Looks like the culprit in the recent Cisco debacle is the Intel Atom “System on Chip” (SoC) that Cisco used in it’s gear. My sources within Cisco won’t give up the goods, but many seem to be pointing to Cisco, although a single source at Cisco seemed to indicate there was another player included in […]
Cisco goes public with Clock Signal Component Issue
A couple months ago many engineers started hearing rumors regarding an ISR 4331 recall, and problems surrounding the device. Until this week, none of us had very good information, but it seems that today Cisco has officially released some information regarding the problem. Many of us have received phone calls at this time from our […]
Cisco VIRL released into the wild
After much waiting from all of us, Cisco has released, on “cyber Monday” no less, VIRL. As you may remember, VIRL was the talk of CLUS 2013, and many of us have been eagerly waiting for this tool ever since. For those of you out of the loop, VIRL enabled users to rapidly design, configure […]
AS-Path Filtering
Before we get into the how, let’s talk about the why. According to the CIDR Report, the global IPv4 routing table sits at about 525,000 routes, it has doubled in size since mid 2008 and continues to press upwards at an accelerated rate. This momentum, which in my estimate started around 2006, will most likely […]
Cisco ISR 4000 – Now with more licensing!
This week at Interop NYC, Cisco launched it’s ISR 4000 Series. This is a new approach for them focused on delivering services to your branch offices. Cisco has dubbed this new approach the Intelligent WAN (IWAN) — but before we talk about that, let’s talk about hardware. Those of us that have been paying attention […]
Installing VMware tools on Cisco ACS
As of ACS v5.4 Cisco has finally included VMware tools for their ADE OS. Unfortunately, when you upgrade, they do not get installed automatically as the installation is triggered during the initial install. This post is for those of us that have upgraded to version 5.4 and didn’t choose to do a fresh install. First […]
Using Deny ACEs in your PBR ACL on your Nexus 7k
Quite a while ago I had a need for some network duct tape… Policy Based Routing while useful should only IMHO be used as a temporary fix. But as you know, temporary things soon become part of production and they end up staying around far too long. But I digress. I had a need for […]
Cisco ASA Packet Captures for Fun and Profit
As many of you know my background isn’t in enterprise, but I currently fill that role in my $job. In order to succeed I’ve had to develop many new skills including learning Cisco Wireless, UCS, a little Fibre Channel, and of course Cisco ASA. While I have been using firewalls for many years, I’ve never […]
Cisco Systems Awesomesauce aka Full Tilt Boogie
First of all, I want to say thank you to everyone from Cisco Systems for inviting us into the CCIC (Cisco Cloud Innovation Center), this was an amazing room to hold our discussions. We started off with a greeting from Omar Sultan who then brought our old friend Ron Fuller. Ron gave us a quick […]
Policy Based Routing
Policy based routing is the process of altering a packets path based on criteria other than the destination address, commonly referred to as ‘policy routing’. PBR (Policy Based Routing, not Pabst Blue Ribbon… ) can be used to affect the flow of traffic based on source address, the size of the packet, the protocol of […]
