More About the IS-IS Link-State Database

The previous sections review components of the IS-IS Link-State database and discuss flooding mechanisms designed to optimize Link-State database synchronization on various media. In a stable IS-IS network, usual routing-related activities include sending and receiving hello packets to maintain adjacencies, periodic advertising of CSNPs on broadcast links, and the refreshing of LSPs. Network instabilities trigger dynamic disruptions, which when extensive result in a depletion of processing and bandwidth resources and ultimately meltdown of the network. This section looks at the operation and maintenance of the IS-IS database and discusses some stability and performance-related issues pertaining to these ...

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