show interfaces (Serial)
Syntax
Release Information
Command introduced before Junos OS Release 7.4.
Description
Display status information about serial interfaces, including RS-232, RS-422/449, EIA-530, X.21, and V.35.
Options
- interface-type
On M Series and T Series routers, the interface type is se-fpc/pic/port. On the J Series routers, the interface type is se-pim/0/port.
- brief | detail | extensive | terse
(Optional) Display the specified level of output.
- 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 (Serial, EIA-530)show interfaces brief (Serial, EIA-530)
show interfaces detail (Serial, EIA-530)
show interfaces extensive (Serial, EIA-530)
show interfaces (Serial, V.35)
show interfaces brief (Serial, V.35)
show interfaces detail (Serial, V.35)
show interfaces extensive (Serial, V.35)
show interfaces statistics detail (RS 449)
Output Fields
Table 1 lists the output fields for the show interfaces (Serial) command. Output fields are listed in the approximate order in which they appear.
Table 1: show interfaces (Serial) 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 |
Type | Type of interface. | All levels |
Link-level type | Encapsulation being used on the physical interface. | All levels |
MTU | Maximum transmission unit (MTU) size on the physical interface. | All levels |
Maximum speed | Maximum speed. The nonconfigurable value is 16,384 kbps. | detail extensive none |
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 keepalive packets.
| All levels |
Keepalive | (PPP and HDLC) Information about keepalive packets.
| brief none |
Keepalive statistics | (PPP and HDLC) Information about keepalive packets.
| detail extensive |
LCP state | (PPP) Link Control Protocol state.
| detail extensive none |
NCP state | (PPP) Network Control Protocol state.
| detail extensive none |
CHAP state | (PPP) Displays the state of the Challenge Handshake Authentication Protocol (CHAP) during its transaction.
| detail extensive none |
CoS queues | Number of CoS queues configured. | 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 (hour:minute:second ago). For example, Last flapped: 2002-04-26 10:52:40 PDT (04:33:20 ago). | detail extensive none |
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 |
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.
| detail extensive |
Input errors | Input errors on the interface. The following paragraphs explain the counters whose meaning might not be obvious:
| extensive |
Output errors | Output errors on the interface. The following paragraphs explain the counters whose meaning might not be obvious:
| extensive |
Egress queues supported | Total number of egress queues supported on the specified interface. Displayed with the statistics option. | detail extensive |
Egress queues in use | Total number of egress queues in use on the specified interface. Displayed with the statistics option. | detail extensive |
Queue counters | CoS queue number and its associated user-configured forwarding class name. Displayed with the statistics option.
| detail extensive |
Serial media information | Information about the physical media:
| detail extensive |
Packet Forwarding Engine configuration | Information about the configuration of the Packet Forwarding Engine:
| extensive |
CoS information | Information about the CoS queue for the physical interface:
| 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. Possible values are described in the “Logical Interface Flags” section under Common Output Fields Description. | All levels |
Encapsulation | Encapsulation on the logical interface. | All levels |
protocol-family | Protocol family configured on the logical interface. If the protocol is inet, the source and destination address are also displayed. | brief |
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 protocol family flags. Possible values are described in the “Family Flags” section under Common Output Fields Description. | detail extensive |
