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You have multiple places for problems to occur. Performance areas are: how fast can your disks (or arrays) pass bits how fast can your network devices pass bits how fast can your software translate between the two General notes: Linux has, in general, a po...

This is a page which includes my thoughts on documenting a live, running network. It will be perpetually under construction as my thoughts change depending on what problems I've recently had to deal with. It's also kind of a mess right now. Principle #1: It Is...

Thou shalt above all, maintain the integrity of the network. Thou shalt have a long term strategic direction. Thou shalt always opt for quality before expediency. Thou shalt meet the requirements, exceed the expectations and anticipate the needs of users. Tho...

The question is usually framed as Is Hardware RAID better than software RAID? Well actually it's usually framed as a statement: Hardware RAID is better than software RAID. The theory is usually two-fold: RAID operations are offloaded to a secondary processor,...

(May 6, 2010) Recent History At one of my customer sites, I have a pile of Sun X2200-M2 systems. After a recent move where the pile was moved from one location to another, I started having problems with a couple of them. One which had been reliable started thr...

(2013-08-15) 11:03:49 < xdroop> I just pulled another private /24 out of my ass for overlapping use. 11:04:07 < Myke> I know Windows isn't okay with IPs like 10.0.0.255/23 11:04:22 < Myke> or 10.0.1.0/23 11:04:38 < xdroop> Really? 11:04:45 < xdroop> I know W2K...

(11 January 2012) There seems to be an almost-declared war on email going these days. I have read of people abandoning email either temporarilly or permanently. I also read of CEOs deciding they want to ban email from their companies completely. I really don't...

Get along with everyone. Strive to be welcomed by all: the sportos, motorheads, geeks, sluts, bloods, wastoids, dweebies, dickheads. Be a righteous dude. Look out that window. How can you possibly be expected to handle school/work/insert-worry-here on a day l...

or, It Will Happen To You Too, Kid (15 November 2011) I had to laugh the other week. Some Ubuntu user was up in arms over the inclusion of Gnome 3 into the latest release of Ubuntu-current. For those of you not playing along at home, the controversy in Gnome 3...

Five User Experience Principles Keep it simple. But not simpler. Keep scalability in mind. End users are not dumb. Administrators are human beings, too.

(12 January 2007) This is just a little story illustrating what happens when you use the best tools for the job, not merely the best tools you have available. So my Dell laptop finally packed it in (mainboard failure -- at least, that what the Dell Dude who is...

Question: Why would anyone in their right mind build and install software from source code? (originally: I don't know why i build software without package managers.) Answer: Because you can customize it to your local requirements (AKA the Gentoo Lie) Because ...

(21 September 2011) The Problem The problem with the Blackberry App (or AppStore App (or whatever)) is that the apps version churn. It seems like every week or two you get a notification that one of the four free apps you've downloaded has an "update", and you...

(27 June 2012) on JunOS 10.4r5.5 Simple LAG Creation Tell the switch how many aggregated ethernet (ae) devices we are going to define on the switch: set chassis aggregated-devices ethernet device-count 2 This example permits you to define two ae devices, ae0 ...

(2016-09-07) Problem There's an edit session, that you are not connected to, that you want to close. Solution Find the other session (probably listed to you in the warning when you enter the edit mode): operator@router> show system users no-resolve operator ...

(2013-07-19) This is how I configure my EX2200 when I first get them. New EX2200 Initial Setup We reserve 10.30.1.99 as the IP address for a switch being set up. If you have a pre-allocated name and IP for the switch, you should substitute those for the releva...

(7 September 2012) Problem When you run switchwalk, it complains that a table is empty or missing: $ switchwalk 00:0C:29:22:8D:97 [...] sa1-41 ERROR: Requested table is empty or does not exist This is a snmp query made against the Q-Bridge-II table to identif...

(2014-08-13) These notes are for JunOS 12.3R3.4. You do not need an enhanced license to use Virtual Chassis on 12.3; I know that you do for some versions of JunOS 11. Reading the relevant section in book-software-ex-series-123-all.pdf , particularly the exampl...