Cisco CCNP / BSCI Certification: Introduction To ISIS Terminology: Unterschied zwischen den Versionen
| Zeile 1: | Zeile 1: | ||
| − | When you're studying to pass the BSCI exam and earn your CCNP certification, you | + | When you're studying to pass the BSCI exam and earn your CCNP certification, you are going to be introduced to ISIS. ISIS and OSPF are both link-state protocols, but ISIS functions really differently from OSPF. You need to master these specifics in order to earn your CCNP.<br><br>One of the key differences amongst OSPF and ISIS will be evident to you when you first begin your BSCI exam studies, and that is the terminology. ISIS makes use of terms that no other protocol you have studied to date uses, and understanding these new terms is the initial step to BSCI and CCNP exam good results.<br><br>Initial off, what does "IS" stand for in "ISIS"? It stands for "Intermediate Program", which sounds like a group of routers. As opposed to Autonomous Systems, which are logical groups [http://jamaicadesignedbyjehovah.com/read_blog/46252/cisco-ccnp-bsci-certification:-introduction-to-isis-terminology enagic] of routers, an Intermediate System is just a single router. That's it.<br><br>You are going to also turn out to be familiar with Finish Systems, referred to in ISIS as an "ES". The Finish Method is merely an end host.<br><br>ISIS and OSPF both use the idea of areas, but ISIS requires a distinct method to this notion. ISIS routers use three diverse types of routing levels, according to the region a router has been placed in. Level two routers are connected only to the backbone and serve as a transit device among [http://www.afgtv.net/read_blog/38865/cisco-ccnp-bsci-certification:-introduction-to-isis-terminology find out more] non-backbone areas. Level 1 routers are entirely internal to a non-backbone area.<br><br>ISIS utilizes both Level-1 and Level-2 Hellos, meaning that the two types of routers just mentioned can not type an adjacency. Luckily for us, there is a middle ground, and that is the Level 1-2 router. These routers connect non-backbone regions to backbone locations. L1-L2 routers maintain two separate routing tables, a single for L1 routing and another for L2 routing. This is the default setting for a Cisco router, and L1-L2 routers can type adjacencies with both L1 and L2 routers.<br><br>Part of the challenge of studying ISIS [http://media.goslingfan.com/read_blog/30173/cisco-ccnp-bsci-certification:-introduction-to-isis-terminology advertiser] is getting utilized to the differences between ISIS and OSPF. Maintain studying the terminology, master a single notion at a time, and soon you are going to be a master of ISIS and a CCNP to boot! |
Version vom 11. August 2012, 03:10 Uhr
When you're studying to pass the BSCI exam and earn your CCNP certification, you are going to be introduced to ISIS. ISIS and OSPF are both link-state protocols, but ISIS functions really differently from OSPF. You need to master these specifics in order to earn your CCNP.
One of the key differences amongst OSPF and ISIS will be evident to you when you first begin your BSCI exam studies, and that is the terminology. ISIS makes use of terms that no other protocol you have studied to date uses, and understanding these new terms is the initial step to BSCI and CCNP exam good results.
Initial off, what does "IS" stand for in "ISIS"? It stands for "Intermediate Program", which sounds like a group of routers. As opposed to Autonomous Systems, which are logical groups enagic of routers, an Intermediate System is just a single router. That's it.
You are going to also turn out to be familiar with Finish Systems, referred to in ISIS as an "ES". The Finish Method is merely an end host.
ISIS and OSPF both use the idea of areas, but ISIS requires a distinct method to this notion. ISIS routers use three diverse types of routing levels, according to the region a router has been placed in. Level two routers are connected only to the backbone and serve as a transit device among find out more non-backbone areas. Level 1 routers are entirely internal to a non-backbone area.
ISIS utilizes both Level-1 and Level-2 Hellos, meaning that the two types of routers just mentioned can not type an adjacency. Luckily for us, there is a middle ground, and that is the Level 1-2 router. These routers connect non-backbone regions to backbone locations. L1-L2 routers maintain two separate routing tables, a single for L1 routing and another for L2 routing. This is the default setting for a Cisco router, and L1-L2 routers can type adjacencies with both L1 and L2 routers.
Part of the challenge of studying ISIS advertiser is getting utilized to the differences between ISIS and OSPF. Maintain studying the terminology, master a single notion at a time, and soon you are going to be a master of ISIS and a CCNP to boot!
