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Cisco Live 2012

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I have arrived! Here's what I've got so far:

Registration is a breeze.

There are Cisco people everywhere directing traffic, even in the hotel lobby.

The bus is a little slow, but beats walking uphill.

Weather is perfect! Why don't I live here yet?

Keep checking back, more to come...

BGP AS List and potaroo

Have you ever wanted to see a list of all the BGP Autonomous Systems Numbers and what organization they are associated with? I did this morning and after some searching, here's what I found.

There is a cool website (cool in a nerdy BGP statistics sort of way) called potaroo.net that is "the personal site of Geoff Huston." The site has a blog and provides links to a variety of statistical analyses and reports on Internet BGP data.  No surprise that Geoff appears to work at APNIC.

Infoblox to host IPv6 "How to" webinar

World IPv6 Launch will be here June 6. If you haven't heard of it, this is the day where several large companies that have an Internet presence (Google, Yahoo, Facebook, etc.) will permanently enable IPv6 for their online services. 

The following day, June 7, Infoblox is featuring an IPv6 webinar with host Cricket Liu. This webinar will focus on the following topics:

Book Review: MPLS Fundamentals from Cisco Press


If you are in the market for a good MPLS resource, check out the Cisco Press book MPLS Fundamentals: A Comprehensive Introduction to MPLS Theory and Practice. I've nearly finished reading this over the past few weeks and it's definitely a great place to start if you have never really worked with MPLS.

Of course, everyone is still waiting for an MPLS CBT Nugget from Jeremy.  However, until something like that is created - if you need to know more about the technology this is a great resource.

TwitterChat this Morning - 9am PST

Update: Thanks to everyone who participated!
View the Transcript here...

My first Cisco Live 2012 is this morning (5/10/12) at 9am PST: TwitterChat!

Feel free to join #CLUS and hang between 9am - 10am. CBTNuggets will be continuing the fun from 10am - 11am at #CBTchat.

See you soon!

Jeremy

Care to TwitterChat?

Well, it appears my friend Adam beat me to the punch on the Cisco Live posting. So, here's my additions from a personal side.

  1. Cisco has scheduled me for a TwitterChat next week on Thursday- please come and jump in! This was surprisingly fun when we did it last year. Here's the information: http://www.ciscolive.com/us/attendees/social-networking/twitter/
  2. For those coming to Cisco Live 2012, I'll be presenting a wonderfully amazing and dazzling session (watch me pull a rabbit out of my hat!) on CCNA Voice. The session is scheduled for 12:30pm on Tuesday - if this is even half as fun as it was last year, it will be a blast!
  3. I'll also be doing a Cisco Press "Meet the Author" session at Cisco Live 2012 at 4:30pm on Tuesday  in the Cisco Press booth.
See you soon!

Cisco Live 365

Cisco has created a new rendition of their Cisco Live website called Cisco Live 365. You can register with the site for free and gain access to some of the conference materials presented at the various Cisco Live conferences around the world throughout the year.

If you are signed up for CiscoLive2012.com (because you are attending Cisco Live in San Diego this June), then your credentials for that website don't apparently work automatically at the new site. To get access to the new site using your current credentials, login to the old site CiscoLive2012.com, then click on Registration, and click on the huge button that says Enter Cisco Live 365. A new tab or window should open and voilà, you're in.

How to concatenate multiple text files into one

Command Line

Have you ever wanted to merge a bunch of text files together into one large one? For example, if you use a tool to go grab a bunch of show command results and output it to a text file per device, it's handy if you can have the operating system merge all that together for you. Many of you have likely done this at one point or another, but I figured it was worth capturing here to share the syntax.

So, if you are in a Windows command prompt, you can use the type command to output the contents of a file.

C:\>type text1.txt
This is a test. 

Then you can use the type command plus the double arrows to merge a bunch of files:

C:\>type *.txt >> merge.txt

text1.txt

text2.txt

text3.txt

text4.txt

This leaves you with all the original files plus a new one called merge.txt. Piece of cake.