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 of the logical interface. | detail extensive none |
Generation | Unique number for use by Juniper Networks technical support only. | detail extensive |
Sample Output
show interfaces (Serial, EIA-530)
user@host> show interfaces se-5/0/1 Physical interface: se-5/0/1, Enabled, Physical link is Up
Interface index: 144, SNMP ifIndex: 41
Type: Serial, Link-level type: PPP, MTU: 1504, Maximum speed: 16384kbps
Device flags : Present Running
Interface flags: Point-To-Point Internal: 0x4000
Link flags : Keepalives
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive: Input: 32 (00:00:10 ago), Output: 31 (00:00:07 ago)
LCP state: Opened
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:
Not-configured
CHAP state: Closed
CoS queues : 8 supported, 8 maximum usable queues
Last flapped : 2006-04-26 15:10:18 PDT (00:05:22 ago)
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
Logical interface se-5/0/1.0 (Index 71) (SNMP ifIndex 45)
Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: PPP
Protocol inet, MTU: 1500
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 12.0.0.0/30, Local: 12.0.0.1, Broadcast: 12.0.0.3
show interfaces brief (Serial, EIA-530)
user@host> show interfaces se-5/0/1 brief Physical interface: se-5/0/1, Enabled, Physical link is Up
Type: Serial, Link-level type: PPP, MTU: 1504
Device flags : Present Running
Interface flags: Point-To-Point Internal: 0x4000
Link flags : Keepalives
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive: Input: 235 (00:00:10 ago), Output: 234 (00:00:00 ago)
Logical interface se-5/0/1.0
Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: PPP
inet 12.0.0.1/30
show interfaces detail (Serial, EIA-530)
user@host> show interfaces se-5/0/1 detail Physical interface: se-5/0/1, Enabled, Physical link is Up
Interface index: 144, SNMP ifIndex: 41, Generation: 25
Type: Serial, Link-level type: PPP, MTU: 1504, Maximum speed: 16384kbps
Device flags : Present Running
Interface flags: Point-To-Point Internal: 0x4000
Link flags : Keepalives
Hold-times : Up 0 ms, Down 0 ms
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive statistics:
Input : 37 (last seen 00:00:06 ago)
Output: 35 (last sent 00:00:01 ago)
LCP state: Opened
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:
Not-configured
CHAP state: Closed
CoS queues : 8 supported, 8 maximum usable queues
Last flapped : 2006-04-26 15:10:18 PDT (00:06:02 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 928 40 bps
Output bytes : 1023 48 bps
Input packets: 76 0 pps
Output packets: 77 0 pps
Serial media information:
Line protocol: eia530
Resync history:
Sync loss count: 0
Data signal:
Rx Clock: OK
Control signals:
Local mode: DTE
To DCE: DTR: up, RTS: up
From DCE: CTS: up, DCD: up, DSR: up
Clocking mode: loop-timed
Clock rate: 8.0 MHz
Loopback: none
Tx clock: non-invert
Line encoding: nrz
Logical interface se-5/0/1.0 (Index 71) (SNMP ifIndex 45) (Generation 9)
Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: PPP
Protocol inet, MTU: 1500, Generation: 15, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 12.0.0.0/30, Local: 12.0.0.1, Broadcast: 12.0.0.3,
Generation: 23
show interfaces extensive (Serial, EIA-530)
user@host> show interfaces se-5/0/1 extensive Physical interface: se-5/0/1, Enabled, Physical link is Up
Interface index: 144, SNMP ifIndex: 41, Generation: 25
Type: Serial, Link-level type: PPP, MTU: 1504, Maximum speed: 16384kbps
Device flags : Present Running
Interface flags: Point-To-Point Internal: 0x4000
Link flags : Keepalives
Hold-times : Up 0 ms, Down 0 ms
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive statistics:
Input : 40 (last seen 00:00:00 ago)
Output: 37 (last sent 00:00:09 ago)
LCP state: Opened
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:
Not-configured
CHAP state: Closed
CoS queues : 8 supported, 8 maximum usable queues
