以下是一个使用C语言实现TFTP命令的示例代码,代码中包含了详细的注释说明: #include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#define TFTP_SERVER_PORT 69#define MAX_BUFFER_SIZE 516// TFTP操作码#define TFTP_OPCODE_R...
&filebuf) == 0 ) { return 0; } else { return -1; } } /* Fill in the struct using data from buffer */ void packet_to_request(TFTP_Request *r, char *buf) { char filename[MAX_FILENAME]; char mode[MAX_FILENAME]; short signed int code; code = *(short signed int*)buf; buf...
TFTP(Trivial File Transfer Protocol,简单文件传输协议)是TCP/IP协议族中的一个,是用来在客户机与服务器之间进行简单文件传输的协议,提供不复杂、开销不大的文件传输服务。 为了防止路由器等设备的系统映像或配置文件损坏或被意外删除,网络TFTP服务器保留IOS软件映像或者配置文件的备份副本。 实验演示: 一、Cisco 远程...
get: Downloads a file in normal mode. put: Uploads a file. sget: Downloads a file in secure mode. The allowed maximum file size is 64 MB. source-filename: Source file name. destination-filename: Destination file name. If this argument is not specified, the file uses the source file...
{tftp|utftp} {-g|-o|-p|-r|-w}LocalName HostPort RemoteName[netascii|image] [blksize#] [timeout#] [tsize] Interactive Form Syntax Command Line Form Syntax Description The/usr/bin/tftpandutftpcommands transfer files between hosts using the Trivial File Transfer Protocol (TFTP). Since TFT...
"[loadAddress] [bootfilename] <upload_size>\n" ); 然后修改netboot_common成如下代码 static int netboot_common (proto_t proto, cmd_tbl_t *cmdtp, int argc, char *argv[]) { extern ulong upload_addr; extern ulong upload_size;
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Please wait...\ TFTP: Downloading the file successfully. 93832832 bytes received in 600 second. After the transfer is complete, run the dir command in the user view of the switch. You can find the file in the storage device. <HUAWEI> dir Directory of cfcard:/ Idx Attr Size(Byte) ...
memset(buf, 0x00, sizeof(buf));sprintf((char*)buf, "%d", 512);tm_strcpy(pstr, buf);pstr...
(lib,"ws2_32.lib")#defineBUF_SIZE 516#defineDATA_SIZE 512#defineOPCODE_RRQ 1#defineOPCODE_WRQ 2#defineOPCODE_DATA 3#defineOPCODE_ACK 4#defineOPCODE_ERROR 5#defineMAX_RETRIES 10#defineTIMEOUT 5usingnamespacestd;staticconstchar*tftp_error_msg[] = {"Undefined error","File not found","...