cisco 400-101 v5.1 dumps

cisco 400-101 v5.1 dumps.. Listening state.. Speaking status. . Standby status. . Active state.After the routing device is enabled, it is first in the initial state. Note that in the initial state, the HSRP process has not yet started, only the routing device and its interfaces are activated. In the learning state, the routing device listens to the active routing device. At first, the routing device has no knowledge of other HSRP routers. In this state, the current active and standby routing devices and the virtual IP address of the HSRP group are discovered.The routing device learns of the virtual IP address when it receives a multicast message from the active/alternate routing device. This is referred to as the listening state. In this state, the routing device is neither the active routing device nor the standby routing device. If there are already standby and active routing devices, the listening routing device will remain in this state and will no longer enter the next three states. An exception is configured preemption; in this case, the higher priority routing device will usurp the existing active or standby routing device.Upon entering the speaking state, the routing device will propagate multicast messages to participate in standby or active routing device elections. These Hello messages are sent periodically to let the other devices in the group know of their presence. Note that a routing device enters this state only when a virtual IP address is configured.Such a routing device will become either a standby or an active routing device, depending on its priority. In the standby state, the routing device will become the active routing device in the event of a failure of the active routing device. In the active state, the routing device is responsible for forwarding all traffic sent to the virtual MAC address in the broadcast domain. There can be only one active routing device and one standby routing device, and both routing devices periodically send Hello messages to the other routing devices in the group to ensure that even if they fail, there is a default gateway for forwarding traffic to the endpoint.It is important to note that if you do not configure preemption, the routing device that starts first will become the active routing device and the routing device that starts next will become the standby routing device. Therefore, to balance the load among routing devices by having some routing devices handle traffic for certain VLANs and having other routing devices handle traffic for other VLANs, you need to configure preemption so that when the failed routing device recovers, it assumes its previous role.Chapter 18 Basic Routing 481Configuring HSRP HSRP is simple to configure. The next few subsections discuss the configuration of HSRP and how it can be optimized in large networks.Basic Configuration