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.
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)- A15% (8)
- B75% (41)
- C4% (2)
- D7% (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.
`show arp` displays the Address Resolution Protocol table, mapping IP addresses to MAC addresses, not interface-specific statistics and errors.
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.
`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.
`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
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