Monitoring Interfaces
From User Exec mode, use the following show commands to monitor and display the T3 interface, T1 interface, and HDLC serial data channel information:
host1#show controllers t3 0/1
host1#show controllers t3 0/1:1
host1#show controllers t3 ft1
host1#show controllers t3 serial 0/1
Setting a Baseline
You can set a statistics baseline for serial interfaces, subinterfaces, and/or circuits using the baseline interface serial command. Use the delta keyword with the show commands to display statistics with the baseline subtracted.
Displaying Counters and Time Intervals
Counters and time intervals are MIB statistics, which are defined in the following specifications:
- RFC 2495—Definitions of Managed Objects for the DS1, E1, DS2 and E2 Interface Types (January 1999)
- RFC 2496—Definitions of Managed Objects for the DS3/E3 Interface Types (January 1999)
The show controllers t3 slot/port all command displays the following information:
- T3 current interval counters—Counters for the current interval
- T3 last interval counters—Counters for the previous interval
- T3 24-hour total counters—Cumulative counters for the last 24 hours or since the interface was started
- The last 24 hours of 15-minute reporting intervals (96 intervals)
The show controllers t3 slot/port:channel all command displays the following information:
- T1 current interval counters—Counters for the current interval
- T1 last interval counters—Counters for the previous interval
- T1 24-hour total counters—Cumulative counters for the last 24 hours or since the interface was started
- The last 24 hours of 15-minute reporting intervals (96 intervals)
Output Filtering
You can use the output filtering feature of the show command to include or exclude lines of output based on a text string you specify. See JUNOSe System Basics Configuration Guide, Chapter 2, Command-Line Interface, for details.
baseline interface serial
- Use to set a statistics baseline for serial interfaces.
- The router implements the baseline by reading and storing the statistics at the time the baseline is set and subtracting this baseline whenever baseline-relative statistics are retrieved.
- Use the optional delta keyword with the show interfaces serial commands to view the baseline statistics.
- Example
host1#baseline interface serial 2/0:1/1
show controllers t1
- Use to display data and MIB statistics for a T3 interface or a T1 channel.
- Use the brief keyword to display the administrative and operational status of all configured T3 interfaces, or to display abbreviated information for the specified T3 interface.
- For definitions of the MIB statistics for a T3 interface, see RFC 2496—Definitions of Managed Objects for the DS3/E3 Interface Types (January 1999).
- For definitions of the MIB statistics for a T1 channel, see RFC 2495—Definitions of Managed Objects for the DS1, E1, DS2 and E2 Interface Types (January 1999).
- Field descriptions for T3 interface (T1 channel not specified)
- Description—Text description or alias if configured for the interface
- ifAdminStatus—One of the following administrative states of the interface:
- ifAdminUp—Interface is administratively enabled
- ifAdminDown—Interface is administratively disabled
- ifAdminTesting—Interface is administratively configured in a testing state
- snmp trap link-status—Status of SNMP trapping (enabled or disabled)
- alarms detected—One of the following T3 alarms:
- No alarm present—No alarms present on the line
- Rcv RAI Failure—Remote device is sending a far end alarm failure
- Xmt RAI Failure—Local device is sending a far end alarm failure
- Rcv AIS—Remote device is sending an alarm indication signal (AIS)
- Xmt AIS—Local device is sending an AIS
- Rcv LOF—Loss of one or more frames from the remote end
- Rcv LOS—Loss of signal at the local end
- Undefined line status—Indicates that the line is in an undefined state
NOTE: The alarms detected field does not appear for interfaces that you disabled in the software.
