ImageStream IS Gateway and Rebel Routers
Testing the operation of a high-end router without having a high-end use for it can be a serious challenge. Fortunately, ImageStream was kind enough to provide a pair of routers so I could get a feel for setting up high-speed circuits. In all of my testing, I was never able to heavily load either router noticeably. In fact, both routers took everything I could throw at them and didn't blink once.
Regular configuration file backups will be easy for people with physical access to the routers. The menu-based backup option will use the floppy drive only to save or restore. An administrator could perform his own network backups, of course, but an option to generate an archive file and store it using FTP would be nice. If you do not expect to do a lot of reconfiguring, you won't need to do a lot of backups, and the biggest maintenance hassle will be keeping the air filters clean—a hassle I could live with quite easily.
Tracking down problems when something does go wrong may be a bit of a headache. You will need to exit the menu in order to diagnose all but the simplest problems, but unlike mainstream routers, knowledge of Linux networking will actually help. The system and network interface status can be read and viewed using standard commands such as ps, uptime and ifconfig and exploring the /proc file system, but some of the most important information is unavailable. For example, you can read the current active route tables using the route command, but the router cannot tell you where the routes came from. Tracking down a BGP or OSPF configuration problem is going to be like dancing blindfolded—possible, but best done without an audience. ImageStream includes 24/7 tech support with their routers, so you'll always have a dance partner available and that should be a real help. The latest release of GateD includes new routing status monitoring tools, and when ImageStream updates their system later this year, the diagnostic capabilities will take a quantum leap forward. As it is, the limited diagnostic information available is the worst feature of these routers.
The Gateway and Rebel routers, as tested, performed every task set before them flawlessly. While there is room for improvement, especially in the area of feature documentation and diagnostic information, their functionality and features cannot be denied. If you know Linux and are looking for a high-end backbone router, the ImageStream routers should be on your list—or in your rack.
Born at the beginning of the microcomputer age, Jon Valesh (firstname.lastname@example.org) has pushed and been pushed by computers his entire life. Having run the gamut from games programmer to ISP system/network administrator, he now occupies himself by providing technical assistance to ISPs and small businesses whenever his day job doesn't get in the way.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
Free to Linux Journal readers.View Now!
|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- The Firebird Project's Firebird Relational Database
- Stunnel Security for Oracle
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Managing Linux Using Puppet
- SUSE LLC's SUSE Manager
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Doing for User Space What We Did for Kernel Space
- SuperTuxKart 0.9.2 Released
- Google's SwiftShader Released
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide