{"id":566,"date":"2019-04-15T07:45:02","date_gmt":"2019-04-15T12:45:02","guid":{"rendered":"https:\/\/packitforwarding.com\/?p=566"},"modified":"2019-04-14T19:41:41","modified_gmt":"2019-04-15T00:41:41","slug":"switchmap-tool-perl-linux","status":"publish","type":"post","link":"https:\/\/packitforwarding.com\/index.php\/2019\/04\/15\/switchmap-tool-perl-linux\/","title":{"rendered":"Switchmap"},"content":{"rendered":"\n<p>I&#8217;m often asked what my favorite tools are for networking. Today I&#8217;m going to feature one of them. <a href=\"https:\/\/sourceforge.net\/projects\/switchmap\/\">Switchmap<\/a> has been in my toolbox for many years. It was created as an Open Source project by <a href=\"https:\/\/sourceforge.net\/u\/siemsen\/\">Peter Siemsen<\/a>. The tool is a set of Perl scripts that are run periodically, usually by a cron job.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">GetArp.pl<\/h4>\n\n\n\n<p>The first script is GetArp.pl. This script uses SNMP (v2 or v3) to retrieve the ARP table from the routers or layer 3 switches listed in the configuration file. This script is key to being able to match up the IP address with the MAC address and switchport information that will be retrieved by the next script. If you have a layer 3 access layer, be sure to list every layer 3 access switch as a router as well as a switch in the configuration so that their ARP tables are retrieved.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">ScanSwitch.pl<\/h4>\n\n\n\n<p>ScanSwitch.pl is the second switch to be run. This script can take <g class=\"gr_ gr_13 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del\" id=\"13\" data-gr-id=\"13\">awhile<\/g> to run depending on how many switches are involved. It retrieves a lot of data from several different MIBs via SNMP. The core of this data is the switch&#8217;s MAC Address table. It also will retrieve the switchport status and LLDP\/CDP information.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">SwitchMap.pl<\/h4>\n\n\n\n<p>The namesake script is the final script to run. It takes all of the data collected by the other two scripts and creates a set of static HTML files. These files are then accessed using your choice of a web server to serve them. <\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/04\/2019-04-08_14-58-49.png?ssl=1\"><img loading=\"lazy\" decoding=\"async\" width=\"1680\" height=\"858\" data-attachment-id=\"568\" data-permalink=\"https:\/\/packitforwarding.com\/index.php\/2019\/04\/15\/switchmap-tool-perl-linux\/2019-04-08_14-58-49\/\" data-orig-file=\"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/04\/2019-04-08_14-58-49.png?fit=1680%2C858&amp;ssl=1\" data-orig-size=\"1680,858\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"2019-04-08_14-58-49\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/04\/2019-04-08_14-58-49.png?fit=640%2C327&amp;ssl=1\" src=\"https:\/\/i2.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/04\/2019-04-08_14-58-49.png?fit=1024%2C523&amp;ssl=1\" alt=\"Screenshot of the SwitchMap tool web page.\" class=\"wp-image-568\" srcset=\"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/04\/2019-04-08_14-58-49.png?w=1680&amp;ssl=1 1680w, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/04\/2019-04-08_14-58-49.png?resize=300%2C153&amp;ssl=1 300w, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/04\/2019-04-08_14-58-49.png?resize=768%2C392&amp;ssl=1 768w, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/04\/2019-04-08_14-58-49.png?resize=1024%2C523&amp;ssl=1 1024w, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/04\/2019-04-08_14-58-49.png?w=1280&amp;ssl=1 1280w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p>In the above image, you can see how the data is presented. Active ports (at the time of the scan) are highlighted in green. Inactive ports that have been inactive for less than the number of days specified in the configuration are light gray. Disabled and long term inactive ports are dark gray. The software also has an opinion that every active port should have an interface description, those that don&#8217;t will have that field highlighted in red.<\/p>\n\n\n\n<p>One of my favorite uses of this tool is to find ports that are plugged in on a switch but that haven&#8217;t been used in over 90 days. I use this data to then clean up my patch field. Beyond that, I have used this tool on a daily basis for a quick reference of what is where. I also like to use it for switch migrations. The clean format of the data makes it easy to plan what VLANs are needed for what ports. You can even use it to check off ports as you go through the migration.