When you try to configure trunk port you might see following error
An interface whose trunk encapsulation is Auto can not be configured to trunk mode
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Self-Service Linux: Mastering the Art of Problem Determination
The indispensable start-to-finish troubleshooting guide for every Linux professional.
Long Description: Now, there’s a systematic, practical guide to Linux troubleshooting for every power user, administrator, and developer. In Self-Service Linux®, two of IBM’s leading Linux experts introduce a four-step methodology for identifying and resolving every type of Linux-related system or application problem: errors, crashes, hangs, performance slowdowns, unexpected behavior, and unexpected outputs. You’ll learn exactly how to use Linux’s key troubleshooting tools to solve problems on your own–and how to make effective use of the Linux community’s knowledge.
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Open Source Security Tools: A Practical Guide to Security Applications
Few frontline system administrators can afford to spend all day worrying about security. But in this age of widespread virus infections, worms, and digital attacks, no one can afford to neglect network defenses.
Written with the harried IT manager in mind, Open Source Security Tools is a practical, hands-on introduction to open source security tools. Seasoned security expert Tony Howlett has reviewed the overwhelming assortment of these free and low-cost solutions to provide you with the “best of breed” for all major areas of information security.
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Linux Quick Fix Notebook (PDF Guide)
An indispensable ebook for every Linux administrator!
Instant access to precise, step-by-step solutions for every essential Linux administration task from basic configuration and troubleshooting to advanced security and optimization.
If you’re responsible for delivering results with Linux, Linux® Quick Fix Notebook brings together all the step-by-step instructions, precise configuration commands, and real-world guidance you need. This distilled, focused, task-centered guide was written for sysadmins, netadmins, consultants, power users…everyone whose livelihood depends on making Linux work, and keeping it working.
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