[137267] in North American Network Operators' Group
Re: 10GBASE-T Switches
daemon@ATHENA.MIT.EDU (Daniel Roesen)
Thu Feb 10 14:43:39 2011
Date: Thu, 10 Feb 2011 20:42:52 +0100
From: Daniel Roesen <dr@cluenet.de>
To: nanog@nanog.org
Mail-Followup-To: nanog@nanog.org
In-Reply-To: <20110210193343.GA16971@srv03.cluenet.de>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Thu, Feb 10, 2011 at 08:33:43PM +0100, Daniel Roesen wrote:
> 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.
I should add that we're quite happy with the EX4500 on the features it
has (want QinQ yesterday, prettypretty please). No datacenter usage though.
Best regards,
Daniel
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