Last flapped : 2006-04-26 15:10:18 PDT (00:06:28 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 988 40 bps
Output bytes : 1088 48 bps
Input packets: 81 0 pps
Output packets: 82 0 pps
Input errors:
Errors: 0, Drops: 0, Framing errors: 2, Runts: 0, Giants: 0,
Policed discards: 0, Resource errors: 0
Output errors:
Carrier transitions: 1, Errors: 0, Drops: 0, MTU errors: 0,
Resource errors: 0
Serial media information:
Line protocol: eia530
Resync history:
Sync loss count: 0
Data signal:
Rx Clock: OK
Control signals:
Local mode: DTE
To DCE: DTR: up, RTS: up
From DCE: CTS: up, DCD: up, DSR: up
Clocking mode: loop-timed
Clock rate: 8.0 MHz
Loopback: none
Tx clock: non-invert
Line encoding: nrz
Packet Forwarding Engine configuration:
Destination slot: 5, PLP byte: 1 (0x00)
CoS information:
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % usec
0 best-effort 95 15564800 95 0 low none
3 network-control 5 819200 5 0 low none
Logical interface se-5/0/1.0 (Index 71) (SNMP ifIndex 45) (Generation 9)
Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: PPP
Protocol inet, MTU: 1500, Generation: 15, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 12.0.0.0/30, Local: 12.0.0.1, Broadcast: 12.0.0.3,
Generation: 23
show interfaces (Serial, V.35)
user@host> show interfaces se-5/0/0 Physical interface: se-5/0/0, Enabled, Physical link is Down
Interface index: 150, SNMP ifIndex: 39
Type: Serial, Link-level type: PPP, MTU: 1504, Maximum speed: 16384kbps
Device flags : Present Running Down
Interface flags: Hardware-Down Point-To-Point Internal: 0x4000
Link flags : Loose-NCP
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive: Input: 0 (never), Output: 0 (never)
LCP state: Down
NCP state: inet: Not-configured, inet6: Not-configured, iso: Not-configured, mpls: Not-configured
CHAP state: Closed
CoS queues : 8 supported, 8 maximum usable queues
Last flapped : 2006-04-26 14:51:27 PDT (01:02:23 ago)
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
Logical interface se-5/0/0.0 (Index 73) (SNMP ifIndex 27)
Flags: Hardware-Down Device-Down Point-To-Point SNMP-Traps
Encapsulation: PPP
Protocol inet, MTU: 1500
Flags: Protocol-Down
Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
Destination: 13.0.0.0/30, Local: 13.0.0.2, Broadcast: 13.0.0.3
show interfaces brief (Serial, V.35)
user@host> show interfaces se-5/0/0 brief
Physical interface: se-5/0/0, Enabled, Physical link is Down
Type: Serial, Link-level type: PPP, MTU: 1504
Device flags : Present Running Down
Interface flags: Hardware-Down Point-To-Point Internal: 0x4000
Link flags : Loose-NCP
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive: Input: 0 (never), Output: 0 (never)
Logical interface se-5/0/0.0
Flags: Hardware-Down Device-Down Point-To-Point SNMP-Traps
Encapsulation: PPP
inet 13.0.0.2/30
show interfaces detail (Serial, V.35)
user@host> show interfaces se-5/0/0 detail Physical interface: se-5/0/0, Enabled, Physical link is Down
Interface index: 150, SNMP ifIndex: 39, Generation: 31
Type: Serial, Link-level type: PPP, MTU: 1504, Maximum speed: 16384kbps
Device flags : Present Running Down
Interface flags: Hardware-Down Point-To-Point Internal: 0x4000
Link flags : Loose-NCP
Hold-times : Up 0 ms, Down 0 ms
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive statistics:
Input : 0 (last seen: never)
Output: 0 (last sent: never)
LCP state: Down
NCP state: inet: Not-configured, inet6: Not-configured, iso: Not-configured, mpls: Not-configured
CHAP state: Closed
CoS queues : 8 supported, 8 maximum usable queues
Last flapped : 2006-04-26 14:51:27 PDT (01:03:15 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Serial media information:
Line protocol: v.35
Resync history:
Sync loss count: 0
Data signal:
Rx Clock: Not Detected
Control signals:
Local mode: DCE
To DTE: CTS: down, DCD: down, DSR: up
From DTE: DTR: down, RTS: down
DCE loopback override: Off
Clocking mode: internal
Clock rate: 38.4 KHz
Loopback: none
Tx clock: non-invert
Line encoding: nrz