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Ben&#8217;s Take<\/h4>\n\n\n\n<p>Many paid tools, that I have access to, also have this type of functionality, but the clean interface for Switchmap has brought me back to it time after time. Sometimes having a tool that loads quickly and is easy to use trumps something that has more bells and whistles. Do you have any tools that may not be as shiny as others, but that you continue to use because they&#8217;re reliable for what you need?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m often asked what my favorite tools are for networking. Today I&#8217;m going to feature one of them. Switchmap has been in my toolbox for many years. It was created as an Open Source project by Peter Siemsen. The tool is a set of Perl scripts that are run periodically, usually by a cron job. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":574,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"What's in your network toolbag?  - Switchmap #ciscochampion","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[88,25],"tags":[110],"class_list":["post-566","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-tools","tag-tools"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Switchmap - Map switchports to hosts with the tool.<\/title>\n<meta name=\"description\" content=\"We all have tools that we use in our daily work. 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OSI Model Application: HTTP, SSH, IMAPPresentation: EncodingSession: Sockets, WinsockTransport: UDP\/TCPNetwork: Packets, IP, Routers (Layer-3 Switches)Data-Link: Switches, MAC Address, FramesPhysical: Cabling, Media, Hubs Acrostic to remember in order, All People Seem To Need\u2026","rel":"","context":"In &quot;Blog&quot;","block_context":{"text":"Blog","link":"https:\/\/packitforwarding.com\/index.php\/category\/blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/02\/play-stone-network-networked-interactive-163064.jpeg?fit=640%2C426&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/02\/play-stone-network-networked-interactive-163064.jpeg?fit=640%2C426&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/02\/play-stone-network-networked-interactive-163064.jpeg?fit=640%2C426&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":1332,"url":"https:\/\/packitforwarding.com\/index.php\/2021\/03\/26\/pcnsa-2-6\/","url_meta":{"origin":566,"position":1},"title":"PCNSA &#8211; 2.6","author":"Ben Story","date":"March 26, 2021","format":false,"excerpt":"Identify and configure firewall interfaces.Palo Alto Networks PCNSA Study Guide v10 Special Interfaces Decrypt Mirror: Allows traffic that has been decrypted to be sent to other tools for analysis. This is not available on VM-Series firewalls.Log card: On the PA-7000 series firewalls a log card data is used for forwarding\u2026","rel":"","context":"In &quot;Blog&quot;","block_context":{"text":"Blog","link":"https:\/\/packitforwarding.com\/index.php\/category\/blog\/"},"img":{"alt_text":"close up photo of gray metal pipes","src":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2021\/03\/pexels-photo-1381938.jpeg?fit=1200%2C798&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2021\/03\/pexels-photo-1381938.jpeg?fit=1200%2C798&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2021\/03\/pexels-photo-1381938.jpeg?fit=1200%2C798&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2021\/03\/pexels-photo-1381938.jpeg?fit=1200%2C798&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2021\/03\/pexels-photo-1381938.jpeg?fit=1200%2C798&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1137,"url":"https:\/\/packitforwarding.com\/index.php\/2020\/04\/08\/packaging-cisco-anyconnect\/","url_meta":{"origin":566,"position":2},"title":"Packaging Cisco AnyConnect","author":"Ben Story","date":"April 8, 2020","format":false,"excerpt":"The Problem Just like many corporations, my corporation recently had to scramble for solutions to move our workforce to their homes for COVID-19. For our emergency work from home solution, we used VMWare's Horizon software for the majority of our workers. This worked great, but there was a small subset\u2026","rel":"","context":"In &quot;cisco&quot;","block_context":{"text":"cisco","link":"https:\/\/packitforwarding.com\/index.php\/category\/cisco\/"},"img":{"alt_text":"Photo