QoS Progress
I have been working on QoS and yeah it has been slow. I want to take my time in covering every single topic. Here is where I stand as of right now.
Custom Queueing
Custom Queueing is a legacy Congestion Management process that can be used to create minimum bandwidth reservation in the output queue of a given interface. Custom Queueing has a total of 16 queues (1 system and 15 user-defined).
Priority Queueing
Priority queue uses 4 queues: high, medium, normal and low. These queues have pre-assigned priority that cannot be changed. Packets in these queues are dequeued in the order that means that you can starve the lower priority queues.
Class-based WFQ
CBWFQ extends the WFQ functionality so it can support user-defined classes. Here are a few key points I have found about CBWFQ. Read more
Starting QoS Prep
I have decided to dedicate a week to QoS prep since that’s one of those topics that can haunt you in the CCIE Lab exam. I will follow the same steps as I did during Security prep, one topic at a time.
Finished working through Security
I have not been able to update my progress as quickly as I would have liked. Work has been busy along with personal commitments 
So I think I have covered security for right now and have a few things to review.
Still working through Security
I have been humming along through the security section on the blueprint and IE’s workbooks. My goal is to be very fluent with the common security configurations like reflexive ACLs, Dynamic ACLs etc before my lab.
Jared Scrivener’s recommended R&S Books
Jared Scrivener over at IPexpert has a nice post about the minimum books a CCIE R&S candidate should read. I actually own 6 out of those 7 books the only exception being the multicast book.
Common Security Configurations
I am working through IE’s Vol 1 security section and it has been great so far. I have done this before but never went through it in such detail. Very first task is related to permitting certain types of traffic while denying and logging the rest.
Zooming in on Security
After attempting 4 IE Mock labs and various IE Vol 2 labs, I have a good understanding of my weaknesses. During the next month or so I plan on isolating these sections and will be labbing them up day and night.
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