nanog mailing list archives

Re: 10GBase-t switch


From: Joel Jaeggli <joelja () bogus com>
Date: Mon, 15 Mar 2010 16:51:37 -0700



On 03/15/2010 04:30 PM, George Bonser wrote:



-----Original Message-----
From: Dave Temkin
Sent: Thursday, March 11, 2010 12:51 PM
To: Kevin Oberman
Cc: nanog () nanog org
Subject: Re: 10GBase-t switch

Can you point to another 1U box that has more than 16MB per-port
buffer?

-Dave

Anyone know what the buffer depth is on the Brocade TurboIron 24x?  One
thing to keep in mind is that neither the Arista nor the Brocade
TurboIron are store and forward, they are both "cut through" switches
which means they use less buffering for a given amount of traffic.
Basically, a packet is already going out the egress interface before it
is even completely received on the ingress interface.

Strickly speaking when mixed 1Gb/10Gb configurations are supported (as
the original poster was requesting) cut-through forwarding no-longer works.

I have them (TI24X) in production and they work ok. They are lacking
some features of the larger switches, though.  No MRP or stp-group
stuff.  But they are a decent switch for the price.

George





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