Tag Archives: ccie

CCIE and CCDE Evolving Technologies Study Guide Book Review

Evolving Technologies

It sure felt strange clicking Add to Cart for an ebook priced at $119.99. In fact, to be honest, it felt absurd. We cannot blame the authors, in the Pearson realm, you get zero input on book price.

I presume the logic here was – CCIE or CCDE candidates will pay more – a lot more – for their preparation products. I actually would not have been complaining here too much about the price had I been able to receive a print copy of the book as well. But sure enough – nothing. At 264 pages – the print book would not have been that short.

OK, I will shut up now about price and get into the review. This book certainly deserves it – because overall – it is really, really great!

Brad EdgeworthJason Gooley, and Ramiro Garza Rios (darn big deals in our industry) succeed here at doing what many of us (myself included) have failed at doing – in my opinion, they cover these evolving technologies in just the right level of detail we need and expect for our written exam pursuits. 

Here is a summary of my thoughts. We will start with the GOOD and quickly recap the few BAD.

THE GOOD

  • Having taken many (to say the least) of these exams that include Evolving Technology questions, it felt to me as if this book really does cover any area we might get poked in during an exam. Like all Cisco exams, you can feel a bit off balance with the question pool for a topic domain. You might get one ridiculously simple question on the cloud to see if you know what SaaS is all about, but then the very next question is asking you some very detailed question about orchestration using a Cisco tool. This book really seems to cover us no matter what Cisco throws our way. NOTE: Be sure to make flashcards covering the many, many details that are in these pages. Perhaps it is protocols in a table (IoT) in the book where you might get questions. So avoid the temptation of not REALLY studying this material.
  • The book contains some really fun and interesting hands-on work you can perform yourself and follow along with. This was a pleasant and unexpected surprise in a text of this nature.
  • This book is clearly not a copy paste from other materials. The tone and accessible language of the text really demonstrate that the authors each really knew their stuff for the respective sections and just explained these new technologies to us in a manner that made it a snap to understand.
  • Related to the previous bullet, the length of this text just feels spot on. Could you write this same text and have it consume Stephen King type length? Of course you could, but that would not serve students well!

THE BAD

  • I am not sure why the authors decided to not follow the blueprint order of topics letter for letter. Why move IoT to the first section when it is the last section of the blueprint? Why not have subsections named after the sub-bullets from the blueprint? I am convinced that every objective is actually covered and covered well in this text, it just would have been easier to find stuff if it mirrored the blueprint PDF.
  • No printed copy sure is a bummer. While I will do a Kindle or an iPad when forced to – I am old school – give me a book any day. In fact, especially for Cisco Press content.

While researching this post, I realize that buying it on Amazon was probably a mistake as it is locked up tight on my Kindle and I have already run into licensing issues trying to read it on my millions of screens. Over at Pearson IT Certification, it is cheaper and available in a PDF format.

http://www.pearsonitcertification.com/store/ccie-and-ccde-evolving-technologies-study-guide-9780789759726

CCIE DC – 1.1.a Link Aggregation – Virtual Port Channel Example

This post examines a sample configuration of a virtual port channel. This port channel is created between two Nexus 7K systems and downstream Nexus 5K systems. This is part of the link aggregation section of the exam requirements in CCIE Data Center. Below is the diagram you can use for reference in this example. We will only demonstrate the config of a single VPC peer since the other peer is simply a mirror of this configuration.

Virtual Port Channel

Our previous post on this subject focused on the configuration steps. You can find it here: https://www.ajsnetworking.com/ccie-dc-1-1-a-link-aggregation-configure-virtual-port-channels/

The Configuration

First, we will prepare the vPC keepalive link for this scenario. Do not be thrown off by the name of our VRF. This configuration does not technically fall under the vPC config (yet!).

N7K-A# configure terminal
N7K-A(config)#  vrf context VPC-KEEPALIVE
N7K-A(config-vrf)# interface ethernet 3/18
N7K-A(config-if)# no switchport
N7K-A(config-if)# vrf member VPC-KEEPALIVE
Warning: Deleted all L3 config on interface Ethernet3/18
N7K-A(config-if)# ip addr 209.165.200.225/24

Next, we will configure the vPC domain (after enabling the feature of course) and configure the peer-keepalive link we prepped.

N7K-A(config)# feature vpc
N7K-A(config)# vpc domain 10
N7K-A(config-vpc-domain)# peer-keepalive destination 209.165.200.226 source 209.165.200.225 vrf VPC-KEEPALIVE

Now, we configure a port channel between our vPC peers and configure it as the vPC peer link.

N7K-A(config-vpc-domain)# interface ethernet 3/16-17
N7K-A(config-if)# channel-group 10
N7K-A(config-if)# interface port-channel 10
N7K-A(config-if)# vpc peer-link

Next, we will head down to the N5K and configure a “plain ole” LACP port channel.

N5K-A# config t
N5K-A(config)# feature lacp
N5K-A(config)# int e 1/1-2
N5K-A(config-if-range)# channel-group 201 mode active

Now, it is time to configure the vPC on the N7K.

N7K-A(config-if)# feature lacp
N7K-A(config)# interface e 3/21
N7K-A(config-if)# channel-group 201 mode active
N7K-A(config-if)# int port-channel 201
N7K-A(config-if)# vpc 201

The Verification

You should note that you can and should perform verifications as you go along here. For example, you can verify reachability, check the port channels that are configured, and watch the progress of the vPC as you configure it. For brevity here, we will just end this post and this example with our critical show vpc command.

N7K-A(config-if)# show vpc brief
Legend:
     (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                          : 10
Peer status                            : peer adjacency formed ok
vPC keep-alive status                  : peer is alive
Configuration consistency status       : success
Per-vlan consistency status            : success
Type-2 consistency status              : success
vPC role                               : secondary
Number of vPCs configured              : 1
Peer Gateway                           : Disabled
Dual-active excluded VLANs and BDs     : -
Graceful Consistency Check             : Enabled
Auto-recovery status                   : Enabled (timeout = 240 seconds)
Operational Layer3 Peer-router         : Disabled
Self-isolation                         : Disabled

vPC Peer-link status
--------------------------------------------------------------------------------
id Port Status  Active vlans Active BDs
-- ---- ------ -------------------------------------------------------------
1  Po10 up      1,12 -

vPC status
------------------------------------------------------
id     Port        Status Consistency  Active VLANs
----- ------------ ------ ----------- ----------------
201    Po201       up      success     1,12

For even more information – check out this Cisco documentation at https://www.cisco.com/c/en/us/products/collateral/switches/nexus-5000-series-switches/design_guide_c07-625857.html
Pearson Education (InformIT)