TLDR; How to update CIMC 2.x/3.x to a recent version starts below at “Update Procedure” Storytime I support a Cisco Wireless infrastructure for a hospital with about 2.000 APs and 3 5520 WLCs. The environment was on 8.5.151 and the… Read more5520 AireOS CIMC Update
As different wireless exams ask for theoretical knowledge about the PHYs, I googled for an overview of all PHYs in a single table. I was not able to find one and therefore created such a table based on the CWNA-108… Read more802.11 Physical Layers (PHYs)
One of my most used tools is definitely my WLAN Pi. It’s so flexible and has various tools installed. I can capture packets and power it over PoE. I often plug it in using its usb interface to my computer… Read moreJoin WLAN Pi to a 802.1X WiFi with EAP-TLS
Cisco offers an option to put newly joined APs into a special AP-group. This group called “Out-Of-Box” sets per default the radios administratively down and does not include any WLANs. The thoughts behind this are, that brand new APs can… Read moreOut-Of-Box AP-Group
CFA run sql select d.name as device, n.dnorpattern, cfd.cfadestination from device as d inner join devicenumplanmap as dmap on dmap.fkdevice=d.pkid inner join numplan as n on dmap.fknumplan=n.pkid inner join callforwarddynamic as cfd on cfd.fknumplan=n.pkid where (cfd.cfadestination!=”) Phone Query (for Active… Read moreCUCM CFA query / Phone Query SQL
– Check uploaded ROMMON file verify /md5 isr4200_4300_rommon_169_1r_SPA.pkg – Start upgrade (will take about 3-5 min) upgrade rom-monitor filename bootflash:iisr4200_4300_rommon_169_1r_SPA.pkg all (not “flash:” otherwiese you see -> Invalid file:\ flash:isr4200_4300_rommon_169_1r_SPA.pkg) – Reload – Check Version after upgrade and reload sh rom-monitor R0… Read moreROM Upgrade 43xx Router
monitor capture TRACE01 interface range gigabitEthernet 0/0/0-1 both monitor capture TRACE01 match ipv4 any any monitor capture TRACE01 start monitor captureTRACE01 stop show monitor capture TRACE01 buffer brief show monitor capture TRACE01 buffer detailed no monitor capture TRACE01 monitor capture… Read morePCAP / ISDN Trace CUBE
Manchmal muss man bei den jabber Problem Reports das DUMP file analysieren. Dies geht mit dem Tool WinDBK. Nach dem man das DUMP File mit WinDBK geöffnet hat kann man mittels folgenden Befehl das Dump File analysieren: !analyze -v
hdiutil makehybrid -o ~/Desktop/image.iso ~/path/to/folder/to/be/converted -iso -joliet
Kleiner shortcut für CUCM CLI sql query um den Line Group Status abzufragen run sql select lg.name as LineGroup, n.dnorpattern, dhd.hlog from linegroup as lg inner join linegroupnumplanmap as lgmap on lgmap.fklinegroup=lg.pkid inner join numplan as n on lgmap.fknumplan =… Read moreCUCM – SQL Query – Active Line Group participants