How to Reset a Cisco Catalyst 3550 / 3560 Switch to Factory Defaults in privileged mode: (#) delete flash:vlan.dat Switch#delete flash:vlan.dat Delete filename ...
Switch#show run Building configuration... Current configuration : 4716 bytes ! version 12.2 no service pad service timestamps debug uptime service timestamps log ...
Spanning Tree enable spanning tree switch enable switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. switch(config)#spanning...
Detect the current switch in a rack or stack Think of a rack full of cisco switches, you have remote access to the switch, but if you stand in formt of the rack y...
Enable telnet Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#username admin privilege 15 password 0 admin...
Co Channel Interference (Interference zwischen benachbarten Kanälen} Stellt Eure APs wenn möglich auf Kanal 1, 7 oder 13 ein! Bei Wireless LAN im 2,4GHz Ban...
How to colorize dhcpd logs On some linux grep will make some colors. With export GREP_COLOR='01;34' you can change the grep color. tail f /var/log/messages gre...
Howto use colors in the terminal with Solaris PuTTY connect to solaris 10 or 11 without color I tried xterm, xtermc, sun color, xterm color on both sides (PuTTY a...
Common error messages in the dhcpd log peer holds all free leases dhcpd: DHCPDISCOVER from 3c:c9:3b:a0:58:2b via 10.123.23.129: peer holds all free leases A stat...
Headline What is the best way to remove all packages and start over? 1 Update the ports tree. 2 Run pkg_delete pkg_delete a 3 Back up /usr/local/etc/ ...
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Correct resolution in VirtualBox I have to set the correct resolution in the config. I was fixed to a 640x480 resolution. With xrandr i can view the possible reso...
How to create random file of defined size dd if=/dev/zero of=the_file bs=1 count=0 seek=100M dd if=./randomgruetze of=./testfile100M bs=1024 count=100000 seek=$ 1...
curl Download a file (wget replacement) curl OL http://example.com/foo.tgz View the HTML Header curl IsS http://s2p.de/Sysadmin/WebHome Check if apache can g...
work in progress DDI Konzept Dies soll ein generisches DDI Konzept sein, das als Grundlage (Blaupause) dienen kann. Es soll exemplarisch die Stichpunkte liefern,...
Wie man DNSSEC mit Domains bei united domains.de aktiviert Howto enable DNSSEC with Domains at united domains.de 1 Sie müssen die Domain auf einen eigenen DNS ...
Was darf man beim WarDriving? Hier wäre mal ein kompetenter Kommentar wünschenswert. Bis dahin gebe ich mal meine Vorstellung zum Besten. Soweit ich weiss, darf m...
Datendurchsatz im WLAN In der Praxis gemessene Datenraten sind bei den jeweiligen WLAN Standards zu finden, hier wird grundsätzlich erklärt, warum der in den Stan...