Network device management

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Network Device Management Lecture for the students of professordkinney.com

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  • 1. www.professordkinney.com 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group

2. 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 3. Lessons Summary: Configuring Network Devices Enterprise Network Security Managing Cisco Devices Some Bonus Cheat Sheets 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 4. Configuring Network Devices ISR (Integrated Services Router combines routing, LAN switching, security, voice, & WAN connectivity features. Ideal for small to medium-sized businesses & ISP managed customers. 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 5. Cisco IOS offered in modules called images IP Base image: entry-level Cisco IOS Images are specific to models of devices 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 6. CISCO IOS Image: Types of Images Two main types of image your router may use: System image - complete Cisco IOS software. This image is loaded when your router boots and is used most of the time. On most platforms, the image is located in Flash memory. Boot image - A subset of the Cisco IOS software. This image is used to perform network booting or to load Cisco IOS images onto the router. This image is also used if the router cannot find a valid system image. Depending on your platform, this image may be called xboot image, rxboot image, bootstrap image, or boot loader/helper image. On some platforms, the boot image is contained in ROM. In others, the boot image can be stored in Flash memory. On these platforms, you can specify which image should be used as the boot image using the boot bootldr global configuration command. Refer to your hardware documentation for information about the boot image used on your router. 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 7. Image Naming Convention You can identify the platform, features and image location by the image name. Naming convention is: platform features type Example: c2600-js-l_121-3.bin c2600 - hardware platform js - features set (enterprise) l - file format (relocatable, not compressed) 121-3 - version & release # (version 12.1 release 3) 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 8. Platform variable platform that can use image For example c1700, c2600, c7000 Features feature sets supported by image. Type can contain following characters fThe image runs from Flash memory. mThe image runs from RAM. rThe image runs from ROM. lThe image is relocatable. zThe image is zip compressed. xThe image is mzip compressed. 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 9. Tools and equipment required for setup: 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 10. Three-stage bootup process: Power-on self test (POST) Locate and load Cisco IOS Locate startup configuration file or enter setup mode 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 11. POST (Power On Self Test) test hardware After POST, the bootstrap program is loaded Bootstrap locates IOS and loads it into RAM IOS can be located flash memory, TFTP server, or another location By default, IOS loads from flash After IOS is loaded, bootstrap locates startup configuration file in NVRAM (non-volatile random access memory) Startup configuration when loaded into RAM (working memory), it become the running configuration. 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 12. Loading Cisco IOS 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 13. Show version command output Router>show version IOS version Bootstrap program stored in ROM Complete filename of IOS Type of CPU; amount of RAM Number & type of interfaces Amount of NVRAM (used to store startup config) Amount of Flash (used to store IOS Configuration register in hex 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 14. Configuration register Default setting 0x2102 (remember this?) Loads IOS from flash Loads startup-config from NVRAM Most common settings 0x2142 ignores contents of NVRAM/configuration 0x2120 The router into ROMmon mode 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 15. Initial ISR Router Configuration Verifying and troubleshooting bootup process: View output from the show version command Use dir flash: and boot flash: in ROMmon mode View boot system commands [see miage below on next slide] 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 16. Out-of-band management for initial configuration In-band management over a network connection 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 17. Command Line Interface (CLI): text-based program Can be used in both in-band or out-of-band 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 18. SDM Security Device Manager (SDM): web-based GUI In-Band only SDM Express (Basic) or Full package (Advanced configuration) Comes preinstalled in flash 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 19. CLI vs. SDM 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 20. Using Cisco SDM Express and SDM Follow best practices for installing a new device to ensure correct functions 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 21. 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management Eight SDM Express configuration screens: Overview Basic configuration LAN IP address DHCP Internet (WAN) Firewall Security settings Summary 22. Use Basic NAT Wizard to configure dynamic NAT with PAT 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 23. Use Cisco IOS CLI to perform an initial router configuration 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 24. Configure serial and Ethernet interfaces on a router 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management (DTE) Data Terminal Equipment endpoint of users device on the WAN link; Cisco routers (DCE) Data Communications Equipment; provides clock rate; modem; converts data from router to acceptable format to cross the WAN If back-to-back router scenario, one of the routers will be DCE and one DTE. 25. 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management Configure a default route for the Cisco router Default route used when router does not know where to send a packet. IP address of next-hop router Or port number 26. Configure a Cisco router to function as a DHCP server 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 27. Configure static NAT on a Cisco router to enable Internet access for an internal server 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 28. Back up and restore configuration files using a TFTP server 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 29. Capture and save configuration file output from a terminal session 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 30. 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management Customer Premise Equipment (CPE) network devices installed at customer location. Configuration checklists ensure that all configuration requirements are met 31. Use inventory and configuration checklists and an installation plan to ensure successful installation 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 32. Types of customer connections over a WAN: Point-to-point: often called leased lines; typically most expensive; price based on bandwidth & distance between 2 points Circuit-switched similar to a phone call made over a phone network; example is ISDN or dialup connection; physical circuit reserved from source to destination Packet-switched each customer has a virtual circuit; example is Frame Relay 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 33. Customer Connections over WAN Bandwidth and cost influence WAN choices 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 34. Connecting the CPE to the ISP Clock rate and serial encapsulation are needed when configuring serial WAN connections Clock rate is set by DCE DTE accepts clock rate Leased WAN connections use serial connection & require Channel Service Unit/Data Service Unit (CSU/DSU 09/06/13 Instructional Design-Computer Networking - Bridges Educational Group Network Device Management 35. Initial Cisco 2960 Switch Configuration Fixed-configuration, standalone devices does not use modules or flash card slots. Physical configuration cant be changed. Layer 2 device that directs stream of message coming in from one port, our of

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