- framing—Type of framing format
- line code—Type of line code format
- clock source—Type of clock source
- cable length—Cable length, in feet
- Loopback—State of loopback for the controller: enabled or disabled. If loopback is enabled, one of the following states is displayed:
- Diagnostic—Loops the data back toward the router and sends an AIS toward the network
- Payload—Loops the data toward the network after the framer has processed the data
- Line—Loops the data toward the network before the data reaches the framer
- MDL Transmit Path—Status of path transmission: active or not active
- MDL Transmit Test-Signal—Status of test signal: active or not active
- MDL Transmit Idle-Signal—Status of idle signal: active or not active
- Equipment Identification Code—eic string for MDL
- Line Identification Code—lic string for MDL
- Frame Identification Code—fic string for MDL
- Unit Identification Code—unit string for MDL
- Facility Identification Code—pfi string for MDL
- Port Code—port string for MDL
- Generator Number—generator string for MDL
- BERT test—Number of current test and total number of tests
- Test interval—Length of the BERT test
- status—Sync (controller is synchronized with remote device) or NoSync (controller is not synchronized with remote device)
- Sync count—Number of times the pattern detector synchronized with the incoming data pattern
- Received bit count—Number of bits received
- Error bit count—Number of bits with errors
- Number of valid intervals—Number of 15-minute intervals since the line module was last powered on or reset
- Time elapse in current interval—Reported in 15-second intervals
- P-bit errored seconds—Number of errored seconds encountered by a T3 in the current interval
- P-bit severely errored seconds—Number of severely errored seconds encountered by a T3 in the current interval
- Severely errored frame seconds—Number of severely errored framing seconds encountered by a T3 in the current interval
- Unavailable seconds—Number of unavailable seconds encountered by a T3 in the current interval
- Line code violations—Number of line code violations encountered by a T3 in the current interval
- P-bit coding violations—Number of coding violations encountered by a T3 in the current interval
- Line errored seconds—Number of line errored seconds encountered by a T3 in the current interval
- C-bit coding violations—Number of C-bit coding violations encountered by a T3 in the current interval
- C-bit errored seconds—Number of C-bit errored seconds encountered by a T3 in the current interval
- C-bit severely errored seconds—Number of C-bit severely errored seconds encountered by a T3 in the current interval
host1#show controllers t3 2/0
DS3 2/0
Description: toronto ct3 interface
ifAdminStatus = ifAdminDown
snmp trap link-status = enabled
No alarms detected
Framing is C-BIT, Line Code is B3ZS, Clock Source is Line
Cable Length is 0 ft
Loopback Disabled
MDL Transmit Path is not active
MDL Transmit Test-Signal is active
MDL Transmit Idle-Signal is not active
Equipment Identification Code is ERX-1400
Line Identification Code is Bldg 10
Frame Identification Code is null string
Unit Identification Code is 080001
Facility Identification Code is Site 25
Port Code is Port 0800
Generator Number is null string
Number of valid interval - 96
Time elapse in current interval - 861
Ds3 Current Interval Counters
P-bit errored seconds = 0
P-bit severely errored seconds = 0
Severely errored frame seconds = 0
Unavailable seconds = 0
Line code violations = 0
P-bit coding violations = 0
Line errored seconds = 0
C-bit coding violations = 0
C-bit errored seconds = 0
C-bit severely errored seconds = 0
Ds3 Last Interval Counters
P-bit errored seconds = 0
P-bit severely errored seconds = 0
Severely errored frame seconds = 0
Unavailable seconds = 0
Line code violations = 0
P-bit coding violations = 0
Line errored seconds = 0
C-bit coding violations = 0
C-bit errored seconds = 0
C-bit severely errored seconds = 0
Ds3 24 Hour Total Counters
P-bit errored seconds = 0
P-bit severely errored seconds = 0
Severely errored frame seconds = 0
Unavailable seconds = 0
Line code violations = 0
P-bit coding violations = 0
Line errored seconds = 0
C-bit coding violations = 0
C-bit errored seconds = 0
C-bit severely errored seconds = 0
host1#show controllers t3 brief
Interfaces ifAdminStatus OperationalStatus
5/0(channelized) up up
5/1(channelized) up up
5/2(channelized) up down
5/3(channelized) down down
5/4(channelized) down down
5/5(channelized) down down
