[125393] in North American Network Operators' Group
Re: Router for Metro Ethernet
daemon@ATHENA.MIT.EDU (Tim Franklin)
Wed Apr 14 06:07:40 2010
Date: Wed, 14 Apr 2010 10:07:28 +0000 (GMT)
From: Tim Franklin <tim@pelican.org>
To: nanog@nanog.org
In-Reply-To: <485ED9BA02629E4BBBA53AC892EDA50E0AE01686@usmsxt104.mwd.h2o>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
> Some caveats:
>
> 1. only the ME version supports MPLS, in case you want to overlay an
> MPLS TE/VPN network on a Metro Ethernet Forum (MEF) ELAN raw Ethernet
> service.
> 2. If you are using IP multicast, make sure that the Metro Ethernet
> provider supports PIM snooping, otherwise (S,G) directed multicast
> packets will be flooded out all service provider ports that connect
> to
> your devices, emulating a 1993-style Ethernet hub.
3. Only "switch-style" QoS, not full-blown MQC. The 3750ME has two "router" ports which do mostly support MQC, but still have some limitations (e.g. traffic locally sourced from the device is not correctly classified / marked). Which is all kind of what you'd expect from a switch, but may be relevent if the original question was "which router?"
Regards,
Tim.
