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Network Monitoring and Management Network Documentation These materials are licensed under the Creative Commons Attribution-Noncommercial 3.0 Unported license (http://creativecommons.org/licenses/by-nc/3.0/) as part of the ICANN, ISOC and NSRC Registry Operations Curriculum. Documentation Maybe you ve asked, How do you keep track of it all? ... Document, document, document Documentation Basics, such as documenting your switches... What is each port connected to? Can be simple text file with one line for every port in a switch: health-switch1, port 1, Room 29 Director s office health-switch1, port 2, Room 43 Receptionist health-switch1, port 3, Room 100 Classroom health-switch1, port 4, Room 105 Professors Office .. health-switch1, port 25, uplink to health-backbone This information might be available to your network staff, help desk staff, via a wiki, software interface, etc. Remember to label your ports! Documentation: Labeling Nice Network Documentation More automation might be needed. An automated network documentation system is something to consider. You can write local scripts to do this. You can consider some automated documentation systems. You ll probably end up doing both. Automated Systems There are quite a few automated network documentation systems. Each tends to do something different: IPplan: http://iptrack.sourceforge.net/ Netdisco: http://netdisco.org/ Netdot: https://netdot.uoregon.edu/ Rack Tables: http://www.racktables.org/ IPplan: From the IPplan web page: IPplan is a free (GPL), web based, multilingual, TCP IP address management (IPAM) software and tracking tool written in php 4, simplifying the administration of your IP address space. IPplan goes beyond TCPIP address management including DNS administration, configuration file management, circuit management (customizable via templates) and storing of hardware information (customizable via templates). Lots of screenshots: http://iptrack.sourceforge.net/doku.php?id=screenshots Netdisco: Project launched 2003. Version 1.0 released October 2009. Some popular uses of Netdisco: Locate a machine on the network by MAC or IP and show the switch port it lives at. Turn Off a switch port while leaving an audit trail. Admins log why a port was shut down. Inventory your network hardware by model, vendor, switch-card, firmware and operating system. Report on IP address and switch port usage: historical and current. Pretty pictures of your network. Racktables: From the http://racktables.org page: Have a list of all devices you've got Have a list of all racks and enclosures Mount the devices into the racks Maintain physical ports of the devices and links between them Manage IP addresses, assign them to the devices and group them into networks Document your firewall and NAT rules Describe your load balancing policy and store load balancing configuration Attach files to various objects in the system Create users, assign permissions and allow or deny any actions they can do Label everything and even everyone with flexible tagging system Access all this from the web Netdot: Includes functionality of IPplan and Netdisco and more. Core functionality includes: Device discovery via SNMP Layer2 topology discovery and graphs, using: CDP/LLDP Spanning Tree Protocol Switch forwarding tables Router point-to-point subnets IPv4 and IPv6 address space management (IPAM) Address space visualization DNS/DHCP config management IP and MAC address tracking Continued Netdot: Functionality continued: Cable plant (sites, fiber, copper, closets, circuits...) Contacts (departments, providers, vendors, etc.) Export scripts for various tools (Nagios, Sysmon, RANCID, Cacti, etc) I.E., how we could automate node creation in Cacti! Multi-level user access: Admin, Operator, User It draws pretty pictures of your network Documentation: Diagrams Diagramming Software Windows Diagramming Software - Visio: http://office.microsoft.com/en-us/visio/FX100487861033.aspx - Ezdraw: http://www.edrawsoft.com/ Open Source Diagramming Software - Dia: http://live.gnome.org/Dia - Cisco reference icons: http://www.cisco.com/web/about/ac50/ac47/2.html - Nagios Exchange: http://www.nagiosexchange.org/ Questions ?

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