Here are some more notes from my studies.  Of course, no one cares about them but me, but it’s my blog.  I’m sure someone will find it useful.  Please help to correct dumbass mistakes. Congestion Speed mismatch – traffic leaves a lower-bandwidth interface than the…

Here’s another set of notes from my ONT studies.  I’m sure someone will find it useful.  Please help to correct dumbass mistakes. Classification is done with traffic desriptors Ingress interface CoS value on ISL or 802.1P frames Source/destination IP address IP Precedence or DSCP value…

I’ll try to keep it a little shorter this time. Major issues for converged enterprise networks Available bandwidth: competition among applications Fixes Increase bandwidth: More power! Properly queue based on classification and marking: QoS Compress: cRTP, TCP header compression, etc. Delay: Lead time to get…

Here are some of the notes I’ve been taking while reading over the ONT book. I hope it benefits somebody.  Feel free to correct any stupid mistakes as a paraphrase to avoid a lawsuit. There’s way too much info here.  I’ll refine the process a…

It seems that we have another piece of evidence that Cisco doesn’t like the CSM.  From what I’m able to creatively interpret, the software developers didn’t think anyone would be running the CSM for very long, so they set a variable that expires CSM-inserted cookies…

Here we are at the end of another year.  It’s been a pretty good one for me – the wife got a new job, we have a new house, we’re in good health.  I hope that you, too, have had a great year. Here are…

I took and passed the ISCW test today.  I was super-nervous going into it, which is weird for me, but I finally calmed down after the first few questions.  Here’s my take.  I don’t want to get into any trouble so I’m not going to…

I coworker sent over a link today that got me thinking about an old adage that I’ve been sharing for years.  The link actually has nothing to do with the philosophy but did trigger a random spewing of words from my brain. Here’s what I…