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Which of the following descriptions about ISIS' LSP fragmentation extension is correct??
Correct Answer: A
Explanation when IS- The link state protocol data packet PDU (Protocol Data When the amount of information in the Unit) is too large, the IS-IS router will generate multiple LSP fragments to carry more IS-IS information. IS-IS LSP fragmentation by LSP LS in IDP Number field for identification, the length of this field is 1 byte. Therefore, an IS-IS process can generate up to 256 LSP fragments, which carry a limited amount of information. As specified in RFC3786, IS-IS can configure virtual SystemID , and generate virtual IS-IS LSPs to carry routing and other information.