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Juniper

JN0-102 · Question #395

You suspect a duplicate MAC address on a subnet. You want to display the MAC, errors, and statistics of the ge-0/0/0 interface. Which command will accomplish this task?

The correct answer is B. show interface ge-0/0/0 extensive. To display the MAC address, errors, and statistics of a specific interface, the show interface <interface-name> extensive command is used.

Operational Monitoring and Maintenance

Question

You suspect a duplicate MAC address on a subnet. You want to display the MAC, errors, and statistics of the ge-0/0/0 interface. Which command will accomplish this task?

Options

  • Ashow arp
  • Bshow interface ge-0/0/0 extensive
  • Cshow ethernet-switching table
  • Dshow interface terse

How the community answered

(55 responses)
  • A
    15% (8)
  • B
    75% (41)
  • C
    4% (2)
  • D
    7% (4)

Why each option

To display the MAC address, errors, and statistics of a specific interface, the `show interface <interface-name> extensive` command is used.

Ashow arp

`show arp` displays the Address Resolution Protocol table, mapping IP addresses to MAC addresses, not interface-specific statistics and errors.

Bshow interface ge-0/0/0 extensiveCorrect

The `show interface ge-0/0/0 extensive` command provides a comprehensive detailed output for the specified interface, including its MAC address, input and output error counters, various traffic statistics, and other operational details.

Cshow ethernet-switching table

`show ethernet-switching table` displays the MAC address forwarding table (FDB) of the switch, showing learned MAC addresses, but not interface errors or general statistics.

Dshow interface terse

`show interface terse` provides a brief summary of interface status and basic traffic counts, lacking the detailed MAC, error, and extensive statistics requested.

Concept tested: Junos interface statistics and details

Source: https://www.juniper.net/documentation/us/en/software/junos/user-access/topics/topic-map-interface-management.html

Topics

#operational commands#troubleshooting#interface monitoring#show interface extensive

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