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ICND1 2.0: VLANs and DHCP

When you understand how a switch and router operate, how they communicate, and how to configure basic security, you can move on to understanding an expanded network. VLANs contribute to network performance by separating large broadcast domains into smaller segments. A VLAN allows a network administrator to create logical groups of network devices. These devices act as if they were in their own independent network, even though they share a common infrastructure with other VLANs. This course explains how to implement and verify VLANs and trunking. Routing is the process of determining where to send data packets that are destined for addresses outside of the local network. Routers gather and maintain routing information to enable the transmission and receipt of data packets. For traffic to cross from one VLAN to another, a Layer 3 process is necessary. This course describes the basics of inter-VLAN routing operations, including subinterfaces and router on a stick. Originally, network administrators had to manually configure the host address, default gateway, and other network parameters on each host. However, DHCP provides these parameters dynamically. This lesson describes the use of a Cisco router as a DHCP server, which decreases the administrative burden of assigning IP addresses by using DHCP.

Target Audience
Interconnecting Cisco Network Devices Part 1 is essential for students preparing for the CCNA Routing and Switching or CCENT certifications. Students pursuing the CCNA Routing and Switching certification should complete parts 1 & 2 of the ICND learning path. Students pursuing the CCENT certification need only attend part 1 of the ICND curriculum. Anyone wishing to obtain Cisco Certified Network Associate (CCNA) 100-101 certification that validates the knowledge and skills required to successfully install, operate, and troubleshoot small to medium size enterprise branch network. Network administrators, network engineers, network managers, network designers, and project managers. Familiarity of navigating PC operating systems, the Internet, and basic IP addressing knowledge skills recommended.

Expected Duration (hours)

Lesson Objectives

ICND1 2.0: VLANs and DHCP

  • describe the purpose and functions of VLANs
  • identify the feature that's required for multiple VLANs to span multiple switches
  • describe how VLANs and trunking work with IEEE 802.1Q
  • implement and verify VLANs
  • identify the IEEE 802.1Q trunking combinations that facilitate communication
  • describe VLAN design considerations
  • assign a subinterface to a VLAN using 802.1Q trunking
  • configure and verify VLANS and inter-VLAN routing
  • sequence the steps in DHCP operation
  • configure a Cisco IOS device as a DHCP server
  • identify the mode to enter to enable the DHCP relay agent mechanism
  • configure a Cisco IOS device as a DHCP server in a given scenario
  • Trajanje: 
    2,5 h

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