CCNA 4 Lab 2.5.3Investigating Network Monitoring Software

Step 1: SNMP overview

Simple Network Management Protocol is a common network management protocol. The protocol enables network administrators to gather data about the network and corresponding devices. SNMP management system software is available in tools such as CiscoWorks. SNMP management agent software is often embedded in operating systems on servers, routers, and switches. SNMP has four main components:

• • Management station
• • Management agents
• • Management Information Base (MIB)
• • Network management protocol

Descriptions of SNMP are available at:

http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/snmp.htm

http://www.protocols.com/pbook/tcpip9.htm#SNMP

As part of a network management system, SNMP tools can respond to network errors or failures in several ways. Generally, when a network fault occurs, or when predefined thresholds are met; the SNMP tools can react by:

• • Sending an alert on the network
• • Sending a message to a pager
• • Sending an email to an administrator

The FilmCompany is required to maintain a specified level of network service to meet its StadiumCompany contract obligations. They need to purchase network management software that enables them to monitor and manage the new upgraded network.

Step 2: Search for SNMP monitoring programs

1. Using a computer with Internet access, use a web browser to search for examples of SNMP monitoring programs. Use search terms such as:

• SNMP reporting
• SNMP notification
• SNMP monitoring

1. List other appropriate search term
2. Note and compare the features of a number of the monitoring programs found.

Step 3: Example SNMP program

An example SNMP monitoring program is Plixer Denika v7.

1. Go to the website for this program at http://www.plixer.com/products/denika.php.
2. List the type of reports that this program can generate.
3. Read the details for each type of report. Select the report type that would be most applicable to ensure a problem with the performance of the link carrying real time video data from the StadiumCompany to FilmCompany was addressed as soon as possible.

Step 4: Reflection

Consider and discuss the organizational or business support necessary to make best use of network monitoring programs with event-triggered notification features.

Jawaban:

The event thresholds and conditions that trigger notifications must be set so that unnecessary notifications are not sent, but critical conditions are reported and notification is sent.

Company employees who are notified must be both technically capable of resolving the issue and available to do so when notified. This will require the company to ensure that staff is trained in the response processes, in the technical skills, and in troubleshooting and problem solving. Employee rosters and task allocation need to consider these issues.

CCNA 4 Lab 3.1.2 Creating a Logical Network Diagram

Task 1: Use Cisco IOS Commands to Obtain Information about the Network

Step 1: Discover and document the first device

NOTE: If the PCs used in this lab are also connected to your Academy LAN or to the Internet, ensure that you record the cable connections and TCP/IP settings so that these can be restored at the conclusion of the lab.

1. Your instructor will advise you as to which PC is configured for Administrator access to the network. Access this Admin PC and issue the ipconfig command from the command prompt to discover the default gateway.
2. Telnet from the command prompt (or use a terminal program such as HyperTerminal or TeraTerm) to the IP address of the gateway device and enter privileged EXEC mode using the passwords given above.
3. Issue Cisco IOS commands, such as those shown here as well as others you choose to use, to learn about the device.
4. Issue Cisco IOS commands such as those shown here to discover information about connected devices.
5. Close the Telnet session by issuing the exit command.

Step 2: Discover the remaining devices

1. Telnet to the IP address of a device connected to the first device interrogated, and repeat the process in Step 1. Document this new device in an appropriate Device Table.
2. Repeat this process until all devices in the network are discovered and documented. As you work through the network devices, record the details of each and sketch a diagram of the network devices and their interconnections.

When IP address information has been recorded, what other commands could be used to confirm

connectivity and trace interconnections between devices?

________________________________________________ ping

________________________________________________ tracert and traceroute

Can a connectivity trace be relied upon to return details of all the pathways between devices? Give reasons for your response.

Jawaban: No, all pathways will not be returned because routing at Layer 3 and STP at Layer 2 will cause only one pathway between devices to be shown if redundant or alternate connections exist.

Task 2: Use Cisco Network Assistant to Obtain Information about the Network

Step 1: Launch Cisco Network Assistant

1. Launch the Cisco Network Assistant program on the PC connected to the network.
2. Network devices can be accessed for monitoring and information gathering. From theApplications menu, click Connect.
3. In the Connect dialog box, select the Connect To: option and enter the default gateway of the Admin PC in the field, as shown.

Step 2: Record the network topology

1. Record the displayed topology. The display will look similar to this sample.
2. Continue to connect to each known device. Record the topology displayed and compare it with the diagram that you created from the results of Task 1.

Step 3: Collate the network information

Assemble your completed network Device Tables and Topology Diagrams into your FilmCompany case study portfolio for use in later labs.

Step 4: Clean up

Erase the configurations and reload the routers and switches. Disconnect and store the cabling. For PC hosts that are normally connected to other networks (such as the school LAN or to the Internet), reconnect the appropriate cabling and restore the TCP/IP settings.

Task 3: Reflection

1. These techniques were used to discover and document an enterprise LAN. Would the same techniques work for an enterprise network that included WAN links?
2. Could these techniques be used in a network that included routers and switches from a manufacturer other than Cisco? Why or why not? Jawaban: Cisco Network Assistant only supports devices listed in the FAQ of the program. Other types of software can be used for multi-brand networks.

CCNA 4 Lab 3.2.2 Using Show Version to Createan Inventory List

Task 1: Determine the Capabilities of the IOS of a Cisco 1841 ISR

Step 1: Inspect the installed IOS

NOTE: If the PC used in this lab is also connected to your Academy LAN or to the Internet, ensure that you record the cable connections and TCP/IP settings so that these can be restored at the conclusion of the lab.

1. Referring to Topology 1, connect the console (or rollover) cable to the console port on the router and the other cable end to the host computer with a DB-9 or DB-25 adapter to the COM 1 port. Ensure that power has been applied to both the host computer and router.
2. Establish a HyperTerminal or other terminal emulation program connection to the router.
3. From the privileged EXEC mode prompt of the terminal, issue the show version command. Record the following details:

Results will vary; examples shown.

IOS version ______________________________ Version 12.4(1c)

Name of the system image (IOS) file ___________________________ 1841-ipbase-mz.124-1c.bin

IOS Feature Set ___________________________ IP BASE

Date of code build __________________________ Compiled Tue 25-Oct-05

Where the router IOS image booted from ____________________________________ ROM: System

Bootstrap, Version 12.4(13r)T

Type of processor board ________________________________ Processor board ID FTX1118X09K

Amount of DRAM __________________________ 128 MB

Number of Ethernet interfaces _____________________ 2

Number of serial interfaces _______________________ 2

Amount of NVRAM _____________________________ 191K bytes of NVRAM

Amount of flash memory ________________________ 31360K bytes of ATA CompactFlash

Configuration register ___________________________ 0×2102

1. Issue the show flash command. Record the following details:

Results will vary; examples shown.

The amount of flash memory available and used _______________________________________

126976 bytes available (31805440 bytes used)

The size of the IOS file _____________________________ 13937472 bytes

1. Issue the show running-configuration command. Record features that indicate what the router is capable of. Jawaban: Results will vary; examples include ip subnet-zero, ip cef, ip classless

Step 2: Examine the IOS feature set on Cisco.com (1)

1. Go to the website http://www.cisco.com.
2. Remember that the Cisco main website changes frequently. The steps listed here representative of the procedure for accessing the resources. If the options do not appear as listed, please check with your instructor or use the cisco.com search functions to find the IOS Software Selector.
3. Roll over the Support tab and select Support.
4. On the Support page, under Frequently Used Resources, click Tools & Resources.
5. At the bottom of the Tools & Resources page, click the Show All Tools button to display tools by category.
6. Scroll to the Software section.
7. Click Cisco IOS Software Selector.