ISIS INTERVIEW QUESTIONS
- What is attach-bit in ISIS?
- Explain the format of an NSAP address.
- What are CNSP packets? CSNP packets are similar to which packet type in OSPF?
- What are PSNP packets? For what two purposes PSNP packets are forwarded?
- Can L1 router form an adjacency with an L2 router?
- How many adjacencies are formed if two L1/L2 routers are connected to each other?
- What is use of over-load bit in ISIS?
- What is default metric of an ISIS link?
- Can an ISIS peer be member of two areas at a time?
- What is a function of an L2 router in ISIS? Can we use an L1/L2 router for same purpose?
- Integrated IS-IS can be used to send information about which routed protocols?
- Do we have a backup DIS in ISIS?
- Integrated IS-IS packets run directly on top of which layer?
- What is default LSP refresh timer in ISIS database.
- What is meant my PRC in ISIS?
- Can you configure two NSAP address on an ISIS router? When do we configure the same?
- What are possible reasons if ISIS neighborship is not coming up b/w two routers?
