Cisco CCNP Certification / BSCI Test Tutorial: Comparing IRDP And HSRP
To pass the BSCI Examination, you need to know the difference between IRDP and HSRP. Though they've got a similar essential operate, the Procedure and configuration of each and every are absolutely unique.
The intention of both equally is to permit hosts to quickly find out a standby router when the key router fails. IRDP is usually utilized by Home windows DHCP clientele and a number of other Unix variations, however, you do see it in Cisco routers also. IRDP is described in RFC 1256.
IRDP routers will multicast Good day messages that host equipment listen to. If a number hears from more than one IRDP router, it's going to pick one as its Principal and will start out utilizing the other router if the first it’s selected goes down.
HSRP is usually a Cisco-proprietary protocol which is created for brief cutover into a secondary router if the main fails, although the host devices don’t “see” both the main or secondary router. The hosts utilize a virtual router as their default gateway. This virtual router has its have IP and MAC tackle! All the when, the router chosen as the main is actually the a person accomplishing the routing. If the principal router goes down, the secondary router immediately will take above without any important interruption to network companies.
The HSRP routers talk by multicasting updates to 224.0.0.2, and its as a result of these hellos 먹튀검증 the HSRP routers choose which router is primary and and that is secondary. HSRP is outlined in RFC 2281.
The configuration http://edition.cnn.com/search/?text=먹튀검증 of every of these is going to be protected within a foreseeable future tutorial. Meanwhile, I urge you to browse the RFCs pointed out on this page, and check out www.cisco.com/univercd to read about the configurations and possibilities readily available for equally of these critical protocols.