Once you’ve got your CCNA, you’re ready to move on to the next level, the Professional certifications. For years, Cisco had one Professional certification, the Cisco Certified Network Professional (CCNP) certification. Over time, Cisco has expanded this level of certifications to include the Cisco Certified Security Professional (CCSP) and Cisco Certified Voice Professional (CCVP).
With security [...]
If there’s one CCNP / BSCI topic that looks so easy but can lead to a real headache, it’s route redistribution. I’m not even talking about the routing loops and suboptimal routing that can result when route redistribution is done without proper planning - I’m talking about the basic commands themselves. Leaving [...]
A major part of your BSCI and CCNP exam success is mastering BGP, and that includes filtering BGP routing updates. In this tutorial, we’ll take a look at how to filter BGP updates with prefix lists.
R4 is advertising three networks via BGP. The downstream router R3 sees these routes and places them into its [...]
Like TCP, BGP is connection-oriented. An underlying connection between two BGP speakers is established before any routing information is exchanged. This connection takes place on TCP port 179. As with EIGRP and OSPF, keepalive messages are sent out by the BGP speakers in order to keep this relationship alive.
Once the connection is established, [...]
When studying for your BSCI exam for the CCNP, you get your first taste of BGP. One of the major differences between BGP and the other protocols you’ve studied to date is that BGP uses attributes to describe paths, and to influence the selection of one path over the other.
In this free tutorial, we’re [...]
When you’re studying for the BSCI exam on the way to earning your CCNP certification, it’s safe to say that BGP is like nothing you’ve studied to this point. BGP is an external routing protocol used primarily by Internet Service Providers (ISPs). Unless you work for an ISP today or in the future, you [...]
When you’re studying for the CCNP certification, especially the BSCI exam, you must gain a solid understanding of BGP. BGP isn’t just one of the biggest topics on the BSCI exam, it’s one of the largest. BGP has a great many details that must be mastered for BSCI success, and those of you [...]
When you’re studying for the BSCI exam on the way to earning your CCNP certification, you’ve got to master the use of BGP attributes. These attributes allow you to manipulate the path or paths that BGP will use to reach a given destination when multiple paths to that destination exist.
In this free BGP tutorial, we’re [...]
Once you earn your CCNA certification, you’ve got quite a few exciting choices ahead of you! The majority of CCNAs go on to pursue another Cisco certification, and this is a wise decision. The more you know, the more valuable you are in today’s IT market.
A question I’m often asked by new CCNAs [...]
When you’re studying for your BSCI exam and CCNP certification, you quickly realize that BGP is a whole new world from anything you’ve previously studies. One topic that sometimes confuses CCNP candidates is when a BGP route reflector needs to be configured.
In the following example, the routers R1, R2, and R3 are all in [...]
