Cisco CCNA - CCNP Certification Exam Review: Protocol Basics

To acquire your Cisco CCNA appraisal and pass the BSCI CCNP exam, you have to understand your protocol basics like the back of your hand! To assist you reiterate these important notions, here's a quick look by the basics of RIPv1, RIPv2, IGRP, and EIGRP.

RIPv1: Broadcasts updates every 30 seconds apt the address 255.255.255.255. RIPv1 is a classful protocol, and it does not acknowledge VLSM, neither does it carry subnet disguising information in its routing updates. Update contains entire RIP routing chart. Uses Bellman-Ford algorithm. Allows equal-cost load-balancing at default. Max hop calculate is 15. Does not support clear-text alternatively MD5 authentication of routing updates. Updates carry 25 routes maximum.

RIPv2: Multicasts updates every 30 seconds to the address 224.0.0.9. RIPv2 is a classless protocol, allowing the use of subnet masks. Update contains entire RIP routing table. Uses Bellman-Ford algorithm. Allows equal-cost load-balancing by default. Max hop count is 15. Supports clear-text and MD5 authentication of routing updates. Updates carry 25 routes maximum.

IGRP: Broadcasts updates every 90 seconds to the address 255.255.255.255. IGRP is a Cisco-proprietary protocol, and is likewise a classful protocol and does not recognize subnet masking. Update contains entire routing table. Uses Bellman-Ford algorithm. Equal-cost load-balancing on by default; unequal-cost load-sharing tin be accustomed with the variance command. Max hop count is 100.

EIGRP: Multicasts full routing table merely while one adjacency is first formed. Multicasts updates only when there is a alteration in the network topology, and then only advertises the change. Multicasts to 224.0.0.10 and allows the use of subnet masks. Uses DUAL routing algorithm. Unequal-cost load-sharing obtainable with the variance directive.

By mastering the basics of these protocols, you're laying the basis because success in the exam room and when working on production networks. Pay care to the details and the payoff is "CCNA" and "CCNP" behind your label!