LAB — Troubleshoot OSPF Authentication

  • No steps this time.
    Read the ticket, find what's broken, fix it. The flag appears once everything works.

    OSPF authentication lab in area 0: PC1, R1, R2, R3, SRV1, with MD5 on R1-R2 and HMAC-SHA-512 on R2-R3

    Ticket: since last night's change window, PC1 can't reach SRV1.
    The design: MD5 area-wide on R1–R2, HMAC-SHA-512 on R2–R3.

    Rule: keep that design. Removing or downgrading authentication won't validate the lab.

    Answer the question below

    Enter the flag you obtained.