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Home/ Questions/Q 3222
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Vipin Chauhan
Vipin ChauhanLevel 30
Asked: September 16, 20212021-09-16T13:48:34+05:30 2021-09-16T13:48:34+05:30

A Router Boots And Enters Setup Mode. What Is The Reason For This?

A Router Boots And Enters Setup Mode. What Is The Reason For This?
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    1. Maryam Khalid Bronze
      2021-10-31T14:06:13+05:30Added an answer on October 31, 2021 at 2:06 pm

      A router boots and enters setup mode. What is the reason for this?

      • The image of the IOS is damaged.
      • From the flash memory, the Cisco IOS is missing.
      • The configuration file is missing from NVRAM.
      • The hardware failure is detected by the POST process.

      Answer: If the startup-config file is missing and the router cannot detect it then it enters the startup mode and boots and permits the configuration to enter from the console device.

      What is a router?

      A hardware type that is built to transmit, receive and analyze the data packet from the other network. Another function of the router is to transform the packets to the interface of the other network, drop it and do the work of the other network. The router shows the direction to the data packet which are sent to the destination network over the internet.

      The router can connect the data with a different IP address such as the data come and the router read the address of the destination network in the header of the packet to and send the data packet towards it. The common type of the router are the ones for home and the office which transfer the data from the home computer and the internet

      Functions of the router

      The router is more capable of doing functions related to the other hardware devices i.e., Hub and the Switch which also perform functions of the network. The hub works is to transmit the data and has nothing to do with the analysis of the data, But the router not only sends the data but also checks its package either it is safe or not changes it, and then transfers it to the destinated network.

      A software run the router and it has two operations in the process which is listed below:

      Control Plane:

      A routing table has the information of the routes which are taken by the data packets and which physical interface. The process happens by the configuration of the static or the dynamic using different protocols. Both of the routes are in the table, the control plane uses the directive from the table developed the FIB which is further used by the forwarding plane.

      Forwarding plane:

      The data movement forward happens with the help of the forwarding table. The packet header analyzes by it then matches it with the destination entries which are provided by the FIB control plane and transfer the packet to the FIB specified network.

      Types of the router

      Some of the router types are discussed in the following:

      Wireless:

      The work of the wireless router is to provide the internet to phone, laptops with the help of wireless signals. An ethernet routing has also been provided by it. Sometimes the router act as the combo of the router and modem which transform the coming broadband signals. the range of the WIFI router is 150 feet and outside it is 300 feet.

      Brouter:

      The Brouter is known as the bridge router which is the combo of the bridge and the router in the data transmission.

      Core Routers:

      The works of the core network are to transmit the packet of data within the network and not to the other network which is outside.

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