show interfaces (Flow Monitoring)

Physical interface

Name of the physical interface.

All levels

Link

Status of the link: up or down.

All levels

Enabled

State of the interface. Possible values are described in Enabled Field.

All levels

Interface index

Physical interface index number, which reflects its initialization sequence.

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SNMP ifIndex

SNMP index number for the physical interface.

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Generation

Unique number for use by Juniper Networks technical support only.

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Description

Description and name of the interface.

All levels

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

Clocking

Reference clock source of the interface.

All levels

Speed

Network speed on the interface.

All levels

Device flags

Information about the physical device. Possible values are described in Device Flags.

All levels

Interface flags

Information about the interface. Possible values are described in Interface Flags.

All levels

Link type

Data transmission type.

All levels

Link flags

Information about the link. Possible values are described in Link Flags.

All levels

Physical info

Information about the physical interface.

All levels

Hold-times

Current interface hold-time up and hold-time down. Value is in milliseconds.

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Current address

Configured MAC address.

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Hardware address

Media access control (MAC) address of the interface.

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Alternate link address

Backup link address.

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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)

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Statistics last cleared

Time when the statistics for the interface were last set to zero.

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Traffic statistics

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

• 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.

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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 JUNOS does not support.
• Resource errors—Sum of transmit drops.

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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.

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Logical interface

Name of the logical interface.

All levels

Index

Logical interface index number, which reflects its initialization sequence.

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SNMP ifIndex

Logical interface SNMP interface index number.

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Generation

Unique number for use by Juniper Networks technical support only.

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Flags

Information about the logical interface; values are described in Logical Interface Flags.

All levels

Encapsulation

Encapsulation on the logical interface.

All levels

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.

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Local statistics

Statistics for traffic received from and transmitted to the Routing Engine. 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.

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Transit statistics

Statistics for traffic transiting the router. 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.

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Protocol

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

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MTU

MTU size on the logical interface.

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Generation

Unique number for use by Juniper Networks technical support only.

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Route table

Route table in which this address exists; for example, Route table:0 refers to inet.0.

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Flags

Information about the protocol family flags. Possible values are described in Family Flags.

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