Cisco Packet Tracer 8.x tutorials

Packet Tracer 8.1.1 - IP telephony advanced configuration

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Last Updated: Tuesday, 22 February 2022 07:31

Published: Sunday, 19 September 2010 12:12

Written by PacketTracerNetwork

Tutorial description

This tutorial will guide you for advanced voip configuration in Cisco Packet Tracer 8.1.1 network simulation software.  Based on the Cisco's Hierarchical Network Design Model, this simulated network has voip call routing features enabled between two campus buildings with network services (DNS, DHCP ...) centralized in the datacenter.

In a real world environment, the CUCME router would also be located in the datacenter. However, Packet Tracer doesn't seems to support this configuration as IP phones don't register and receive a valid phone number.

Network diagram

Download lab (Packet Tracer >= 6.2)

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Packet Tracer 8.1.1 - IP telephony devices

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Last Updated: Tuesday, 22 February 2022 07:31

Published: Saturday, 25 September 2010 12:04

Written by PacketTracerNetwork

Supported devices in Packet Tracer 8.1.1

Cisco Packet Tracer 8.1.1 supports three telephony devices :

• Cisco 7960 IP Phone
• Home VOIP device for analog phone connection to an IP network.
• Cisco IP Communicator software on desktop or laptop PC

Cisco 7960 IP Phone

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Packet Tracer 8.0 - Netflow configuration

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Last Updated: Thursday, 08 April 2021 06:12

Published: Tuesday, 16 July 2013 16:10

Written by PacketTracerNetwork

What is Netflow?

Netflow is a network analysis protocol that was initially created by Cisco to give the ability to collect detailled informations about network traffic as it flows through a router interface.

The data processed by Netflow collectors provides the network administrator with detailled traffic informations such as the source and destination of the traffic, class of service, .... Netflow version 9 was standardized in 2008 as IPFIX by the IETF organization. This feature is used by network operators for billing network users.

NetFlow records are exported to a Netflow collector using User Datagram Protocol (UDP). The IP address and the destination UDP port of the NetFlow collector have to be configured on the sending device (router or l3 switch). The standard value is UDP port 2055, but other values like 9555 or 9995 can also be used.

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Packet Tracer 8.0 - Setting up and managing a DHCP server

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Last Updated: Thursday, 08 April 2021 06:10

Published: Wednesday, 01 September 2010 20:30

Written by PacketTracerNetwork

Introduction

DHCP service is a key component of your network infrastructure by allowing centralized ip address management on a single pool of servers. DHCP configuration is also part of CCNA and CCNP Enterprise certification curricula. This skill can be tested in lab environnement during exams ans it's important for students to get used to DHCP configuration before taking the exam.

Packet Tracer 8.0 implements two methods for setting up a DHCP server in your network :

• Configuration of DHCP pools on Cisco routers or multlayer switches.
• Configuration of a standalone DHCP server appliance on the network and usage of the "ip helper-address" command on network devices for DHCP traffic forwarding outside each local broadcast domain. This tutorial will describe this method for implementing DHCP service in your network.

DHCP server and DHCP client sould be in the same vlan to be able to communicate as the initial DHCP discover is a layer 2 broadcast packet to ff:ff:ff:ff:ff:ff MAC address. Cisco routers and layer 3 switches are able to act as DHCP relay and forward DHCP requests to a DHCP server located in another VLAN : a single DHCP server can now be deployed to deliver IP addresses to many subnet.

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