Tremendous amounts of useful operations data and warnings of pending failures are available in the router logs. The challenge is that, as the network gets larger, so do the number of entries in the logs, which can quickly grow to unmanageable size. Automating the analysis of router logs is essential to allow using the router logs as a proactive network management tool. Many organizations fail to take full advantage of the available information because of the high initial cost of programming around the various inconsistencies in the way various events are reported, the frequency with which individual entries are delayed, duplicated or missing, and the need to customize software to match their network configuration. This paper looks at some of the techniques used by Networking Unlimited, Inc to improve the accuracy of automated log analysis and make it a cost-effective tool for network management and improving network reliability.
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