Cisco CCNP Certification / BSCI Exam Tutorial: Comparing IRDP And HSRP
To pass the BSCI Examination, you have to know the distinction between IRDP and HSRP. Although they have the identical basic perform, the operation and configuration of each and every are absolutely various.
The purpose of equally is to allow hosts to immediately explore a standby router when the first router fails. IRDP is usually utilized by Home windows DHCP shoppers and several Unix versions, however you do see it in Cisco routers likewise. IRDP is defined in RFC 1256.
IRDP routers will multicast Hello there messages that host products hear. If a number hears from multiple IRDP router, it'll pick one as its Principal and will start off using the other router if the key it’s decided on goes down.
HSRP is often a Cisco-proprietary protocol that may be suitable for brief cutover to a secondary router if the first fails, nevertheless the host gadgets don’t “see” possibly the principal or secondary router. The hosts use a virtual router as their default gateway. This virtual router has its have IP and MAC deal with! Every one of the although, the router picked out as the primary is really the one performing the routing. If the principal router goes down, the secondary router swiftly will take over with no main interruption to community providers.
The HSRP routers talk by multicasting updates to 224.0.0.two, and its through these hellos the HSRP routers pick which router is Most important and which is secondary. HSRP is defined in RFC 2281.
The configuration of every of http://www.bbc.co.uk/search?q=먹튀검증 those will probably be included in a future tutorial. Meanwhile, I urge you to study the RFCs talked about on this page, and stop by www.cisco.com/univercd to examine the configurations and possibilities available for 토토사이트 each of those essential protocols.