One of the new features of the latest version of Cisco’s Packet Tracer version 6.0 is the addition of a HWIC-8 module along with an 8 port octal cable. These new feature allows the user to create a Terminal Server using a router and the HWIC-8. The HWIC-8 is an 8 port Async-serial interface card that can be connected to the console port of other routers and switches using the 8 connector octal cable, providing one router to control them all.
In this Free CCNA Lab we will demonstrate how to manage your lab routers and switches not only locally but remotely. This type of network management is referred to as In-Band and Out-Of-Band management, and we will learn to configure both of these technologies using Packet Tracer 6.0. We will also configure a DNS (Domain Naming Service) and RADIUS server to help us find and authenticate our network routers and switches.
In-Band Network Management:
In-Band network management is where you connect to and manage routers and switches across the LAN (Local Area Network) using SSH or Telnet to connect to routers and switches within your network as well as across a WAN (wide Area Network) to another connected LAN. This type of network management has an additional advantage in that you can use SNMP (Small Network Management Protocol) to monitor and manage the network as well. This type of management is used in most companies and works rather well. However in larger companies with multiple geographical locations this type of management by its self is not sufficient, therefore these campiness employ an additional network management known as Out-Of-Band network Management.
Out-OF-Band Network Management:
If there is a problem with a device such as a router, switch, firewall or even a server, and traffic cannot flow through the network, you need an alternate path to reach the network nodes even when the network is down. This type of management is known as OBM (Out-Of-Band Management) or lights out management and involves the use of a dedicated management channel for device maintenance. It allows a system administrator to monitor and manage network equipment by remote control. The use of a Terminal Server is one way to accomplish this type of network management. Rather than have an individual connection to each device we can have a remote connection to a single device that connects to all the other devices allowing the administrator or engineer access to each device. The user would use a dial up modem to connect to the Terminal Server the using SSH or Telnet connect to the individual device needing attention.
Terminal Server:
A terminal or comm server commonly provides out-of-band access for multiple devices. A terminal server is a router with multiple, low speed, asynchronous ports that are connected to other serial devices, for example, modems or console ports on routers or switches.
The terminal server allows you to use a single point to access the console ports of many devices. A terminal server eliminates the need to configure backup scenarios like modems on auxiliary ports for every device. You can also configure a single modem on the auxiliary port of the terminal server, to provide dial-up service to the other devices when network connectivity fails.
Learning Objectives:
Understand and configure In-Band network management.
- Understand and configure Out-Of –Band network Management.
- Configure remote In-Band management through VPN
- Understand and Configure a Terminal Server.
- Configure remote Out-Of-Band management through PSTN.
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Network Management (211.2 KiB, 5,581 hits) Packet Tracer 6.0.1 (53.3 MiB, 1,068 hits)
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