show interfaces

Last Updated : Jun 14, 2018 |

Displays interface configuration and statistics for a particular interface or all interfaces.

Note:

Use the show ipv6 interface CLI command to display IPv6 information for the interface.

The Frame Relay sub-interface includes only the following counters:

  • packets & bytes in

  • packets & bytes out

  • input errors

  • output drops

Note:

The traffic statistics include IPv6 traffic.

Syntax

show interfaces [interface_type interface_identifier]

Parameters

Parameter

Description

Possible Values

Default Value

interface_type

The type of interface

Dialer, FastEthernet, Serial, Vlan, Loopback, Tunnel, USB

interface_ identifier

The interface number. The format varies depending on the value of interface_type:

For FastEthernet: module/port

For Serial: module/port:channel-group

For Vlan: Vlan id

For LoopBack: Loopback number

For Tunnel: Tunnel number

For FastEthernet: or 10/4

For Serial(USP): 2/13/1, 4/1, 8/1

For Serial (DS1): module/port: 2/13/1, 4/1, 8/1 channel-group: E1: 0-30 T1: 0-23

For VLAN: 1-4090

For Loopback: 1-99

For Tunnel: 1-50

For Dialer: 1

User level

read-write

Context

general

Example

To show information about all the interfaces: 
Gxxx-001(super)# show interfaces
Vlan 1 is up, line protocol is up
Physical address is 00.04.0d.29.c5.11.
Internet address is 172.16.1.139, mask is 255.255.255.240
Primary management interface
MTU 1500 bytes. Bandwidth 100000 kbit.
Reliability 255/255 txLoad 1/255 rxLoad 1/255
Encapsulation ARPA, ICC-VLAN
Link status trap disabled
Full-duplex, 100Mb/s
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:30, Last output 00:00:30
Last clearing of 'show interface' counters never.
5 minute input rate 144 bits/sec, 0 packets/sec 
5 minute output rate 0 bits/sec, 0 packets/sec 
0 input drops, 0 output drops, 0 unknown protocols 
3425 packets input, 323518 bytes 
3425 broadcasts received, 
0 giants 0 input errors, 0 CRC 
32 packets output, 896 bytes 
0 output errors, 0 collisions 
FastEthernet  is up, line protocol is down 
Physical address is 00.04.0d.29.c5.10. 
MTU 1500 bytes. Bandwidth 10000 kbit. 
Reliability 1/255 txLoad 255/255 rxLoad 255/255 
Encapsulation ARPA 
Link status trap disabled 
Half-duplex, 10Mb/s, 10BaseTX 
ARP type: ARPA, ARP Timeout 04:00:00 
Dynamic CAC BBL: 1500 kbps 
Dynamic CAC activation priority: 50 
Dynamic CAC interface status: active 
Last input never, Last output never 
Last clearing of 'show interface' counters never. 
5 minute input rate 0 bits/sec, 0 packets/sec 
5 minute output rate 0 bits/sec, 0 packets/sec 
0 input drops, 0 output drops, 0 unknown protocols 
0 packets input, 0 bytes 
0 broadcasts received, 0 giants 
0 input errors, 0 CRC 
0 packets output, 0 bytes 
0 output errors, 0 collisions 
Tunnel 1 is up, line protocol is up 
Internet address is 177.0.0.17, mask is 255.0.0.0 
MTU 468 bytes. Bandwidth 9 kbit 
Reliability 255/255 txLoad 1/255 rxLoad 1/255 
Encapsulation GRE 
Link status trap enabled 
Keepalive set (10 sec), retries 3 
Tunnel source 17.0.0.17, destination 12.0.0.3 
Tunnel protocol/transport GRE/IP, key 777 
Checksumming of packets enabled 
Tunnel DSCP 63, Tunnel TTL 255 
Path MTU Discovery, ager 10 mins, MTU 976, expires 00:09:33 
Last input never, Last output never 
Last clearing of 'show interface' counters never. 
5 minute input rate 0 bits/sec, 0 packets/sec 
5 minute output rate 0 bits/sec, 0 packets/sec 
0 input drops, 0 output drops, 0 unknown protocols 
0 packets input, 0 bytes 
0 broadcasts received, 0 giants 
0 input errors, 0 CRC 
0 packets output, 0 bytes 
0 output errors, 0 collisions 
Terminal baud rate is 9600