Nov
03
In this post, we are going to continue troubleshooting with the Trouble Ticket from Part 1 of this series. If you want to check out Part 1, just click here. When we finished last time, we had discovered and corrected an issue with the attempt at prefix aggregation on Transylvania. Read More
Oct
31
Things sure can get spooky in the Troubleshooting section of the new Version 4 Blueprint! Cisco can present a pretty vague issue; give you a very lame diagram; and then really press you for time to solve the Trouble Ticket. In this blog post, I will walk you through this graveyard and attempt to provide some ideas on an efficient and effective approach. For much more detail and practice, our premier products for this exam section are the Volume 4 workbook (currently being edited and improved... Read More
May
24
Hi Everyone, we've just posted the remaining labs in the BGP sections and the content should be available to all subscribed accounts. There are now 61 feature-focused labs in total, listed below. From now on, we will focus on the new blueprint topics for CCIE R&S track, as outlined in New CCIE R&S Reload. The updates for VOL1 and VOL2 will go in parallel. Anyone preparing to the new lab according to the new blueprint could safely use the current labs for their practice and practice the new... Read More
May
19
Hi Everyone, Read More
May
01
The problem of unequal-cost load-balancing Have you ever wondered why among all IGPs only EIGRP supports unequal-cost load balancing (UCLB)? Is there any special reason why only EIGRP supports this feature? Apparently, there is. Let’s start with the basic idea of equal-cost load-balancing (ECLB). This one is simple: if there are multiple paths to the same destination with equal costs, it is reasonable to use them all and share traffic equally among the paths. Alternate paths are guaranteed to... Read More
Apr
28
Hi everyone, the new section has been posted and should appear under every account subscribed to IEWB-RS VOL1 v5.0. This is an initial update, containing the following 35 technology-focused labs: Establishing iBGP Peerings Establishing EBGP Peerings BGP Update Source Modification Multihop EBGP Peerings Neighbor Disable-Connected-Check Authenticating BGP Peerings iBGP Route Reflection Large Scale iBGP Route Reflection with Clusters iBGP Confederation BGP Next-Hop Processing - Next-Hop-Self BGP... Read More
Feb
17
The BGP section for Internetwork Expert's CCIE R&S Lab Workbook Volume 1 Version 5 is underway. The preliminary topics covered are as followed, but will be expanded before the final revision is released.  Expect updates to be posted on this section bi-weekly until completion. Establishing iBGP Peerings Establishing EBGP Peerings BGP Update Source Modification Multihop EBGP Peerings Neighbor Disable-Connected-Check Authenticating BGP Peerings iBGP Route Reflection Large Scale iBGP Route... Read More
May
05
Hi Brian, Read More
Feb
22
One common problem that causes candidates to fail the CCIE Routing & Switching Lab Exam is the lack of complete IP reachability to various segments used in the network topology. However, due to the short time constraints of the lab exam itself it can be difficult to dedicate enough time to properly verify that reachability exists between all relevant segments. In order to solve this problem two very useful features can be implemented during the lab exam, TCL scripting on the routers and macro... Read More
Feb
06
Guys, Read More

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