Cisco CCNP Certification / BSCI Test Tutorial: Comparing IRDP And HSRP
To go the BSCI Test, you have to know the difference between IRDP and HSRP. Whilst they've got the identical standard function, the operation and configuration of each and every are absolutely unique.
The goal of both is to permit hosts to speedily find a standby router when the primary router fails. IRDP is often used by Windows DHCP purchasers and several other Unix variations, however, you do see it in Cisco routers as https://www.totopass.net/ well. 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 Key and may start out using the other router if the principal it’s chosen goes down.
HSRP is actually a Cisco-proprietary protocol that may be designed for brief cutover to some secondary router if the first fails, however the host equipment don’t “see” either the primary or secondary router. The hosts use a Digital router as their default gateway. This virtual router has its own IP and MAC tackle! Many of the while, the router selected as the principal is really the 1 doing the routing. If the key router goes down, the secondary router swiftly normally takes around with no significant interruption to network solutions.
The HSRP routers connect by multicasting updates to 224.0.0.two, and its by these hellos the HSRP routers choose which router is Major and that's secondary. HSRP is defined in RFC 2281.
The configuration http://edition.cnn.com/search/?text=먹튀검증 of each and every of such might be covered inside a potential tutorial. Meanwhile, I urge you to go through the RFCs described in this post, and take a look at www.cisco.com/univercd to examine the configurations and alternatives accessible for both of such essential protocols.