5/6(channelized) down down
5/7(channelized) down down
5/8(channelized) down down
5/9(channelized) down down
5/10(channelized) down down
5/11(channelized) down down
3/0(channelized) down down
3/1(channelized) down down
3/2(channelized) down down
4/0:1/1(unchannelized) up down
4/2:1/1(channelized) up lowerLayerDown
- Description—Text description or alias if configured for the interface
- ifOperStatus—Physical state of the interface:
- ifOperDown—Interface is not functioning
- ifOperLowerLayerDown—Lower layer in the interface stack is not functioning
- ifOperNotPresent—Module has been removed from the chassis
- ifOperTesting—Interface is being tested
- ifOperUp—Interface is functioning
- Yellow Alarm detection—Status of yellow alarm detection: active or not active
- Yellow Alarm generation—Status of yellow alarm generation: active or not active
- snmp trap link-status—Status of SNMP trapping (enabled or disabled)
- Framing—Type of framing format
- Clock source—Type of clock source
- Loopback state—Type of loopback (if enabled) and status: enabled or disabled
- Last remote loopback request sent—None or deactivate
- FDL—Status of FDL: standard configured or not configured
- FDL Transmit Path—Status of path transmission: active or not active
- FDL Transmit Idle-Signal—Status of idle signal: active or not active
- FDL Transmit Test-Signal—Status of test signal: active or not active
- Equipment Identification Code—eic string for FDL
- Line Identification Code—lic string for FDL
- Frame Identification Code—fic string for FDL
- Unit Identification Code—unit string for FDL
- Facility Identification Code—pfi string for FDL
- Port Code—port string for FDL
- Generator Number—generator string for FDL
- BERT test—Number of current test and total number of tests
- Test interval—Length of the BERT test
- status—Sync (controller is synchronized with remote device) or NoSync (controller is not synchronized with remote device)
- Sync count—Number of times the pattern detector synchronized with the incoming data pattern
- Received bit count—Number of bits received
- Error bit count—Number of bits with errors
- Number of valid intervals—Number of 15-minute intervals since the line module was last powered on or reset
- Time elapse in current interval—Statistics are reported in 15-minute intervals
- Errored seconds—Number of errored seconds encountered by a T1 in the current interval
- Severely errored seconds—Number of severely errored seconds encountered by a T1 in the current interval
- Severely errored frame seconds—Number of severely errored framing seconds encountered by a T1 in the current interval
- Unavailable seconds—Number of unavailable seconds encountered by a T1 in the current interval
- Clock slip seconds—Number of clock slips encountered by a T1 in the current interval
- Path code violations—Number of coding violations encountered by a T1 in the current interval
- Line errored seconds—Number of line errored seconds encountered by a T1 in the current interval
- Bursty errored seconds—Number of bursty errored seconds encountered by a T1 in the current interval
- Degraded minutes—Number of minutes that a T1 line is degraded
- Line code violations—Number of line code violations encountered by a T1 in the current interval
host1#show controllers t1 2/0:1 brief
DS3 2/0:1
ifOperStatus = ifOperUp
Yellow Alarm detection is active
Yellow Alarm generation is active
snmp trap link-status = disabled
Framing is D4, Line Code is Ami, Clock Source is Internal - Module Allocated Ds0 time slot map = 0x0
Loopback Enabled - Diagnostic
Last Remote Loopback Request Sent - Deactivate
FDL is not configured
FDL Transmit Path-Id is not active
FDL Transmit Test-Signal is not active
FDL Transmit Idle-Signal is not active
Equipment Identification Code is the null string
Line Identification Code is the null string
Frame Identification Code is the null string
Unit Identification Code is the null string
Facility Identification Code is the null string
Port Code is the null string
Generator Number is the null string
BERT test - 2 in 23
Test Interval 1 minute(s), Complete
Sync count = 1
Received bit count = 92148912
Error bit count = 17
Number of valid interval - 90
Time elapse in current interval - 580
host1#show controllers t1 brief
Interfaces ifAdminStatus OperationalStatus
5/0:1(framed) up lowerLayerDown
5/0:2(framed) up lowerLayerDown
5/0:3(framed) up lowerLayerDown
5/0:4(framed) up lowerLayerDown
5/0:5(framed) up lowerLayerDown
5/0:6(framed) up lowerLayerDown
...
