200-301 udemy

200-301 udemy.This process, shown in Figures 6-8 and 6-9, will balance the traffic on each host. but the router must be ready to take over for another router if it fails. the GLBP treats each router as a forwarder. When all routers are working properly, they only act as forwarders for their own virtual MAC addresses, but it listens for GLBP messages to ensure that all other forwarders are working properly. If one of the forwarders fails, the forwarders that are still working properly take over the role of the failed forwarder's virtual MAC address and continue forwarding traffic.6.2.2FHRP Configuration and VerificationThe second major section of this chapter will cover the configuration of the basic HSRP and GLBP features, and the matching show commands. The goal of this section is to provide enough operation for each modality to again reinforce the concepts discussed in the first part.Configuring and verifying HSRPHSRP configuration requires only one command to be configured on two (or more) routers that need to use HSRP to share the responsibilities of the default router: the standby group ip virtual-ip interface subcommand. The first value defines the HSRP group number, which must match both routers. This group number allows a router to support multiple HSRP groups at once, and it also allows routers to recognize each other by group. This command also configures the virtual IP address shared by the routers in the same group.135 Chapter 6 Creating Redundant First-Hop RoutersExample 6-1 gives an example configuration that matches the HSRP examples in Figure 6-5 and 6-6. Both routers use group I, virtual IP address 10.1.1.1, and both are configured using the standby 1 ip 10.1.1.1 interface subcommand.Example 6-1 HSRP on R1 and R2 of shared IP address 10.1.1.1Rl# show running-config ! Lines omitted for brevity interfaceGigabitEthemetO/Oip address 10.1.1.9255.255.255.0 standby version 2 standby 1 ip lO.l.i.l standby 1 priority 110 standby 1 name HSRP-group-for-book