by Andrea Piacquadio from Pexels","src":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2020\/04\/woman-in-grey-jacket-sits-on-bed-uses-grey-laptop-935743.jpg?fit=640%2C426&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2020\/04\/woman-in-grey-jacket-sits-on-bed-uses-grey-laptop-935743.jpg?fit=640%2C426&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2020\/04\/woman-in-grey-jacket-sits-on-bed-uses-grey-laptop-935743.jpg?fit=640%2C426&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":473,"url":"https:\/\/packitforwarding.com\/index.php\/2019\/03\/01\/powershell-tools-networking\/","url_meta":{"origin":566,"position":3},"title":"PowerShell, It&#8217;s Not Just for Server Jockeys","author":"Ben Story","date":"March 1, 2019","format":false,"excerpt":"A long time ago in what almost seems like another galaxy, I was a server jockey. I was doing Linux before Linux was cool. BASH and Perl were my go to tools. Fast forward to now and the Windows server guys have finally found the joy of the shell script\u2026","rel":"","context":"In &quot;Blog&quot;","block_context":{"text":"Blog","link":"https:\/\/packitforwarding.com\/index.php\/category\/blog\/"},"img":{"alt_text":"powershell tools","src":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/02\/pexels-photo-268774.jpeg?fit=640%2C426&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/02\/pexels-photo-268774.jpeg?fit=640%2C426&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/02\/pexels-photo-268774.jpeg?fit=640%2C426&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":477,"url":"https:\/\/packitforwarding.com\/index.php\/2019\/03\/01\/ccna-cyberops-objective-1-6-1-12\/","url_meta":{"origin":566,"position":4},"title":"CCNA CyberOps SECFND Objective 1.6 &#8211; 1.12","author":"Ben Story","date":"March 1, 2019","format":false,"excerpt":"1.6 Describe IP subnets and communication within an IP subnet and between IP subnets. IP subnets are used to divide a network into smaller broadcast domains. Communication within an subnet is done directly from one host to another using ARP for resolving the MAC address of the host. When a\u2026","rel":"","context":"In &quot;Blog&quot;","block_context":{"text":"Blog","link":"https:\/\/packitforwarding.com\/index.php\/category\/blog\/"},"img":{"alt_text":"Photo by Francis Seura from Pexels","src":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2018\/09\/pexels-photo-802412.jpeg?fit=640%2C425&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2018\/09\/pexels-photo-802412.jpeg?fit=640%2C425&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2018\/09\/pexels-photo-802412.jpeg?fit=640%2C425&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":573,"url":"https:\/\/packitforwarding.com\/index.php\/2019\/05\/03\/librenms\/","url_meta":{"origin":566,"position":5},"title":"LibreNMS","author":"Ben Story","date":"May 3, 2019","format":false,"excerpt":"Although I don't currently run LibreNMS in my own network, it is one of those tools that I keep in my toolbox. LibreNMS is a fork of the Observium project. The tool is written in PHP and can be run on any Linux with either Apache or NGINX. Setup One\u2026","rel":"","context":"In &quot;Blog&quot;","block_context":{"text":"Blog","link":"https:\/\/packitforwarding.com\/index.php\/category\/blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/05\/LibreNMS-tool-02.png?fit=1200%2C603&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/05\/LibreNMS-tool-02.png?fit=1200%2C603&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/05\/LibreNMS-tool-02.png?fit=1200%2C603&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/05\/LibreNMS-tool-02.png?fit=1200%2C603&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/packitforwarding.com\/wp-content\/uploads\/2019\/05\/LibreNMS-tool-02.png?fit=1200%2C603&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/posts\/566","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/comments?post=566"}],"version-history":[{"count":0,"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/posts\/566\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/media\/574"}],"wp:attachment":[{"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/media?parent=566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/categories?post=566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/packitforwarding.com\/index.php\/wp-json\/wp\/v2\/tags?post=566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}