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How DIS is elected on ISIS protocol ?
Tweet The default L1 and L2 priority is 64 in Cisco routers, with a value range of 0-127. A value of 0 means the router is ineligible to become the DIS. The router with the highest priority is chosen...
View ArticleProtocols ISIS VS. OSPF
Tweet L2 routers are similar to OSPF backbone routers, and the set of L2 routers (including L1/L2 routers) and their interconnecting links make up the IS-IS backbone, similar to area 0 in an OSPF...
View ArticleWhat is CNSP and PNSP ?
Tweet PSNP(Partial Sequence Number PDU) are used to acknowledge the receipt or to request the retransmission of the latest version of an LSP while the CSNP(Complete Sequence Number PDU) are used for...
View ArticleISIS protocol study summary
- Link state protocol - Large ISP used it - Use Dijkstra's SPF alorithm to calculate OSI route. - use Partia Route Calculation for IP routes (much effiecient than SPF) - use "Default metric" (1 ~ 63),...
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