The tftp command uploads the file to the TFTP server or downloads the file on the TFTP server to the local device.
tftp [ -a source-ip-address | -i interface-type interface-number ] tftp-server [ public-net | vpn-instance vpn-instance-name ] { get | put } source-filename [ destination-filename ]
tftp ipv6 [ -a source-ip-address ] tftp-server-ipv6 [ -oi interface-type interface-number ] { get | put } source-filename [ destination-filename ]
| Parameter | Description | Value |
|---|---|---|
| -a source-ip-address | Specifies the IP address of the local device. | - |
| -i interface-type interface-number | Specifies the source interface on the local device. | - |
| -oi interface-type interface-number | Specifies the outgoing interface on the local device. | - |
| tftp-server | Specifies the IPv4 address or the host name of the TFTP server. | The value is a string of 1 to 255 characters. |
| tftp-server-ipv6 | Specifies the IPv6 address or the host name of the TFTP server. | The value is a string of 1 to 46 characters. |
| public-net | Indicates that the TFTP server is connected in the public network. | - |
| vpn-instance vpn-instance-name | Specifies the name of the VPN instance. | The value is a string of 1 to 31 characters. |
| get | Downloads files. | - |
| put | Uploads files. | - |
| source-filename | Specifies the source file name. | The name is a string of 1 to 64 characters. |
| destination-filename | Specifies the destination file name. | The name is a string of 1 to 64 characters. |
Usage Scenario
When the name of the local file is not specified, the file is saved with the original name.
The tftp command is used to send files to an IPv6 host by means of TFTP. The default transmission data type is binary. This version does not support the transmission data type of ASCII. You can specify any destination file as desired. By default, source-filename and destination-filename are the same.
By specifying a source IP address, you can communicate with the server side by using this IP address; thus, the server side can perform security check over the user side.
If neither public-net nor vpn-instance is configured, the system accesses the TFTP server in the VPN instance.
If public-net is configured, the system accesses the TFTP server on the public network.
Precautions
TFTP file transmission fails on a heavily-loaded device (for example, CPU usage exceeds 80% or memory usage exceeds 90%) due to a failure in task scheduling or memory application. Therefore, it is recommended that users perform maintenance when the device is lightly loaded.
The file system has a restriction on the number of files in the root directory. Therefore, if more than 50 files exist in the root directory, creating new files in this directory may fail.
# Download the vrpcfg.txt file at the root directory of the TFTP server to the local CF card. IP address of the TFTP server is 10.10.10.1. Save the downloaded file with the name as vrpcfg.bak.
<sysname> tftp 10.10.10.1 get vrpcfg.txt hda1:/vrpcfg.bak
# Upload the vrpcfg.txt file at the root directory of the hda1 to the default directory of the TFTP server. IP address of the TFTP server is 10.10.10.12. Save the uploaded file with the name as vrpcfg.bak.
<sysname> tftp 10.10.10.1 put hda1:/vrpcfg.txt vrpcfg.bak
# Get data from the remote TFTP server by providing the link-local address and interface name.
<sysname> tftp ipv6 2001:db8::250:daff:fe91:e058 -oi GigabitEthernet 0/0/6 get filetoget filetoget
Info: Transfer file in binary mode.
Downloading the file from the remote TFTP server. Please wait...
100%
TFTP: Downloading the file successfully.
249704 byte(s) received in 10 second(s).