An administrator is configuring a new point-to-point link between two Junos routers running IS-IS. By default, how does IS-IS handle adjacency establishment on a point-to-point link compared to a broadcast link?
Trap 1: It relies strictly on CSNPs sent every 10 seconds to establish the…
CSNPs are database synchronization tools on broadcast networks, not adjacency establishment mechanisms.
Trap 2: It requires manual mapping of neighbor system IDs using static ARP…
IS-IS adjacencies are formed dynamically through IIH packet exchanges.
Trap 3: It initiates a DIS election using priority values identical to…
DIS election does not take place on point-to-point links.
- A
It uses a 3-way handshake TLV in IIH packets and bypasses the DIS election process entirely.
Point-to-point links do not require a DIS. They use the 3-way handshake mechanism to ensure reliable adjacency formation.
- B
It relies strictly on CSNPs sent every 10 seconds to establish the adjacency.
Why wrong: CSNPs are database synchronization tools on broadcast networks, not adjacency establishment mechanisms.
- C
It requires manual mapping of neighbor system IDs using static ARP bindings.
Why wrong: IS-IS adjacencies are formed dynamically through IIH packet exchanges.
- D
It initiates a DIS election using priority values identical to broadcast segments.
Why wrong: DIS election does not take place on point-to-point links.