Logical interface se-5/0/0.0 (Index 73) (SNMP ifIndex 27) (Generation 12)
Flags: Hardware-Down Device-Down Point-To-Point SNMP-Traps
Encapsulation: PPP
Protocol inet, MTU: 1500, Generation: 17, Route table: 0
Flags: Protocol-Down
Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
Destination: 13.0.0.0/30, Local: 13.0.0.2, Broadcast: 13.0.0.3,
Generation: 23
show interfaces extensive (Serial, V.35)
user@host> show interfaces se-5/0/0 extensive Physical interface: se-5/0/0, Enabled, Physical link is Down
Interface index: 150, SNMP ifIndex: 39, Generation: 31
Type: Serial, Link-level type: PPP, MTU: 1504, Maximum speed: 16384kbps
Device flags : Present Running Down
Interface flags: Hardware-Down Point-To-Point Internal: 0x4000
Link flags : Loose-NCP
Hold-times : Up 0 ms, Down 0 ms
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive statistics:
Input : 0 (last seen: never)
Output: 0 (last sent: never)
LCP state: Down
NCP state: inet: Not-configured, inet6: Not-configured, iso: Not-configured, mpls: Not-configured
CHAP state: Closed
CoS queues : 8 supported, 8 maximum usable queues
Last flapped : 2006-04-26 14:51:27 PDT (01:04:17 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0,
Policed discards: 0, Resource errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, MTU errors: 0,
Resource errors: 0
Serial media information:
Line protocol: v.35
Resync history:
Sync loss count: 0
Data signal:
Rx Clock: Not Detected
Control signals:
Local mode: DCE
To DTE: CTS: down, DCD: down, DSR: up
From DTE: DTR: down, RTS: down
DCE loopback override: Off
Clocking mode: internal
Clock rate: 38.4 KHz
Loopback: none
Tx clock: non-invert
Line encoding: nrz
Packet Forwarding Engine configuration:
Destination slot: 5, PLP byte: 1 (0x00)
CoS information:
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % usec
0 best-effort 95 15564800 95 0 low none
3 network-control 5 819200 5 0 low none
Logical interface se-5/0/0.0 (Index 73) (SNMP ifIndex 27) (Generation 12)
Flags: Hardware-Down Device-Down Point-To-Point SNMP-Traps
Encapsulation: PPP
Protocol inet, MTU: 1500, Generation: 17, Route table: 0
Flags: Protocol-Down
Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
Destination: 13.0.0.0/30, Local: 13.0.0.2, Broadcast: 13.0.0.3,
Generation: 23
show interfaces statistics detail (RS 449)
user@host> show interfaces se-6/0/0 statistics
detail Interface index: 149, SNMP ifIndex: 59, Generation: 150
Type: Serial, Link-level type: PPP, MTU: 1504, Maximum speed: 8mbps
Device flags : Present Running
Interface flags: Point-To-Point Internal: 0x4000
Link flags : No-Keepalives Loose-NCP
Hold-times : Up 0 ms, Down 0 ms
LCP state: Opened
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:
Not-configured
CHAP state: Closed
PAP state: Closed
CoS queues : 8 supported, 8 maximum usable queues
Last flapped : 2007-11-28 19:38:36 PST (00:14:06 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 744 0 bps
Output bytes : 5978 0 bps
Input packets: 33 0 pps
Output packets: 129 0 pps
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0, Policed discards: 0,
Resource errors: 0
Output errors:
Carrier transitions: 13, Errors: 0, Drops: 0, MTU errors: 0, Resource errors: 0
Egress queues: 8 supported, 5 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 24 24 0
1 expedited-fo 0 0 0
2 bulk 0 0 0
3 assured-forw 105 105 0
4 voip 0 0 0
Serial media information:
Line protocol: rs449
Resync history:
Sync loss count: 0
Data signal:
Rx Clock: OK
Control signals:
Local mode: DTE
To DCE: DTR: up, RTS: up
From DCE: CTS: up, DCD: up, DSR: up
Clocking mode: internal
Loopback: none
Tx clock: non-invert
Line encoding: nrz
Logical interface se-6/0/0.0 (Index 75) (SNMP ifIndex 69) (Generation 141)
Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: PPP
Protocol inet, MTU: 256, Generation: 145, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 11.11.11/24, Local: 11.11.11.2, Broadcast: 11.11.11.255,
Generation: 157
