On Thu, Nov 12, 2009 at 2:40 PM, Bulger, Tim <Tim_Bulger@polk.com> wrote:
If you use stackable switches, you can stack across cabinets (up to 3 with 1 meter Cisco 3750 Stackwise), and uplink on the ends. It's a pretty solid layout if you plan your port needs properly based on NIC density and cabinet size, plus you can cable cleanly to an adjacent cabinet's switch if necessary.
Slightly off-topic.. Consider offloading 100Mb connections like PDUs, DRAC/iLO, etc. to lower cost switches to get the most out of your premium ports.
Agreed. We use Netgear gigabit unmanaged switches for what Tim suggests to save the higher-cost-per-port switchports for server gear. -brandon
-Tim
-----Original Message----- From: Seth Mattinen [mailto:sethm@rollernet.us] Sent: Thursday, November 12, 2009 3:20 PM To: 'nanog@nanog.org' Subject: Re: Layer 2 vs. Layer 3 to TOR
Steve Feldman wrote:
On Nov 12, 2009, at 2:48 PM, Raj Singh wrote:
Guys,
I am wondering how many of you are doing layer 3 to top of rack switches and what the pros and cons are. Also, if you are doing layer 3 to top of rack do you guys have any links to published white papers on it?
Dani Roisman gave an excellent talk on this subject at NANOG 46 in Philadelpha:
http://www.nanog.org/meetings/nanog46/abstracts.php?pt=MTQwOCZuYW5vZzQ2&nm=nanog46
I'd always wondered how you make a subnet available across racks with L3 rack switching. It seems that you don't.
~Seth
-- Brandon Galbraith Mobile: 630.400.6992 FNAL: 630.840.2141