Introduction to UNIX / Linux
This is part of the AfNOG 2014 Workshop, held in conjunction with the AfNOG meeting in Djibouti on May 25th, 2014.
This one-day supplemental workshop is part of the AfNOG 2014 Workshop on Network Technology, held in conjunction with the AfNOG meeting in Djibouti on May 25th, 2014.
This course held for those students needing some intensive, hands-on training to introduce them to core UNIX operating system concepts as well as fundamental network concepts.
Topics covered include:
Who should attend: AfNOG 2014 attendees who are not proficient at with the use of the UNIX or Linux operating system and for those wishing for an introduction to fundamental networking.
Prerequisites: Basic computer experience.
SESSION I Welcome:[PDF | PowerPoint] Introduction to Unix: [PDF | PowerPoint] - Some history - Kernel, shell, processes - Security model - File System, Directory Hierarchy, files Introduction to Commands: [PDF | PowerPoint] - Command format - Examples - Pipes - Command line power tools - Editing the command line - Copy/paste - Auto-completion with tab Lab: [PDF | TEXT] Editing: [PDF | PowerPoint] - Using vi (why?) - Other editor options (ee, joe, pico, emacs, xemacs) - vi modes - vi tricks (search ,replace, movement) - Editing configuration files References: "Vi Quick Reference" [PDF] "Vi Reference Card" [PDF] Lab: [PDF | MS Word] SESSION II TCP/IP Networking: [PDF | PowerPoint] - Review the OSI layers - Packet Headers - Packets TCP, IP, UDP, ICMP - IP Allocation Golden Rules - Netmask calculations - Gateway, network - Default vs static routes - Routing aggregation/supernetting - Interface(s) configuration - Route configuration Lab: [PDF | TXT] Forwarding and Routing Basics: [PDF | PowerPoint] - Forwarding table - Longest Prefix Rule - Default Route - Hop-by-hop forwarding - Asymmetric paths - Routing protocols (OSPF, IS-IS, BGP) - Scalability References: "Agreggation Tree" [PDF] "Aggregation Tree - Example of Use" [PDF] "Decimal - Hex - Binary - Conversion" [html | PDF] "Golden Rules for Allocating IP Numbers" [html | PDF] "IP Addressing" [html | PDF] "Netmask Table" [html| PDF] Lab: [PDF | TEXT] ADDITIONAL REFERENCES Network Performance Definitions & Metrics: [PDF | PowerPoint] - Planning - Common measurements: bps, pps, rtt, jitter, etc. - Channel capacity and utilization - 95th percentile - end-to-end delay - Types of delay - Packet loss - Flow control and congestion algorithms - Common tools: mtr, netstat, lsof, tcpdump, tshark (wireshark), iptraf, iperf