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Juniper

JN0-360 · Question #256

Referring to the exhibit, R1 and R2 are directly connected using interface ge-1/1/0. What is the reason the IS-IS adjacency fails? user@R1> show interfaces { ge-1/1/0 { unit 0 { family inet {…

The correct answer is B. R2 and R1 have different area IDs. See the full explanation below for the reasoning.

Question

Referring to the exhibit, R1 and R2 are directly connected using interface ge-1/1/0. What is the reason the IS-IS adjacency fails? user@R1> show interfaces { ge-1/1/0 { unit 0 { family inet { address 10.100.1.1/30; } family iso; } } lo0 { unit 0 { family inet { address 10.100.10.1/32; } family iso { address 49.1001.0010.0100.00; } } } } protocols { isis { level 1 disable; interface ge-1/1/0.0 { level 2 disable; } interface lo0.0; } } user@R2> show interfaces { ge-1/1/0 { unit 0 { family inet { address 10.100.1.2/30; } family iso { mtu 1496; } } } lo0 { unit 0 { family inet { address 10.100.10.2/32; } family iso { address 49.1002.0010.0200.00; } } } } protocols { isis { interface ge-1/1/0.0 { level 2 disable; } interface lo0.0; } }

Options

  • AR2 has an MTU value of 1496 configured on ge-1/1/0.
  • BR2 and R1 have different area IDs.
  • CR1 is configured for Level 2, and R2 is configured for Level 1.
  • DR1 is configured for both Level 1 and Level 2 to be disabled.

How the community answered

(29 responses)
  • A
    3% (1)
  • B
    83% (24)
  • C
    10% (3)
  • D
    3% (1)

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