5/2:26(framed) up lowerLayerDown
5/2:27(framed) up lowerLayerDown
5/2:28(framed) up lowerLayerDown
host1#show controllers t1 1/0:1
DS1 1/0:1
Description: toronto t1 channel
ifOperStatus = ifOperUp
Yellow Alarm detection is active
Yellow Alarm generation is active
snmp trap link-status = disabled
Framing is D4, Line Code is Ami, Clock Source is Internal - Module Allocated Ds0 time slot map = 0x0
Last Remote Loopback Request Sent - Deactivate
FDL is not configured
FDL Transmit Path-Id is not active
FDL Transmit Test-Signal is not active
FDL Transmit Idle-Signal is not active
Equipment Identification Code is the null string
Line Identification Code is the null string
Frame Identification Code is the null string
Unit Identification Code is the null string
Facility Identification Code is the null string
Port Code is the null string
Generator Number is the null string
BERT test - 2 in 23
Test Interval 1 minute(s), Complete
Sync count = 1
Received bit count = 92148912
Error bit count = 17
Number of valid interval - 90
Time elapse in current interval - 580
Ds1 Current Interval Counters
Errored seconds = 0
Severely errored second = 0
Severely errored frame seconds = 0
Unavailable seconds = 0
Clock slip seconds = 0
Path code violations = 0
Line errored seconds = 0
Bursty errored seconds = 0
Degraded minutes = 0
Line code violations = 0
Ds1 Last Interval Counters
Errored seconds = 0
Severely errored second = 0
Severely errored frame seconds = 0
Unavailable seconds = 0
Clock slip seconds = 0
Path code violations = 0
Line errored seconds = 0
Bursty errored seconds = 0
Degraded minutes = 0
Line code violations = 0
Ds1 24 Hour Total Counters
Errored seconds = 25
Severely errored second = 7
Severely errored frame seconds = 25
Unavailable seconds = 0
Clock slip seconds = 6
Path code violations = 18
Line errored seconds = 0
Bursty errored seconds = 0
Degraded minutes = 0
Line code violations = 0
show controllers t3 ft1
- Description—Text description or alias if configured for the interface
- ifOperStatus—Physical status of the interface
- ifOperUp—Interface is functioning
- ifOperTesting—Interface is being tested
- ifOperNotPresent—Module has been removed from the chassis
- ifOperDown—Interface is not functioning
- snmp trap link-status of SNMP trapping (enabled or disabled)
- Ds0 time slot map—Fractional T1 subchannel
- Ds0 mode—Base data rate: either Nx56 or Nx64
- The ft1 option displays the state of the serial interface.
- The optional slot and port parameters display information about a specific slot and port.
- Example
host1#show controllers t3 ft1
Ft1 Interface at 2/0:1/1
Description: toronto ft1 interface
ifOperStatus = ifOperLowerLayerDown
snmp trap link-status = disabled
Ds0 time slot map = 0x1
Ds0 mode = Nx64
- Use to display MIB statistics for the remote end of a channelized T3 interface configured for MDL or for the remote end of a T1 channel configured for FDL.
- Specify the all option to display detailed information for all 15-minute intervals.
- For definitions of the MIB statistics for a T3 interface, see RFC 2496—Definitions of Managed Objects for the DS3/E3 Interface Types (January 1999).
- For definitions of the MIB statistics for a T1 channel, see RFC 2495—Definitions of Managed Objects for the DS1, E1, DS2 and E2 Interface Types (January 1999).
