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show interfaces (Channelized DS3-to-DS0)

 

Syntax

Release Information

Command introduced before Junos OS Release 7.4.

Description

(M Series and T Series routers only) Display status information about the specified channelized DS3-to-DS0 interface.

Options

ds-fpc/pic/port:t1channel:ds0channelDisplay standard information about the specified channelized DS3-to-DS0 interface.
brief | detail | extensive(Optional) Display the specified level of output interface.
descriptions(Optional) Display interface description strings.
media(Optional) Display media-specific information about network interfaces.
snmp-index snmp-index(Optional) Display information for the specified SNMP index of the interface.
statistics(Optional) Display static interface statistics.

Required Privilege Level

view

List of Sample Output

show interfaces extensive (Channelized DS3-to-DS0)

Output Fields

Table 1 lists the output fields for the show interfaces (all Channelized DS3 interfaces) command. Output fields are listed in the approximate order in which they appear.

Table 1: Channelized DS3 show interfaces Output Fields

Field Name

Field Description

Level of Output

Physical Interface 

Physical interface

Name of the physical interface.

All levels

Enabled

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

All levels

Interface index

Physical interface's index number, which reflects its initialization sequence.

detail extensive none

SNMP ifIndex

SNMP index number for the physical interface.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Link-level type

Encapsulation being used on the physical interface.

All levels

MTU

MTU size on the physical interface.

All levels

Clocking

Reference clock source. It can be Internal or External.

All levels

Speed

Speed at which the interface is running.

All levels

Loopback

Whether loopback is enabled and the type of loopback (local or remote).

All levels

FCS

Frame check sequence on the interface (either 16 or 32). The default is 16 bits.

All levels

Mode

Whether C-bit parity mode or M13 mode is enabled.

All levels

Framing

Physical layer framing format used on the link. It can be ESF or SF. The default is ESF.

All levels

Parent

(Channelized IQ interfaces only) Name and interface index of the interface to which a particular child interface belongs. None indicates that this interface is the top level.

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 flags

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

All levels

Hold-times

Current interface hold-time up and hold-time down, in milliseconds.

detail extensive

Keepalive settings

(PPP and HDLC) Configured settings for keepalives.

  • interval seconds—The time in seconds between successive keepalive requests. The range is 10 seconds through 32,767 seconds, with a default of 10 seconds.

  • down-count number—The number of keepalive packets that a destination must fail to receive before the network takes a link down. The range is 1 through 255, with a default of 3.

  • up-count number—The number of keepalive packets a destination must receive to change a link’s status from down to up. The range is 1 through 255, with a default of 1.

detail extensive none

Keepalive statistics

(PPP and HDLC) Information about keepalive packets.

  • Input—Number of keepalive packets received by PPP.

    • (last seen 00:00:00 ago)—Time since the last keepalive packet was received, in the format hh:mm:ss.

  • Output—Number of keepalive packets sent by PPP and how long ago the last keepalive packets were sent and received.

    • (last seen 00:00:00 ago)—Time since the last keepalive packet was sent, in the format hh:mm:ss.

detail extensive none

LMI settings

(Frame Relay) Settings for Local Management Interface (LMI) can be either ANSI LMI settings or ITU LMI settings. ANSI LMI settings is the default. The format is (ANSI or ITU) LMI settings: value, value, value...xx seconds, where value can be:

  • n391dte—DTE full status polling interval (1–255)

  • n392dce—DCE error threshold (1–10)

  • n392dte—DTE error threshold (1–10)

  • n393dce—DCE monitored event count (1–10)

  • n393dte—DTE monitored event count (1–10)

  • t391dte—DTE polling timer (5–30 seconds)

  • t392dce—DCE polling verification timer (5–30 seconds)

detail extensive none

LMI

(Frame Relay) LMI packet statistics:

  • Input—Number of packets coming in on the interface (nn) and how much time has passed since the last packet arrived. The format is Input: nn (last seen hh:mm:ss ago).

  • Output—Number of packets sent out on the interface (nn) and how much time has passed since the last packet was sent. The format is Output: nn (last seen hh:mm:ss ago).

detail extensive none

LCP state

(PPP) Link Control Protocol state.

  • Conf-ack-received—Acknowledgement was received.

  • Conf-ack-sent—Acknowledgement was sent.

  • Conf-req-sent—Request was sent.

