Re: NANOG Digest, Vol 26, Issue 122

2010-03-24 Thread Nathan Ward
On 25/03/2010, at 4:32 PM, Rudolph Daniel wrote:

> Hi Joe
> You guys ever mount your racks on Barry mounts= vibration mounts..with so
> many shakes you may need to.
> RD

Nope.

Instead, we stick it at the top of big towers that buffer the vibrations as 
they go up the tower.
http://en.wikipedia.org/wiki/Sky_Tower

From memory, we can thank/blame Joe for much of that.

Up that tower we have the main switches for the Auckland Peering Exchange 
(which has in the last few years become a bit more distributed), the (main, or 
only) POPs for a bunch of offshore transit, including Pacnet and Vocus, and 
also an F-root instance.

From memory it's the highest AGL peering exchange in the world. Probably the 
highest F-Root instance in the world as well.

When there are high winds, the service lift that stops at the right levels 
cannot run, because it's on a longer shaft and so moves around a lot more. So 
you have to take the regular tourist glass-bottomed lift and then walk down 
about 6 flights to the comms floors.
Also in moderate winds any unfastened cabinet doors will move with the sway of 
the tower. Try going up there at 4am after watching a thriller.

Also the floor to ceiling glass about 2 feet from the bottom of the ladder 
you're at the top of a 50RU rack with. Plus the swaying building.
You get over your vertigo pretty quickly, or you just don't go up the tower 
more than once.

--
Nathan Ward


Re: NANOG Digest, Vol 26, Issue 122

2010-03-24 Thread Rudolph Daniel
to get
> blown
> > away, see the results here:
> >
> > F5 - Peaked 160k completed transactions a minute sustained for 10
> minutes,
> > 0 errors, 112ms average transaction response time
> > A10 - Held 60k completed transactions a minute sustained for 10 minutes,
> 0
> > errors, 360ms average transaction response time
> >
> > If anyone is interested in the graphs I think I can still pull them out
> of
> > gomez. Though notable that this was all done a year ago, so things might
> be
> > different now.
> >
> > ~J
> >
> >
> > -Original Message-
> > From: Welch, Bryan [mailto:bryan.we...@arrisi.com]
> > Sent: Tuesday, March 23, 2010 8:35 PM
> > To: nanog@nanog.org
> > Subject: Experiences with A10 AX series Load Balancers?
> >
> > Does anyone have any experiences good/bad/indifferent with this company
> and
> > their products?  They claim 2x the performance at ? the cost and am a bit
> > leery as you can imagine.
> >
> > We are looking to replace our aging F5 BigIP LTM's and will be evaluating
> > these along with the Netscaler and new generation F5 boxes.
> >
> >
> >
> >
> > Regards,
> >
> > Bryan
> >
> >
> >
>
>
> --
> --  Darren Bolding  --
> --  dar...@bolding.org   --
>
>
> --
>
> Message: 10
> Date: Wed, 24 Mar 2010 18:50:42 -0700
> From: "Welch, Bryan" 
> Subject: RE: Experiences with A10 AX series Load Balancers?
> To: Darren Bolding , Justin Horstman
>
> Cc: "nanog@nanog.org" 
> Message-ID:
><
> dfa5aecdec85ee4087d45c463c19b3751341839...@kwaexmail1.arrs.arrisi.com>
>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Yes, agreed.  I think the Netscaler falls into the category of the Cisco in
> this respect .  Seems the F5 gear is the 1000lb gorilla in this
> category and for the most part we have no reason to look anywhere else other
> than doing our own due diligence with respect to the other vendor offerings
> in this space.
>
>
>
> Regards,
>
> Bryan
>
> From: packetmon...@gmail.com [mailto:packetmon...@gmail.com] On Behalf Of
> Darren Bolding
> Sent: Wednesday, March 24, 2010 6:46 PM
> To: Justin Horstman
> Cc: Welch, Bryan; nanog@nanog.org
> Subject: Re: Experiences with A10 AX series Load Balancers?
>
> Very interesting to see about A10's performance- I've heard mixed things
> about them.
>
> Just an FYI, the newer F5 platforms don't utilize the ASIC's- the
> performance curve of general-purpose CPU's has once again eclipsed what can
> be done with specialized silicon without aggressive (and expensive) revision
> cycles.  The ASIC's also could only be used in simpler virtual server
> configurations and with certain subsets of iRules.
>
> That said, nothing else I'm aware of provides the functionality of iRules.
>  I've used netscalers only a relatively small amount- and they are nice-
> particularly if your requirements are within their feature set- but my
> experience has been that things I take for granted using an iRule are
> seriously painful to implement on a netscaler.
>
> --D
>
> On Wed, Mar 24, 2010 at 3:33 PM, Justin Horstman <
> jhorst...@adknowledge.com<mailto:jhorst...@adknowledge.com>> wrote:
> The boxes do alright at low load levels. They do not have an asic tech like
> the F5s so choke on large amounts of traffic. Management is a bit immature
> and you will find yourself having to use the CLI and the Gui to accomplish
> most advanced tasks.
>
> When we put them head to head A10 AX3200 vs F5 6400 ltm (note: 6400 was
> what we were looking to replace)
>
> Test:
> 1000 concurrent users from Gomez's Networks Loadtesting platform hitting as
> fast as the requests would close, going through our standard vip config on
> the f5, and the A10 engineering teams 3 best efforts  to beat that config
> that balanced between two Identical Dell 1950 servers serving  a php page
> that responded with a random number (to avoid caching). The 6400 we used was
> in production at the time, and was older so we were expecting to get blown
> away, see the results here:
>
> F5 - Peaked 160k completed transactions a minute sustained for 10 minutes,
> 0 errors, 112ms average transaction response time
> A10 - Held 60k completed transactions a minute sustained for 10 minutes, 0
> errors, 360ms average transaction response time
>
> If anyone is interested in the graphs I think I can still pull them out of
> gomez. Though notable that this was all done a year ago, s