- Field descriptions for a T3 interface
- Far End Equipment Identification Code—eic string sent by remote device for MDL
- Far End Line Identification Code—lic string sent by remote device for MDL
- Far End Frame Identification Code—fic string sent by remote device for MDL
- Far End Unit Identification Code—unit string sent by remote device for MDL
- Far End Facility Identification Code—pfi string sent by remote device for MDL
- Far End Generator Number—generator string sent by remote device for MDL
- Far End Port Number—port string sent by remote device for MDL
- Number of valid intervals—Number of 15-minute intervals since the line module was last powered on or reset
- Time elapse in current interval—Number of seconds that have passed in the 15-minute (900-second) interval
- C-bit errored seconds—Number of C-bit errored seconds encountered by a T3 in the current interval
- C-bit severely errored seconds—Number of C-bit severely errored seconds encountered by a T3 in the current interval
- C-bit coding violations—Number of C-bit coding violations encountered by a T3 in the current interval
- Unavailable seconds—Number of unavailable seconds encountered by a T3 in the current interval
- Invalid seconds—Number of seconds when statistics were not collected
host1#show controllers t3 5/0 remote
Far End MDL Carrier bit is not set
Far End Equipment Identification Code is the null string
Far End Line Identification Code is the null string
Far End Frame Identification Code is the null string
Far End Unit Identification Code is the null string
Far End Facility Identification Code is the null string
Far End Generator Number is the null string
Far End Port Number is the null string
Number of valid interval - 3
Time elapse in current interval - 756
Ds3 Current Interval Counters
C-bit errored seconds = 0
C-bit severely errored seconds = 0
C-bit coding violations = 0
Unavailable seconds = 0
Invalid seconds = 0
Ds3 Last Interval Counters
C-bit errored seconds = 0
C-bit severely errored seconds = 0
C-bit coding violations = 0
Unavailable seconds = 0
Invalid seconds = 0
Ds3 24 Hour Total Counters
C-bit errored seconds = 1
C-bit severely errored seconds = 1
C-bit coding violations = 330
Unavailable seconds = 0
Invalid seconds = 0
- DS1—Identifier of T1 channel
- Number of valid intervals—Number of 15-minute intervals since the line module was last powered on or reset
- Time elapse in current interval—Number of seconds that have passed in the 15-minute (900-second) interval
- Far End FDL Carrier bit—Status of FDL configuration on remote device connected to T1 channel
- Far End Equipment Identification Code—eic string sent by remote device for FDL
- Far End Line Identification Code—lic string sent by remote device for FDL
- Far End Frame Identification Code—fic string sent by remote device for FDL
- Far End Unit Identification Code—unit string sent by remote device for FDL
- Far End Facility Identification Code—pfi string sent by remote device for FDL
- Far End Generator Number—generator string sent by remote device for FDL
- Far End Port Number—port string sent by remote device for FDL
- Errored seconds—Number of errored seconds encountered by a T1 in the current interval
- Severely errored seconds—Number of severely errored seconds encountered by a T1 in the current interval
- Severely errored frame seconds—Number of severely errored framing seconds encountered by a T1 in the current interval
- Unavailable seconds—Number of unavailable seconds encountered by a T1 in the current interval
- Clock slip seconds—Number of clock slips encountered by a T1 in the current interval
- Path code violations—Number of coding violations encountered by a T1 in the current interval
- Line errored seconds—Number of line errored seconds encountered by a T1 in the current interval
- Bursty errored seconds—Number of bursty errored seconds encountered by a T1 in the current interval
- Degraded minutes—Number of minutes that a T1 line is degraded
host1#show controllers t1 10/1:1 remote
DS1 10/1:1
Number of valid interval - 0
Time elapse in current interval - 0
Far End FDL Carrier bit is not set
Far End Equipment Identification Code is the null string
Far End Line Identification Code is the null string
Far End Frame Identification Code is the null string
Far End Unit Identification Code is the null string
Far End Facility Identification Code is the null string
Far End Port Number is the null string
Far End Generator Number is the null string
DS1 Current Interval Counters
Errored seconds = 0
Severely errored second = 0
Severely errored frame seconds = 0
Unavailable seconds = 0
Clock slip seconds = 0
Path code violations = 0
Line errored seconds = 0
Bursty errored seconds = 0
Degraded minutes = 0
DS1 24 Hour Total Counters
Errored seconds = 0
Severely errored second = 0
Severely errored frame seconds = 0
Unavailable seconds = 0
Clock slip seconds = 0
Path code violations = 0
Line errored seconds = 0
Bursty errored seconds = 0
Degraded minutes = 0
show controllers t3 serial
- Description—Text description or alias if configured for the interface
- ifOperStatus—Physical status of the interface
- ifOperUp—Interface is functioning
- ifOperTesting—Interface is being tested
- ifOperNotPresent—Module has been removed from the chassis
- ifOperDown—Interface is not functioning
- snmp trap link-status of SNMP trapping (enabled or disabled)
- Crc type checking—Size of the cyclic redundancy check (CRC)
- Hdlc mru—Current size of the maximum receive unit (MRU)
- Hdlc mtu—Current size of the maximum transmission unit (MTU)
- Hdlc interface speed—Current line speed of the interface
- Ds0 time slot map—T1 subchannel
- Invert data disabled—Status of the data inversion feature
- The optional slot and port parameters display information about a specific slot and port.
