Physical interface

Name of the physical interface.

All levels

Enabled

Sate of the interface. Possible values are described in the “Enabled Field” section under Common Output Fields Description.

All levels

Interface index

Physical interface index number, which reflects its initialization sequence.

detail extensive none

SNMP ifIndex

SNMP index number for the physical interface.

detail extensive none

Type

Type of interface.

All levels

Link-level type

Encapsulation type used on the physical interface.

All levels

MTU

Maximum Transmit Unit (MTU). Size of the largest packet to be transmitted.

All levels

Speed

Network speed on the interface.

All levels

Device flags

Information about the physical device. Possible values are described in the “Device Flags” section under Common Output Fields Description.

All levels

Interface flags

Information about the interface. Possible values are described in the “Interface Flags” section under Common Output Fields Description.

All levels

Link type

Data transmission type.

All levels

Link flags

Information about the link. Possible values are described in the “Link Flags” section under Common Output Fields Description.

All levels

Last flapped

Date, time, and how long ago the interface went from down to up. The format is Last flapped: year-month-day hour:minute:second timezone (hour:minute:second ago). For example, Last flapped: 2002-04-26 10:52:40 PDT (04:33:20 ago).

detail extensive

Input Rate

Input rate in bits per second (bps) and packets per second (pps).

None specified

Output Rate

Output rate in bps and pps.

None specified

Traffic statistics

Number and rate of bytes and packets received and transmitted on the physical interface.

• Input rate, Output rate—Number of bits per second (packets per second) received and transmitted on the interface.
• Input packets, Output packets—Number of packets received and transmitted on the interface.

detail extensive

Input errors

• Errors—Input errors on the interface.
• Drops—Number of packets dropped by the output queue of the I/O Manager ASIC.
• Framing errors—Number of packets received with an invalid frame checksum (FCS).
• Runts—Frames received smaller than the runt threshold.
• Giants—Frames received larger than the giant threshold.
• Policed Discards—Frames that the incoming packet match code discarded because the frames did not recognize them or were not of interest. Usually, this field reports protocols that the Junos OS does not support.
• Resource errors—Sum of transmit drops.

extensive

Output errors

• Carrier transitions—Number of times the interface has gone from down to up. This number does not normally increment quickly, increasing only when the cable is unplugged, the far-end system is powered down and then up, or another problem occurs. If the number of carrier transitions increments quickly, possibly once every 10 seconds, the cable, the remote system, or the interface is malfunctioning.
• Errors—Sum of outgoing frame aborts and FCS errors.
• Drops—Number of packets dropped by the output queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet dropped by the ASIC RED mechanism.
• Resource errors—Sum of transmit drops.

extensive

Logical interface

Name of the logical interface.

All levels

Index

Logical interface index number, which reflects its initialization sequence.

detail extensive none

SNMP ifIndex

Logical interface SNMP interface index number.

detail extensive none

Flags

Information about the logical interface; values are described in the “Logical Interface Flags” section under Common Output Fields Description.

All levels

Encapsulation

Encapsulation on the logical interface.

All levels

Input packets

Number of packets received on the logical interface.

None specified

Output packets

Number of packets transmitted on the logical interface.

None specified

Traffic statistics

Total number of bytes and packets received and transmitted on the logical interface. These statistics are the sum of the local and transit statistics. When a burst of traffic is received, the value in the output packet rate field might briefly exceed the peak cell rate. It takes awhile (generally, less than 1 second) for this counter to stabilize.

• Input bytes, Output bytes—Number of bytes received and transmitted on the interface.
• Input packets, Output packets—Number of packets received and transmitted on the interface.

detail extensive

Protocol

Protocol family configured on the logical interface (such as iso or inet6).

detail extensive none

MTU

MTU size on the logical interface.

detail extensive none

Flags

Information about the protocol family flags. Possible values are described in the “Family Flags” section under Common Output Fields Description.

detail extensive none

Addresses, Flags

Addresses associated with the logical interface and information about the address flags. Possible values are described in the “Addresses Flags” section under Common Output Fields Description.

detail extensive none

Destination

IP address of the remote side of the connection.

detail extensive none

Local

IP address of the logical interface.

detail extensive none