Cisco CCNP Certification / BSCI Exam Tutorial: Evaluating IRDP And HSRP
To go the BSCI exam, you need to know the difference between IRDP and HSRP. Whilst they have the same fundamental purpose, the operation and configuration of every are fully 토토사이트 distinct.
The intention of both equally is to permit hosts to immediately find out a standby router when the main router fails. IRDP is often utilized by Windows DHCP consumers and several https://en.wikipedia.org/wiki/?search=먹튀검증 other Unix variants, however you do see it in Cisco routers likewise. IRDP is described in RFC 1256.
IRDP routers will multicast Hello messages that host devices listen to. If a bunch hears from more than one IRDP router, it will eventually choose one as its Key and will get started using the other router if the primary it’s preferred goes down.
HSRP is a Cisco-proprietary protocol which is made for fast cutover to a secondary router if the principal fails, however the host gadgets don’t “see” both the main or secondary router. The hosts use a Digital router as their default gateway. This Digital router has its possess IP and MAC deal with! Every one of the although, the router picked as the key is really the one doing the routing. If the principal router goes down, the secondary router promptly normally takes in excess of without any significant interruption to network companies.
The HSRP routers connect by multicasting updates to 224.0.0.2, and its via these hellos which the HSRP routers decide which router is primary and which is secondary. HSRP is outlined in RFC 2281.
The configuration of each and every of such is going to be lined in the long run tutorial. Meanwhile, I urge you to go through the RFCs pointed out on this page, and visit www.cisco.com/univercd to examine the configurations and possibilities obtainable for both equally of those vital protocols.