: BGP is notoriously slow and filled with intricate attributes. Jeremy breaks down the "why" behind every command.
The 642-661 exam, formally titled was a core component of the CCIP track and was widely considered one of the most challenging tests in Cisco's portfolio. To pass, candidates had to master the inner workings of the Border Gateway Protocol, which is the routing protocol that makes the global internet function. The exam's topics reflected this heavy responsibility, requiring a deep understanding of BGP theory, configuration, and path selection:
The following configurations illustrate the classic syntax taught in the CBT Nuggets series for establishing basic peerings and manipulating paths. Basic eBGP and iBGP Peering
Cioara details the connection states: Idle, Connect, Active, OpenSent, OpenConfirm, and Established. 2. Internal BGP (iBGP) vs. External BGP (eBGP)
One of the most challenging aspects of enterprise BGP deployment is managing the iBGP split-horizon rule, which dictates that a BGP router cannot advertise a route learned from an iBGP peer to another iBGP peer. Cioara spends significant time detailing the two primary mechanisms used to scale networks without requiring a full mesh of peerings: cbt nuggets cisco ccip bgp 642661 by jeremy cioara work
CBT Nuggets series here: http://www.cbtnuggets.com/it-training-videos/it-nuggets-library/series/csco_642_661. YouTube·CBT Nuggets Opinions on the CBT nuggets course for the ENCOR exam?
Jeremy Cioara is widely regarded as one of the most engaging instructors in the IT training industry. His approach in the CBT Nuggets BGP series disrupted the traditional, dry methodology of technical lecturing through several distinct pedagogical strategies:
: Setting up route maps and prefix lists to filter routes safely without disrupting neighbors. ⚡ Why Jeremy Cioara's Work is Highly Regarded
Are you studying for a (like CCNP Enterprise or Service Provider)? : BGP is notoriously slow and filled with
: Instead of boring slides, Jeremy draws out network topologies in real time, helping students visualize data flow.
Breaking a large Autonomous System down into smaller, private sub-ASs to reduce peering requirements.
, a trainer since 2003, is known for an enthusiastic, humor-filled teaching style designed to inspire learners to go beyond the curriculum. His BGP training, specifically the 642-661 series, was created during a transitional period for Cisco’s professional-level certifications. The Evolution of the Course
Manipulating the algorithm using attributes like Local Preference, AS-Path, and MED. To pass, candidates had to master the inner
In a large service provider network, forming a full mesh of IBGP peerings becomes mathematically unsustainable. The course dedicated several deep-dive sessions to solving this scale problem:
Used to influence how external neighbors enter your AS. Module 3: Scalability and Transit AS Policy
The course initiates with the architectural differences between Interior Gateway Protocols (IGPs like OSPF and EIGRP) and Exterior Gateway Protocols (EGPs, specifically BGP). Cioara outlines the mechanics of establishing Internal BGP (iBGP) and External BGP (eBGP) peerings. Key concepts covered include: