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CCNA2 Verson6 Chapter10
1.
© 2008 Cisco
Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 1 Instructor Materials Chapter 10: Device Discovery, Management, and Maintenance CCNA Routing and Switching Routing and Switching Essentials v6.0
2.
© 2008 Cisco
Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 13 Chapter 10: Device Discovery, Management, and Maintenance Routing and Switching Essentials v6.0
3.
Presentation_ID 14© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Chapter 10 - Sections & Objectives 10.1 Device Discovery • Use discovery protocols to map a network topology. 10.2 Device Management • Configure NTP and Syslog in a small to medium-sized business network 10.3 Device Maintenance • Maintain router and switch configuration and IOS files.
4.
© 2008 Cisco
Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 15 10.1 Device Discovery
5.
Presentation_ID 16© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Discovery Device Discovery with CDP CDP Overview • Cisco Discovery Protocol • Neighbor discovery of physically connected Cisco devices Configure and Verify CDP • show cdp neighbors • show cdp interface • cdp run • cdp enable Discover Devices Using CDP • Device identifiers - The host name of the neighbor device • Port identifier - The name of the local and remote port • Capabilities list - Whether the device is a router or a switch • Platform - The hardware platform of the device
6.
Presentation_ID 17© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Discovery Device Discovery with LLDP LLDP Overview • A vendor neutral layer 2 neighbor discovery protocol, similar to CDP Configure and Verify LLDP • show lldp • lldp run • lldp transmit • lldp receive Discover Devices Using LLDP • show lldp neighbors
7.
© 2008 Cisco
Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 18 10.2 Device Management
8.
Presentation_ID 19© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Management Implement NTP Setting the System Clock • Manually configure the date and time • Configure Network Time Protocol (NTP) NTP Operation • Hierarchical system of time sources • Stratum 0 – Authoritative time source • Stratum number indicates how far the server is from the time source Configure and Verify NTP • ntp server ip-address • show ntp associations • show ntp status • show clock
9.
Presentation_ID 20© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Management Syslog Operation Introduction to Syslog • Allows devices to send their messages to syslog server • Supported by most networking devices • Primary functions: o log information o select the type o specify the destinations Syslog Message Format • Severity level from 0 – 7 • Facility – service identifiers Service Timestamp • Enhances real-time debugging and management • service timestamps log datetime
10.
Presentation_ID 21© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Management Syslog Configuration Syslog Server • Parses the output and places the messages into pre-defined columns • Timestamps are displayed if configured on networking devices that generated the log messages • Allows the network administrators to navigate the large amount of data compiled on a syslog server. Default Logging • Send log messages of all severity level to the console • show logging Router and Switch Commands for Syslog Clients • logging ip-address • logging trap level • logging source-interface source-interface interface-number Verifying Syslog • show logging • Use the pipe (|) to limit the amount of displayed log messages
11.
© 2008 Cisco
Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 22 10.3 Device Maintenance
12.
Presentation_ID 23© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Maintenance Router and Switch File Maintenance Router and Switch File Systems • show file systems – lists all available file system • dir – lists the content of the file system • pwd - verify the present working directory • cd – changes the current directory Backing up and Restoring using Text Files
13.
Presentation_ID 24© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Maintenance Router and Switch File Maintenance (Cont.) Backing up and Restoring using TFTP • copy running-config tftp • copy startup-config tftp Using USB Ports for Backing Up and Restoring • show file systems • dir usbflash0: • copy run usbflash0:/ Password Recovery • Enter ROMMON mode • Change configuration register to 0x2142 • Make changes to the original startup config • Save the new configuration
14.
Presentation_ID 25© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Maintenance IOS System Files IOS 15 System Image Packaging • universalk9 images • universalk9_npe images • Technology packages: IP Base, Data, UC, SEC • Data, UC, and SEC technology packages are activated through licensing IOS Image Filenames • Feature sets and version • show flash
15.
Presentation_ID 26© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Maintenance IOS Image Management TFTP Servers as a Backup Location • Backup location for IOS images and configuration files Steps to Backup IOS Image to TFTP Server • Verify access to TFTP server • Verify sufficient disk space • Copy the image to the TFTP server o copy source-url tftp: Steps to Copy an IOS Image to a Device • Download IOS image from Cisco.com and transfer it to TFTP server • Verify access to TFTP server from device • Verify sufficient disk space on device • Copy the image from the TFTP server o copy tftp: destination-url The boot system Command • Command to load the new image during bootup • boot system file-url
16.
Presentation_ID 27© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Maintenance Software Licensing Licensing Process • Purchase the software package or feature to install • Obtain a license o Cisco License Manger o Cisco License Portal o Requires PAK number and UDI show license udi • Install the license o license install stored- location-url o reload
17.
Presentation_ID 28© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Device Maintenance License Verification and Management License verification • show version • show license Activate an evaluation right-to-use license • license accept end user agreement • license boot module module-name technology-package package- name Back up the license • license save file-sys://lic-location Uninstall the license • Disable the license o license boot module module-name technology-package package- name disable • Clear the license o license clear feature-name o no license boot module module-name technology-package package-name disable
18.
© 2008 Cisco
Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 29 10.4 Chapter Summary
19.
Presentation_ID 30© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential Chapter Summary Summary CDP is a Cisco proprietary protocol for network discovery on the data link layer. It can share information, such as device names and IOS versions, with other physically connected Cisco devices. LLDP is vendor-neutral protocol used on the data link layer for network discovery. The network devices advertise information, such as their identities and capabilities, to their neighbors. NTP synchronizes the time of day among a set of distributed time servers and clients. This allows networking devices to agree on the time a specific event occurred, such as the loss of connectivity between a router and a switch. Syslog messages can be trapped and sent to a syslog server where the network administrator can investigate when the link failed. Device maintenance includes the tasks of backing up, restoring, and upgrading IOS images and configuration files from an TFTP server or using USB storage devices. Upgrading an IOS image also includes tasks related to software licensing. Understanding IOS image name conventions can be useful in the determination of included IOS feature sets.
20.
Presentation_ID 31© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential
21.
Presentation_ID 32© 2008
Cisco Systems, Inc. All rights reserved. Cisco Confidential
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