ASR-1001-X and IOS-XE is sometimes different and sometimes very similar to classic IOS. Update. You can update, the firmware as usual: # copy http: bootflash: # conf t (config)# boot system flash bootflash:asr1001x-universalk9.03.16.00.S.155-3.S-ext.SPA.bin Show SFP (transceiver) info: # show hw-module interface tenGigabitEthernet 0/0/0 transceiver status # show hw-module interface tenGigabitEthernet 0/0/0 transceiver idprom .. to be continued
Problem: You have a network with two upstream routers and an F5 LTM loadbalancer. Even though the default gateway points to router R1 the F5 LTM sends packets to the mac address of R2. Discussion: “This is a feature not a bug”. This “Feature” is called “Auto Last Hop”. Which means the F5 answers packets allways
F5 sending packets to wrong destination? Read More »
Problem: After upgrading an ethernet port to a channel-group, all MLPPP connections fail on a Cisco ASR 1002-X. The log file looks like this: Jul 31 2015 07:04:44.801 CEST: Vi4 PPP: Phase is AUTHENTICATING, Authenticated User Jul 31 2015 07:04:44.801 CEST: Vi4 CHAP: O SUCCESS id 143 len 4 Jul 31 2015 07:04:44.801 CEST: Vi4
MLPPP over L2TP over Ethernet Channel Groups on Cisco ASR Read More »
Problem: Google had a nice feature to build google maps from rss geo information with a simple iframe tag, but this service is discontinued. <iframe width=”920″ height=”450″ frameborder=”0″ scrolling=”no” marginheight=”0″ marginwidth=”0″ src=”https://maps.google.com/?q=http:%2F%2Ftothepin.blogspot.com%2Ffeeds%2Fposts%2Fdefault&ie=UTF8&t=t&source=embed&output=embed”> </iframe> You could actually add ?q=rssfeed to the maps.google.com url and it produced a map from all geo data in this rss feed. Solution: The
Google Map from RSS Feed Read More »
Problem: A fresh installed Debian 8 (Jessie) 32bit 686 uses only one core of a 6 core Xeon CPU. amd64 kernels don’t have this problem. Solution: The HP Proliant DL360 Gen9 has a BIOS option called “Processor x2APIC Support”. When you set this option to “Disabled” the Linux kernel uses all 6 cores. x2APIC is a
Debian 8 Uses only One Core of a Multi Core CPU Read More »
Problem: wget has an option to configure the timeout for dns, connect, and read or a combined timeout option “-T”. This option usually works, but it does not work during SSL handshake. You can test it with these commands: in one terminal start a dummy tcp service: nc -l 7777 and then try to connect to
Wget Ignores its Timeout Read More »
New mice often have lots of buttons. Some buttons are used by X and some are used by Applications: 1,2,3: Left, middle and right mouse button 4,5: Y axis mouse wheel 6,7: X axis mouse wheel 8,9: Foward and backward in browsers usually But other buttons are not mapped to any function mostly. My Mad
Mapping Mouse buttons to Commands Read More »
Problem: when you connect the Mad Catz R.A.T.5 mouse to a Linux box running openbox window manager, the window handling stops working. Sometimes mouse follow focus does not work, sometimes even clicking a window cannot activate it. Sometimes clicking window borders does not work, sometimes clicking into windows is ignored. Solution: This mouse has a mode button, which is
Openbox goes weird with R.A.T.5 Mad Catz Read More »
Problem: An external USB harddrive disconnects and immediately reconnects with different device name. You find log entries like these: Jan 17 00:46:52 workstation kernel: [212306.086568] sd 33:0:0:0: [sdj] Attached SCSI disk Jan 17 01:51:14 workstation kernel: [216168.064075] usb 2-4: USB disconnect, device number 11 Jan 17 01:51:15 workstation kernel: [216168.596514] usb 2-4: new SuperSpeed USB device
USB SCSI Disconnects when Idle Read More »
Problem: When you get I/O errors on your computers hard disk, it’s usually urgent to copy all data to a new disk. If you try to do a 1:1 copy using dd, you will see that dd stops when it reaches the first bad sector. Solution: use the following command to copy from one hard disk to second
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