Category Archives: Uncategorized

EIGRP Troubleshooting

2010-04-14 07:45:39 EIGRP Troubleshooting Enhanced Interior Gateway Protocol (EIGRP) EIGRP is a Cisco proprietary hybrid routing protocol or an advance distance vector routing protocol. There are four components that make up EIGRP: 1. Protocol-dependent modules — Supports several routed protocols. … Continue reading

Posted in Uncategorized | Leave a comment

Troubleshooting Processes

The best reason to follow a structured approach is the shot in the dark that often happens if you don’t gather enough information or work to nail down the cause of the problem. It results in haphazard guessing with little … Continue reading

Posted in Uncategorized | Leave a comment

Riding Rickshaw

I live in Auburn Alabama and as you might have heard, it is a college town with a major college football team. In the fall, socializing revolves around football. I believe part of the reason is because there are no … Continue reading

Posted in Uncategorized | Leave a comment

Pingcheck

In my previous posts I have discussed other scripts to monitor or work with DNS. This pingcheck script is used to find used or unused IP addresses in the network, or to populate an arp table for a subnet. You … Continue reading

Posted in Code, Uncategorized | Leave a comment

Congestion Management and Queuing

Definitions: Tail drop — When a queue becomes full and new packets are dropped. Speed mismatch— The incoming interface speed exceeds the outgoing interface speed. Aggregation problem — The traffic from many interfaces aggregates into one interface that does not … Continue reading

Posted in Routing, Uncategorized | Leave a comment

Delete Files Not in Use

Delete files not in use Sometimes you need to clear out a directory of files but don’t want to delete any files in use by a program or user. This little script is the answer to those problems. There are … Continue reading

Posted in Uncategorized | Leave a comment

Save Money, Print to PDF

Once again this post will be pretty mundane to the typical enterprise Linux admin. I continue to post these projects because it highlights what can be done with free software, plus I have worked out some kinks that others may … Continue reading

Posted in Uncategorized | Leave a comment