For 2960 series, there is previous post about it:
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Cisco Catalyst WS-C3850-48T-S and Components (Unboxed) |
Cisco Catalyst WS-C3850-48T-S and Components in the Boxes |
Received a bunch of boxes for Cisco 3850, which will be used to build a switch stack for high availability switching environment.
For 2960 series, there is previous post about it:
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Here are some collections for bloggers from my blogger experience:
1. Adjust Right Sidebar margin width 2. Add youtube Playlist into blogger 3. Add Third Party Domain 4. Redirect Blogspot Site from One to Another 5. Put images side by side in Blogger's posts without any codes 6. Add a table into Blogger post 7. Add a code section into your post There are one related post in this blog:
Working on stacking two Cisco 2060X switches recently, and two 2960X Stack module and 0.5m stacking cables received today. Product name is C2960X-STACK= and description is Catalyst 2960-X FlexStack Plus Stacking Module optional. Part Number is CMUCAEGBAA.
For 3850 switches, it is in this post:
Symptoms:
One of my clients reported a Cisco AnyConnect issue. It only happened to his machine and later we found that is because he is using Mac machine. His credential works fine if he uses it at windows machine. From following screenshot, obviously there is Mac AnyConnect package missing from vpn gateway. Error Messages: "VPN
During our regular maintenance, after rebooted one SRX345, and found it stuck at db mode, which is debug mode.
After a short and quick analysis, I found Juniper JunOS devices may get stuck in the boot process or fail to boot the OS, in rare cases, after a sudden power loss or ungraceful power shut down. Juniper routers, switches and firewalls can experience file system corruption, which prevents the device from recovering to a functional state. It is recommended that customers minimize their log configurations to prevent excessive read/writes to the file system, which reduces the stress on storage media and reduces the potential occurrence of this issue. Moreover, if abrupt power failures are transient for a very short period of time, the availability of an UPS can also prevent the device from experiencing a sudden power loss. You do not have to worry about damaging hardware in these situations, as the hardware cannot tell the difference between a graceful shutdown and pulling the power cord. The potential for damage is with the file system structure. It is possible for data to be corrupted, when the computer's power is interrupted with the operating system running. The data could be in the nodes, which could result in files being lost or file contents being corrupted. Although rare, this issue more likely occurs on platforms that use a UNIX/BSD-based operating system, such as Junos, to access the flash-based storage media. “Although rare, file system damage can occur with an abrupt power off, which may cause problems on the next boot. Use the request system halt or request system reboot command to gracefully shut down or reboot the OS. Once the OS is halted, it is safe to remove power.” - from O'Reilly Media’s JUNOS Enterprise Switching book. There are a couple of KB discussing the fix. KB29811 is using a USB to copy a snapshot from healthy device to faulty device. KB20046 suggest to press space to go to u-boot prompt and enter some commands to fix issue.
db> help
DDB Quick Help
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Type 'c' to continue, 'reset' or 'panic' to restart.
print p examine x search set write
w delete d break dwatch watch dhwatch
hwatch step s continue c until next
match trace alltrace where bt call show
ps gdb reset kill watchdog thread panic
ddbdumpsys dumpsys
db> reset
AWS provides a 750 hours free tier on Windows machine. I am always wondering how to install wordpress on it to use this free tier instance . Here is all steps I followed today. Most steps are same as WPMU DEV's post "Setting Up WordPress Locally for PC/Windows with WampServer". I do add some of my own experience in the steps.
Basically WampServer = (Apache, PHP, MySQL on Windows). WAMP is the software suite installed on popular Windows operate system, includes Apache, MySQL, PHP and some other tools. It is derived from LAMP which stands for Linux, Apache, MySQL, and PHP. As the name implies, while LAMP is used on Linux servers, WAMP is used on Windows servers. Note: Microsoft WebPI is another popular way to install wordpress on Windows server. But truly not recommend. I managed to get it working and eventually still find WAMP is better and easier to use. For Windows: WAMP and Wordpress Install on AWS Free Tier Windows 2012 R2 For Ubuntu: LAMP and WordPress Installation on Ubuntu
I have selected Ubuntu as OS platform to install my php, wordpress and mysql. It gave me lots of learning experience on Linux. Here is many steps I recorded during working on my 51sec.org blog site.
For Windows: WAMP and Wordpress Install on AWS Free Tier Windows 2012 R2 For Ubuntu: LAMP and WordPress Installation on Ubuntu 1. Basic Ubuntu Configuration (Not in Cloud) 1.1 Configure Interfaces
Also Wordpress plug-in "All-in-One WP Migration" helped a lot during this process. Whole blog was exported to a 120M package. Unfortunately I still got a problem when access www.51sec.org site later which is running on AWS Linux instance. |
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