  • Down—LCP negotiation is incomplete (not yet completed or has failed).

  • Not-configured—LCP is not configured on the interface.

  • Opened—LCP negotiation is successful.

detail extensive none

NCP state

(PPP) Network Control Protocol state.

  • Conf-ack-received—Acknowledgement was received.

  • Conf-ack-sent—Acknowledgement was sent.

  • Conf-req-sent—Request was sent.

  • Down—NCP negotiation is incomplete (not yet completed or has failed).

  • Not-configured—NCP is not configured on the interface.

  • Opened—NCP negotiation is successful.

detail extensive none

CHAP state

(PPP) Displays the state of the Challenge Handshake Authentication Protocol (CHAP) during its transaction.

  • Chap-Chal-received—Challenge was received but response not yet sent.

  • Chap-Chal-sent—Challenge was sent.

  • Chap-Resp-received—Response was received for the challenge sent, but CHAP has not yet moved into theSuccess state. (Most likely with RADIUS authentication).

  • Chap-Resp-sent—Response was sent for the challenge received.

  • Closed—CHAP authentication is incomplete.

  • Failure—CHAP authentication failed.

  • Not-configured—CHAP is not configured on the interface.

  • Success—CHAP authentication was successful.

detail extensive none

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 hh:mm:ss ago). For example, Last flapped: 2002-04-26 10:52:40 PDT (04:33:20 ago).

detail extensive none

Statistics last cleared

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

detail extensive

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.

detail extensive

Input errors

Input errors on the interface. The following paragraphs explain the counters whose meaning might not be obvious:

  • Errors—Sum of the incoming frame aborts and FCS errors.

  • Drops—Number of packets dropped by the input queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet that is dropped by the ASIC's RED mechanism.

  • Framing errors—Number of packets received with an invalid frame checksum (FCS).

  • Giants—Number of frames received that are larger than the giant threshold.

  • Runts—Number of frames received that are smaller than the runt threshold.

  • Policed discards—Number of frames that the incoming packet match code discarded because they were not recognized or not of interest. Usually, this field reports protocols that the Junos OS does not handle.

  • L3 incompletes—Number of incoming packets discarded because they failed Layer 3 (usually IPv4) sanity checks of the header. For example, a frame with less than 20 bytes of available IP header is discarded.

  • L2 channel errors—Counter increments when the software could not find a valid logical interface for an incoming frame.

  • L2 mismatch timeouts—Count of malformed or short packets that caused the incoming packet handler to discard the frame as unreadable.

  • SRAM errors—Number of hardware errors that occurred in the static RAM (SRAM) on the PIC. If the value in this field increments, the PIC is malfunctioning.

  • HS link CRC errors—Count of errors on the high-speed links between the ASICs responsible for handling the router interfaces.

extensive

Output errors

Output errors on the interface. The following paragraphs explain the counters whose meaning might not be obvious:

  • 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 up, or another problem occurs. If the number of carrier transitions increments quickly, (perhaps once every 10 seconds), the cable, the far-end system, or the PIC is malfunctioning.

  • Errors—Sum of the 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 that is dropped by the ASIC's RED mechanism.

  • Aged packets—Number of packets that remained in shared packet SDRAM so long that the system automatically purged them. The value in this field should never increment. If it does, it is most likely a software bug or possibly malfunctioning hardware.

extensive

DS1 alarms

DS1 defects

Media-specific defects that can render the interface unable to pass packets. When a defect persists for a certain amount of time, it is promoted to an alarm. Based on the router configuration, an alarm can ring the red or yellow alarm bell on the router, or turn on the red or yellow alarm LED on the craft interface.

  • LOS—Loss of signal.

  • LOF—Loss of frame.

  • AIS—Alarm indication signal.

  • YLW—Yellow alarm. Indicates errors at the remote site receiver.

detail extensive none

T1 media

Counts of T1 media-specific errors.

  • Seconds—Number of seconds the defect has been active.

  • Count—Number of times that the defect has gone from inactive to active.

  • State—State of the error. State other than OK indicates a problem.