GNS3: Save a little memory with VPSC

This tip was emailed to me and seems pretty sweet (haven't tested it). Check out this link:

http://www.freecode.com.cn/doku.php?id=wiki:vpcs

Rather than eating up resources using routers as hosts in GNS3, you can use a Virtual PC Simulator (VPSC) that can ping, traceroute, get a DHCP address, etc... 

While this is good in theory, I'm curious how difficult it is to roll this into the Windows version. With memory becoming a cheap commodity, it's just too easy to drag another router on the GNS3 landscape.

CBTNuggets Update: BGP Ready...What's Next?

Hello all!

Over the last week, I put the finishing touches on the Cisco BGP Series over at CBTNuggets - that's definitely a fun one! Now I'm charting out...what's next? The logical answer is MPLS (a sister series to BGP), but the rumors say that the MPLS certification will soon be discontinued and replaced with alternative Service Provider offerings.

So here's my grass-roots poll: What Cisco certification training should come next at CBTNuggets?

I've recently been breaking out of the "certification mold" with offerings like CCNA Labs: Cisco for the Real World (http://www.cbtnuggets.com/it-training-videos/series/cisco-ccna-labs-2011). If there's an idea like this that you might have, I'm all ears!

Upgrading 3750X can take longer than you think

I recently upgraded a Cisco 3750X stack to a newer version of IOS. Since the production system I was planning to upgrade had some critical systems on it, I tested the process on a stack in the lab first.

At the outset I figured "no problem, this will take a few minutes to reboot and we'll be back up and running." Little did I know I was in for a long wait... Unbeknownst to me the version of code I was upgrading to included a Microcode update which adds a considerable amount of time to the process... emphasis on considerable.

The stack was running 12.2-53.SE2 and I was upgrading it to 12.2-58.SE2, which at the time of the upgrade was the recommended 12 version (I've had problems with IOS 15 on this platform, so I'll be sticking with version 12 for now).

Networking 101 Video - Switch Latency

Jimmy Ray Purser from TechWise TV  provides a pretty good review of how switch performance is measured. Topics reviewed include cut-through switch latency, store and forward switch latency, FIFO, LIFO, and LILO. Check it out if you've always wanted to know how to measure the speed of a switch.

Here's a direct link if the video embed code doesn't load in your browser: http://youtu.be/C8cTrhcbOLc

Forced Memory Upgrade on a Cisco ASA 5505

ASA 5505

About a week ago, my home Internet connection started to show signs of degradation. Emails weren't being sent, websites partially loaded, and in general things were "slow". If this was an enterprise network and I was a non-technical user, I would have promptly opened a help desk ticket with the title of "the Internet is Down!" or "The network is slooow". Since this isn't exactly an enterprise network (cobbled together hodge-podge is a more accurate description) I knew it was up to me to make things right. So, I quickly put on my troubleshooting hat and went to work.

After a bit of looking (and reboots), I found a solid amber status light on my ASA5505. This was the last place I looked because the thing has been as solid as a brick for the past 4 years. I tried to connect to it via SSH and Console, neither worked. Rebooting it did nothing. 

Wireshark updated to version 1.6.6

A new version of wireshark has been released. A full list of features and updates are in the official announcement.

For reference here is the updated protocol support and new file capture support:

Updated Protocol Support

   ANSI A, BSSGP, DIAMETER, DTLS, GOOSE, GSM Management, GTP, HTTP,
   IAX2, IEEE 802.11, IPP, ISAKMP, ISO SSAP, MP2T, MPLS, MySQL, NTP,
   PacketBB, PGM, Radiotap, SSL, TCP, UDP, USB, WSP

  New and Updated Capture File Support

   Endace ERF, Pcap-NG, Tektronix K12

You can download the latest version here: http://www.wireshark.org/download.html

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