This recipe describes a simple method to send DHCP bindings from a Cisco router to a remote TFTP server running on Windows. \u00a0A batch file renanes and date-stamps the file and another batch file removes the archived files after a retention period:<\/p>\n
EEM SCRIPT ON CISCO\u00a0ROUTER:<\/strong><\/p>\n (Note:<\/strong> the cron entry sends the file every 5 minutes) BATCH FILE ON TFTP SERVER TO DATE-STAMP FILES RECEIVED:<\/strong> set datestamp=%YYYY%%MM%%DD% ren “bindings.txt” “bindings – %fullstamp%.txt” BATCH FILE CONTENTS – RETENTION PERIOD OF 3 DAYS<\/strong> <\/p>\n","protected":false},"excerpt":{"rendered":" This recipe describes a simple method to send DHCP bindings from a Cisco router to a remote TFTP server running on Windows. \u00a0A batch file renanes and date-stamps the file and another batch file removes the archived files after a retention period: EEM SCRIPT ON CISCO\u00a0ROUTER: (Note: the cron entry sends the file every 5 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[83,67],"tags":[],"_links":{"self":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2223"}],"collection":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2223"}],"version-history":[{"count":5,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2223\/revisions"}],"predecessor-version":[{"id":2231,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2223\/revisions\/2231"}],"wp:attachment":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2223"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nevent manager session cli username “your_username” \u00a0(NOTE: this is required if tacacs+ is running on the router)
\nevent manager applet copy-dhcp-bindings
\nevent timer cron cron-entry “*\/5 * * * * ”
\naction 0.5 cli command “enable”
\naction 1.0 cli command “show ip dhcp binding | redirect tftp:\/\/[ip_address]\/bindings.txt”
\n!
\nend<\/p>\n
\n@echo off
\n:loop
\nfor \/f “delims=” %%a in (‘wmic OS Get localdatetime ^| find “.”‘) do set “dt=%%a”
\nset “YY=%dt:~2,2%”
\nset “YYYY=%dt:~0,4%”
\nset “MM=%dt:~4,2%”
\nset “DD=%dt:~6,2%”
\nset “HH=%dt:~8,2%”
\nset “Min=%dt:~10,2%”
\nset “Sec=%dt:~12,2%”<\/p>\n
\nset timestamp=%HH%%Min%%Sec%
\nset fullstamp=%YYYY%-%MM%-%DD%_%HH%-%Min%-%Sec%<\/p>\n
\npowershell -command “Start-Sleep -s 5
\ngoto loop<\/p>\n
\n@echo off
\n:loop
\npowershell -command “Start-Sleep -s 259200
\ndel bindings*.*
\ngoto loop<\/p><\/blockquote>\n