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August 2009, Week 3

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Subject:
Re: 918/LX network problem
From:
"Hoxsie, Howard" <[log in to unmask]>
Reply To:
Hoxsie, Howard
Date:
Mon, 17 Aug 2009 13:02:06 -0700
Content-Type:
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Years ago I was told that it is also helpful to keep the HP3K on its own
sub-net.  Something about much fewer interrupts to throw away?

Howard

-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
Behalf Of Jeff Kell
Sent: Monday, August 17, 2009 11:48 AM
To: [log in to unmask]
Subject: Re: [HP3000-L] 918/LX network problem

Johnson, Tracy wrote:
> I like what Jeff says here, how much youtube are your folks watching
on
> this switch while waiting to Xmit?

YouTube is largely flash over HTTP, port 80, TCP.  It is relatively
well-behaved in this scenario, unless your users have configured some
crazily-large TCP windows and YouTube even supports a large-ish window. 
TCP only allows a few, at most, outstanding ACKs per connection.

Streaming UDP is things like H.323, Skype, some Peer-to-Peer
(Gnutella/Gnucleus, eDonkey, Blubster/Picolet, newer encrypted
BitTorrent), Syslog traffic, etc.

Jeff

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