Cisco CCNP Certification / BSCI Exam Tutorial: Evaluating IRDP And HSRP
To move the BSCI exam, you have to know the difference between IRDP and HSRP. When they may have a similar basic perform, the operation and configuration of each and every are completely unique.
The aim of both of those is to permit 토토사이트 hosts to speedily explore a standby router when the primary router fails. IRDP is commonly employed by Windows DHCP customers and several Unix versions, but you do see it in Cisco routers as well. IRDP is defined in RFC 1256.
IRDP routers will multicast Good day messages that host gadgets hear. If a host hears from more than one IRDP router, it will pick one as its Key and may start off using the other router if the main it’s decided on http://www.bbc.co.uk/search?q=먹튀검증 goes down.
HSRP is really a Cisco-proprietary protocol that's designed for swift cutover to the secondary router if the principal fails, although the host gadgets don’t “see” either the principal or secondary router. The hosts make use of a virtual router as their default gateway. This Digital router has its own IP and MAC address! The many even though, the router picked out as the key is in fact the just one doing the routing. If the primary router goes down, the secondary router swiftly will take over without big interruption to network services.
The HSRP routers communicate by multicasting updates to 224.0.0.2, and its by these hellos which the HSRP routers pick which router is Main and which happens to be secondary. HSRP is outlined in RFC 2281.
The configuration of every of those will likely be protected inside of a long run tutorial. Meanwhile, I urge you to study the RFCs mentioned in this post, and stop by www.cisco.com/univercd to read about the configurations and possibilities accessible for both equally of such vital protocols.