display interface tunnel
Syntax
display interface [ tunnel ] [ brief [ description | down ] ] [ | { begin | exclude | include } regular-expression ]
display interface tunnel number [ brief [ description ] ] [ | { begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
number: Specifies the number of a tunnel interface. With this argument, the command displays information about the specified tunnel interface.
brief: Displays brief interface information. If you do not specify this keyword, the command displays detailed interface information.
down: Displays information about interfaces in the DOWN state and the causes. If you do not specify this keyword, this command displays information about interfaces in all states.
description: Displays complete interface descriptions. If you do not specify this keyword, the command displays only the first 27 characters of interface descriptions.
|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use display interface tunnel to display information about tunnel interfaces, such as the source address, destination address, and tunnel mode.
If you do not specify the tunnel keyword, this command displays information about all interfaces on the device.
If you specify the tunnel keyword without the number argument, this command displays information about all existing tunnel interfaces.
Related commands: interface tunnel, source, destination, and tunnel-protocol.
Examples
# Display detailed information about interface Tunnel 0.
<Sysname> display interface tunnel 0
Tunnel0 current state: UP
Line protocol current state: UP
Description: Tunnel0 Interface
The Maximum Transmit Unit is 1476
Internet Address is 58.0.0.1/24 Primary
Encapsulation is TUNNEL, service-loopback-group ID is 1.
Tunnel source 20.0.0.2 (Vlan-interface2000), destination 20.0.0.1
Tunnel bandwidth 64 (kbps)
Tunnel protocol/transport GRE/IP
GRE key disabled
Checksumming of GRE packets disabled
Output queue : (Urgent queuing : Size/Length/Discards) 0/100/0
Output queue : (Protocol queuing : Size/Length/Discards) 0/500/0
Output queue : (FIFO queuing : Size/Length/Discards) 0/75/0
Last clearing of counters: Never
Last 300 seconds input: 0 bytes/sec, 0 packets/sec
Last 300 seconds output: 28 bytes/sec, 0 packets/sec
1847 packets input, 136451 bytes
0 input error
5572 packets output, 428860 bytes
0 output error
Table 55: Command output
Field | Description |
|---|---|
Tunnel0 current state | Physical state of the tunnel interface:
|
Line protocol current state | Link layer state of the tunnel interface:
|
Description | Description of the tunnel interface. |
Maximum Transmit Unit | Maximum transmit unit allowed on the tunnel interface. |
Internet Address | IP address of the tunnel interface. If no IP address is assigned to the interface, Internet protocol processing : disabled is displayed, which means that packets cannot be processed. Primary indicates the primary IP address of the interface. Sub indicates a secondary IP address of the interface. |
Encapsulation is TUNNEL | The encapsulation protocol is tunnel. |
service-loopback-group ID | ID of the service loopback group referenced by the tunnel. If service loopback group is not specified, service-loopback-group ID not set is displayed. |
Tunnel source | Source address of the tunnel. |
destination | Destination address of the tunnel. |
Tunnel bandwidth | Bandwidth of the tunnel interface. |
Tunnel protocol/transport | Tunnel mode and transport protocol:
|
GRE key disabled | The tunnel interface key option of GRE is not configured. |
Checksumming of GRE packets disabled | The GRE packet checksum function is disabled. |
Last clearing of counters | Last time of clearing of counters. |
Last 300 seconds input: 0 bytes/sec, 0 packets/sec | Average input rate in the last 300 seconds in bytes/sec or packets/sec. |
Last 300 seconds output: 0 bytes/sec, 0 packets/sec | Average output rate in the last 300 seconds in bytes/sec or packets/sec. |
packets input | Total number of input packets. |
input error | Number of input error packets. |
packets output | Total number of output packets. |
output error | Number of output error packets. |
# Display brief information about interface Tunnel 0.
<Sysname> display interface tunnel 0 brief The brief information of interface(s) under route mode: Link: ADM - administratively down; Stby - standby Protocol: (s) - spoofing Interface Link Protocol Main IP Description Tun0 UP UP 1.1.1.1
# Display brief information about interface Tunnel 1 in DOWN state.
<Sysname> display interface tunnel brief down The brief information of interface(s) under route mode: Link: ADM - administratively down; Stby - standby Interface Link Cause Tun1 DOWN Not connected
Table 56: Command output
Field | Description |
|---|---|
The brief information of interface(s) under route mode | Brief information about Layer 3 interfaces. |
Link: ADM - administratively down; Stby - standby | Link status. If the interface has been administratively shut down, ADM is displayed. To recover its physical state, perform the undo shutdown command. |
Protocol: (s) - spoofing | (s) indicates that the network layer protocol state is UP, but the link is not available because it is an on-demand link or not present at all. |
Interface | Abbreviated interface name. |
Link | Physical link state of the interface:
|
Protocol | Protocol state:
|
Main IP | Primary IP address of the interface. |
Description | Description of the interface. |
Cause | Cause of a DOWN physical link. If the port has been shut down with the shutdown command, this field displays Administratively. To bring up the port, use the undo shutdown command. |