10GBASE-X ports.
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.
Best regards,
Daniel
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