[117368] in North American Network Operators' Group
Re: WS-X6148A-GE-TX performance question
daemon@ATHENA.MIT.EDU (Nick Hilliard)
Thu Sep 10 18:52:03 2009
X-Envelope-To: nanog@nanog.org
Date: Thu, 10 Sep 2009 23:51:03 +0100
From: Nick Hilliard <nick@foobar.org>
To: Scott Spencer <scott@dwc-computer.com>
In-Reply-To: <A47E5001BE1A4943B99F123F23EACDD8@HPWORKSTATION>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 10/09/2009 22:17, Scott Spencer wrote:
> I can't really find anything much on X6148A internal architecture online,
> but it would seem that each port gets its own 1gb/s link to the
> card/backplane, and that the bottleneck then is the 32gb/s backplane (which
> is fine, as long as it's not 1 gb/s per each set of 8 ports!).
Sadly, it is 1Gb per each set of 8 ports. The WS-X6148-GE-TX line card
has its uses, just not in the data center. To recap on the thread a
couple of weeks ago:
- no storm control
- no port security
- 1G aggregate traffic for each group of 8 ports (i.e. think of it as 6
x gigabit ethernet hubs with shared input buffers connected into a 32G
backplane)
- 2 ports per etherchannel
It's not a service provider blade and doesn't belong in a data center
switch setup. Don't be disappointed by this: it was designed to be an
aggregation blade for enterprise desktop usage and is quite useful in
that context.
Nick
