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Hot standby router protocol, also known as HSRP, is a system designed by Cisco. This protocol allows a router to go down while allowing the system to have an acceptable failover rate. Having a cluster of routers go down will be less of a problem with HSRP if everything is configured correctly. Read on as we explore this major Cisco certification update here in this short article.
The HSRP protocol seamlessly allows the automatic capability to switch to a backup. With a solution that switches to backup routers, HSRP can be seen as a big plus for network stability. HSRP uses a virtual IP, also called a VIP, to prevent access to the physical IP address. Configurations in this protocol should be checked for the correct setup.
Cisco’s CCNA routing & switching certification gets a major update with HSRP. Indeni has a signature that helps take advantage of this major update. The Cisco HSRP protocol and this signature both work together. The result is an automatic verification that all monitored devices will switch to using Virtual IP in the case of a router failure. The signature and the check is necessary to preclude access to a physical IP address. This is a major change and sets the router network to a more automatic state, providing a solution for less work yet more stability.
Routers in an HSRP group should have associated and well-known virtual MAC addresses. Preventing network failure using these virtual MAC addresses is one part of the goal. As concerning bridge environments, there must be an ability to update rapidly. The virtual MAC address “moves” under the HSRP protocol, making speed an issue. Cisco recommends that only true learning bridges be used with their protocol. Faster ones will be more desirable than slower ones.
Learning and implementing this update creates a network with more resiliency. Imagine yourself having a network without the protocols mentioned here. The probability of downtime becomes higher. The probability of losing valuable data goes higher. For more peace of mind, go over all devices. Go into detail with your network and see which are using a physical IP or a virtual IP. There is a site online that can be used as a database for advancing your knowledge on the HSRP and other Cisco protocols. The Cisco company uses a “Request for Comments”, also known as RFC, to ensure the world knows more about network regulations. The correct HSRP document is posted online and given the name RFC 2281. Find more information online.
The goal of the HSRP update is to allow hosts to appear to use a single router and to maintain uptime, even if the first hop router should fail. The entire system of routers under this system work together to successfully carry out this goal. This is great news for businesses!