Write Your Name In Your Clothes!
I’ll bet that at one time or other in your life, you’ve had your name written in your clothes. You know what I’m talking about – either you buy some specially made labels to stick in your clothing, or...
View ArticleGNS3 and Service Compress-Config Problems
I’m a huge fan of GNS3 as a network simulator. While it’s not as CPU efficient as the fabled, not-public, nobody-has-a-copy-honest IOU (IOS-on-Unix) which obviously I know nothing about (how could I?),...
View ArticleAn Open Letter Regarding AS-Path Access-Lists
Dear Cisco, Re: AS-Path Access-lists May we please have named as-path access lists in IOS? I’m really bored of my self-documenting configurations being effectively obfuscated by these ugly numbers I...
View ArticleThose Pesky Active BGP Sessions
You’re troubleshooting a routing problem; you check BGP and the neighbor shows as active. Great, let’s move on and look somewhere else. Right now a good proportion of you should be shouting at your...
View ArticleWorking With Numbered Access-Lists
Back in the day, I didn’t have any white hairs, you could get a bag of potato chips for a quarter, kids didn’t behave badly, and numbered access-lists were all you had to work with in IOS. If you still...
View ArticleTIP: IOS Route-Maps – What Not To Do
Today’s post is a quick tip on configuring a route-map in IOS, or more specifically, how not to configure it. Like almost everybody else, I am capable of making stupid mistakes. I don’t mean the ones...
View ArticleIOS Errors – Wood, Trees etc.
Today I’m sharing a “duh” moment that I think needs to be recorded partly for comedy value and, perhaps, partly to save somebody else the same fate. It’s one of those “it’s right in front of you,...
View ArticleWhen BGP Aggregates Go Bad
I’m taking a coffee break (actually two, as I also created a diagram for this post) to quickly share today’s routing fun with you – a brief look at when BGP aggregates go bad. Or at least, an obvious...
View ArticleWhen BGP Aggregates Go Badder
First, please accept my apologies for the terrible grammar in the title, but really, what better name could I use for a post that is the sequel to “When BGP Aggregates Go Bad“? Having learned one...
View ArticleMake Your Website Look Cuter on the iPhone
This isn’t a typical topic for me, but if you are running a website or blog and you don’t know what apple-touch-icon is, you really need to read on as you’re missing a key part of your website...
View ArticleNever Too Old To Learn – Route-Map Naming
It’s said that you’re never to old too learn. I agree, and in fact it’s one of the things that has kept me in the networking industry for so long; there’s always something new going on to keep me...
View ArticleNever Too Old To Learn – Show Config
Continuing to prove that we are never to old to learn, I bring another tip to the table today, this time to do with the show config. Of course, by that alone I show my age because I’m sure “show …...
View ArticleApproaching Network Simulation in GNS3
I’ve been running IOS simulations in Dynamips for a number of years now, and over the last few years in both dynagen and the ever-expanding GNS3, I’ve found a few guidelines that have remained useful...
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Those Pesky Active BGP Sessions
You’re troubleshooting a routing problem; you check BGP and the neighbor shows as active. Great, let’s move on and look somewhere else.Right now a good proportion of you should be shouting at your...
View ArticleClik here to view.
Working With Numbered Access-Lists
Back in the day, I didn’t have any white hairs, you could get a bag of potato chips for a quarter, kids didn’t behave badly, and numbered access-lists were all you had to work with in IOS.If you still...
View ArticleClik here to view.
TIP: IOS Route-Maps – What Not To Do
Today’s post is a quick tip on configuring a route-map in IOS, or more specifically, how not to configure it.Like almost everybody else, I am capable of making stupid mistakes. I don’t mean the ones...
View ArticleClik here to view.
IOS Errors – Wood, Trees etc.
Today I’m sharing a “duh” moment that I think needs to be recorded partly for comedy value and, perhaps, partly to save somebody else the same fate. It’s one of those “it’s right in front of you,...
View ArticleClik here to view.
When BGP Aggregates Go Bad
I’m taking a coffee break (actually two, as I also created a diagram for this post) to quickly share today’s routing fun with you – a brief look at when BGP aggregates go bad. Or at least, an obvious...
View ArticleClik here to view.
When BGP Aggregates Go Badder
First, please accept my apologies for the terrible grammar in the title, but really, what better name could I use for a post that is the sequel to “When BGP Aggregates Go Bad“?Having learned one...
View ArticleClik here to view.
Make Your Website Look Cuter on the iPhone
This isn’t a typical topic for me, but if you are running a website or blog and you don’t know what apple-touch-icon is, you really need to read on as you’re missing a key part of your website...
View Article