Cisco CCNP Certification / BSCI Exam Tutorial: Evaluating IRDP And HSRP
To move the BSCI Examination, you have to know the distinction between IRDP and HSRP. While they have the identical primary purpose, the Procedure and configuration of each and every are entirely unique.
The purpose of both 토토사이트 of those is to permit hosts to swiftly find a standby router when the principal router fails. IRDP is often employed by Home windows DHCP clientele and several other Unix variations, but you do see it in Cisco routers in addition. IRDP is defined in RFC 1256.
IRDP routers will multicast Hi messages that host units listen to. If a host hears from multiple IRDP router, it is going to choose one as its primary and may start off using the other router if the key it’s selected goes down.
HSRP is often https://www.washingtonpost.com/newssearch/?query=먹튀검증 a Cisco-proprietary protocol that may be created for brief cutover into a secondary router if the primary fails, but the host units don’t “see” either the principal or secondary router. The hosts utilize a virtual router as their default gateway. This Digital router has its have IP and MAC tackle! All the even though, the router preferred as the primary is actually the 1 doing the routing. If the main router goes down, the secondary router speedily will take above with no big interruption to community services.
The HSRP routers converse by multicasting updates to 224.0.0.2, and its by these hellos that the HSRP routers decide which router is Most important and and that is secondary. HSRP is defined in RFC 2281.
The configuration of every of these are going to be protected in the upcoming tutorial. Meanwhile, I urge you to study the RFCs stated in the following paragraphs, and stop by www.cisco.com/univercd to read about the configurations and selections readily available for equally of such crucial protocols.