The T1 media-specific error types can be:

  • SEF—Severely errored framing

  • BEE—Bit error event

  • AIS—Alarm indication signal

  • LOF—Loss of frame

  • LOS—Loss of signal

  • YELLOW—Errors at the remote site receiver

  • BPV—Bipolar violation

  • EXZ—Excessive zeros

  • LCV—Line code violation

  • PCV—Pulse code violation

  • CS—Carrier state

  • LES—Line error seconds

  • ES—Errored seconds

  • SEFS—Severely errored framing seconds (section)

  • SES—Severely errored seconds

  • BES—Bit error seconds

  • UAS—Unavailable seconds

extensive

DS3 media

Counts of T3 media-specific errors. For detailed definitions of the T3 (DS-3) error events (BPV, EXZ, LCV, PCV, and CCV) and performance parameters (LES, PES, PSES, CES, CSES, SEFS, and UAS), see RFC 2496.

  • PLL Lock—Phase-locked loop out of lock

  • Reframing—Frame alignment recovery time

  • AIS—Alarm indication signal

  • LOF—Loss of frame

  • LOS—Loss of signal

  • IDLE—Idle code detected

  • YELLOW—Remote defect indication

  • BPV—Bipolar violation

  • EXZ—Excessive zeros

  • LCV—Line code violation

  • PCV—Pulse code violation

  • CCV—C-bit coding violation

  • LES—Line error seconds

  • PES—P-bit errored seconds

  • PSES—P-bit errored seconds (section)

  • CES—C-bit errored seconds

  • CSES—C-bit severely errored seconds

  • SEFS—Severely errored framing seconds

  • UAS—Unavailable seconds

extensive

HDLC configuration

Information about the HDLC configuration.

  • Giant threshold—Giant threshold programmed into the hardware.

  • Runt threshold—Runt threshold programmed into the hardware.

  • Timeslots—Configured time slots for the interface.

  • Byte encoding—Byte encoding used: Nx64K or Nx56K.

  • Data inversion—HDLC data inversion setting: Enabled or Disabled

extensive

Interface transmit queues

Name of the transmit queues and their associated statistics for each DS1 channel on the Channelized DS3-to-DS1 PIC.

  • B/W—Queue bandwidth as a percentage of the total interface bandwidth.

  • WRR—Weighted round-robin (in percent).

  • Packets—Number of packets transmitted.

  • Bytes—Number of bytes transmitted.

  • Drops—Number of packets dropped.

  • Errors—Number of packet errors.

extensive

DS1 or DS3 BERT configuration

BERT (bit error rate test) checks the quality of the line. This output appears only when a BERT is run on the interface.

  • BERT time period—Configured total time period that the BERT is to run.

  • Elapsed—Actual time elapsed since the start of the BERT (in seconds).

  • Induced error rate—Configured rate at which the bit errors are induced in the BERT pattern.

  • Algorithm—Type of algorithm selected for the BERT.

detail extensive none

Packet Forwarding Engine configuration

Information about the configuration of the Packet Forwarding Engine:

  • Destination slot—FPC slot number.

  • PLP byte—Packet Level Protocol byte.

extensive

CoS information

Information about the CoS queue for the physical interface.

  • CoS transmit queue—Queue number and its associated user-configured forwarding class name.

  • Bandwidth %—Percentage of bandwidth allocated to the queue.

  • Bandwidth bps—Bandwidth allocated to the queue (in bps).

  • Buffer %—Percentage of buffer space allocated to the queue.

  • Buffer usec—Amount of buffer space allocated to the queue, in microseconds. This value is nonzero only if the buffer size is configured in terms of time.

  • Priority—Queue priority: low or high.

  • Limit—Displayed if rate limiting is configured for the queue. Possible values are none and exact. If exact is configured, the queue transmits only up to the configured bandwidth, even if excess bandwidth is available. If none is configured, the queue transmits beyond the configured bandwidth if bandwidth is available.

extensive

Logical Interface 

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

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

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

Bandwidth

Bandwidth configured on the interface.

All levels

Protocol

Protocol family configured on the logical interface, such as iso, inet6, mpls.

detail extensive none

MTU

MTU size on the logical interface.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Route table

Routing table in which the logical interface address is located. For example, 0 refers to the routing table inet.0.

detail extensive

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

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

Broadcast

Broadcast address.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive none

Redundant Link

(LSQ redundancy) Backup link for Link Services IQ redundancy.

detail extensive none

Sample Output

show interfaces extensive (Channelized DS3-to-DS0)

user@host> show interfaces ds-0/0/0:0:0 extensive