- Use the slot/port:channel/subchannel option to display information about a specific interface.
- Example
host1#show controllers t3 serial
Serial Interface at 2/0:1/1
ifOperStatus = ifOperLowerLayerDown
snmp trap link-status = disabled
Crc type checking - CRC16
Hdlc mru = 9996
Hdlc mtu = 9996
Hdlc interface speed = 64000
Ds0 time slot map = 0x1
Invert data disabled, Ds0 mode = Nx64
Serial Interface at 2/1:1/1
ifOperStatus = ifOperLowerLayerDown
snmp trap link-status = disabled
Crc type checking - CRC16
Hdlc mru = 9996
Hdlc mtu = 9996
Hdlc interface speed = 64000
Ds0 time slot map = 0x1
Invert data disabled, Ds0 mode = Nx64
Found 2 Serial Interfaces
show interfaces serial
- Fractional Interface—Location of a channelized T1 or E1 interface
- Description—Text description or alias if configured for the interface
- ifOperStatus—Administrative status of the interface
- ifOperUp—Interface is functioning
- ifOperTesting—Interface is being tested
- ifOperNotPresent—Module has been removed from the chassis
- ifOperDown—Interface is not functioning
- ifOperLowerDown—Lower layer in the interface stack is not functioning
- snmp trap link-status—Enabled or disabled
- Encapsulation—Layer 2 encapsulation display; options include: ppp, frame-relay ietf, mlppp, mlframe-relay ietf, hdlc
- Crc type checking—Size of the CRC
- Hdlc mru—Current size of the MRU
- Hdlc mtu—Current size of the MTU
- Hdlc interface speed—Current line speed of the interface
- Hdlc idle-character—Current idle character
- Invert data disabled—Status of the data inversion feature
- Ds0 time slot map—Channelized T1 or E1 channel group
- Ds0 mode—Nx56 or Nx64
- 5 minute input rate—Data rates based on the traffic received in the last five minutes
- 5 minute output rate—Data rates based on the traffic sent in the last five minutes
- Interface statistics
- Packets received—Number of packets received on the interface
- Bytes received—Number of bytes received on the interface
- Errored packets received—Number of packets with errors received on the interface
- Packets sent—Number of packets sent on the interface
- Bytes sent—Number of bytes sent on the interface
host1#show interfaces serial 0/1:2 brief
Serial Interface at 0/1:2
Description: ottawa012 hdlc channel
ifOperStatus = ifOperUp
snmp trap link-status = disabled
Encapsulation hdlc
Crc type checking - CRC16
Hdlc mru = 1600
Hdlc mtu = 1600
Hdlc interface speed = 768000
Hdlc idle-character marks
Invert data disabled
Ds0 time slot map = 0xfff
Ds0 mode = Nx64
Serial Interface at 13/0:2
Description: ottawa013 hdlc channel
ifOperStatus = ifOperUp
snmp trap link-status = disabled
Crc type checking - CRC16
Hdlc mru = 1600
Hdlc mtu = 1600
Hdlc interface speed = 768000
Invert data disabled
Ds0 time slot map = 0xfff000
Ds0 mode = Nx64
Found 2 Serial Interfaces